300-410 Layer 3 Technologies — All Questions With Answers

A network administrator is troubleshooting an EIGRP network where a router is not forming an adjacency with a neighbor. The administrator verifies that the interfaces are up, IP connectivity exists, and the autonomous system numbers match. Which of the following is the most likely cause of the adjacency failure?

Question 2hardmultiple choice

A network administrator is troubleshooting a Cisco IOS router running EIGRP. The router is not forming an adjacency with a neighbor. The administrator verifies that the interfaces are up, IP addresses are correct, and no ACLs are blocking traffic. The output of 'show ip eigrp interfaces' shows the interface is enabled for EIGRP. What is the most likely reason for the adjacency failure?

Question 3hardmultiple choice

A network administrator is configuring OSPFv3 on a Cisco router. The router is connected to an IPv6 network and must form an adjacency with a neighbor. The administrator notices that the neighbor relationship is stuck in EXSTART state. Which of the following is the most likely cause?

Question 4mediummultiple choice

Refer to the exhibit. A network engineer is troubleshooting an EIGRP adjacency between two routers on a point-to-point serial link. The output of show ip eigrp neighbors shows the neighbor in EXSTART state for several minutes. The engineer verifies that the interfaces are up/up, IP connectivity exists, and authentication is configured correctly on both routers. Which action is most likely to resolve this issue?

Question 5mediummulti select

A network engineer is configuring OSPFv3 on a dual-stack router. The engineer wants to enable OSPFv3 on an interface and ensure that it participates in the OSPFv3 process. Which two commands are required to accomplish this? (Choose two.)

Question 6mediummultiple choice

A network engineer configures a Cisco router with the command `ip route 10.1.1.0 255.255.255.0 192.168.1.2`. Later, the engineer adds `ip route 10.1.1.0 255.255.255.0 192.168.2.2 10`. Which route will be installed in the routing table, and why?

Question 7mediummultiple choice

A network engineer is configuring OSPF on a router connected to a service provider. The provider requires authentication on all OSPF packets. The engineer configures the interface with the command 'ip ospf authentication message-digest' and sets the key using 'ip ospf message-digest-key 1 md5 SECRET'. However, OSPF adjacencies do not form. Which additional configuration is required on the interface?

Question 8mediummultiple choice

A network engineer is configuring OSPFv2 on a Cisco IOS-XE router. The router is connected to a broadcast multi-access segment where it must become the Designated Router (DR) because it has the highest OSPF priority. After applying the priority change under the interface, the engineer notices that the router remains in the DROTHER state. What is the most likely reason?

Question 9mediummultiple choice

A network engineer is configuring a Cisco router to redistribute routes from OSPF into EIGRP. The engineer wants to ensure that only specific OSPF routes are redistributed and that the EIGRP metric is set appropriately. Which command should be used to accomplish this?

Question 10mediummultiple choice

A network engineer has configured a static route on a Cisco IOS XE router: ip route 10.20.0.0 255.255.0.0 192.168.1.1. The router also has an OSPF route to the same network via a different next-hop. The engineer wants the static route to be used only when the OSPF route is not available, without changing the administrative distance globally. Which configuration should be applied?

Question 11hardmulti select

A network administrator is deploying OSPFv3 in a dual-stack IPv4/IPv6 environment. The administrator wants to ensure that OSPFv3 operates correctly and securely. Which two statements about OSPFv3 are true? (Choose two.)

Question 12easymultiple choice

A network technician is configuring a static route on a Cisco router. The technician wants to ensure that the route is only used if the next-hop address is reachable via a specific interface. Which command should be used?

Question 13hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency that fails to form between two routers. The administrator verifies that the autonomous system numbers match and that K-values are default. The routers are directly connected on a Gigabit Ethernet link. Which condition could prevent the EIGRP adjacency from forming?

Question 14hardmultiple choice

A network administrator is troubleshooting a DMVPN Phase 3 deployment using OSPF. Spokes are configured with 'ip nhrp redirect' on the hub and 'ip nhrp shortcut' on the spokes. The administrator notices that spoke-to-spoke traffic initially goes through the hub but then fails to switch to a direct spoke-to-spoke path. What is the most likely cause?

Question 15mediummultiple choice

A network engineer is troubleshooting an EIGRP adjacency between two routers. The routers are directly connected via a GigabitEthernet link. The engineer notices that the adjacency forms but immediately drops, and the console displays the message "%DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 10.1.1.2 (GigabitEthernet0/0) is down: retry limit exceeded". Which action should the engineer take to resolve this issue?

Question 16easymultiple choice

A network technician is configuring a Cisco router with a static route to a remote network. The technician wants the static route to be used only if the primary route learned via OSPF fails. Which command should be used?

Question 17hardmultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The engineer wants to route traffic from a specific subnet to a next-hop that is not in the routing table. Which action must be taken to ensure that PBR works correctly?

Question 18mediummulti select

A network engineer is configuring BGP on a Cisco IOS XE router. The engineer wants to ensure that the router prefers routes learned from a specific eBGP peer over routes learned from another eBGP peer. Which two BGP attributes can be manipulated to influence this decision? (Choose two.)

Question 19mediummultiple choice

A network engineer is configuring OSPFv3 on an IPv6 network. R1 and R2 are directly connected on the same segment with the same area ID and same OSPFv3 process ID. However, they are not forming an adjacency. The engineer verifies that IPv6 unicast routing is enabled, but the neighbor state remains down. What is the most likely cause?

Question 20hardmultiple choice

A network engineer is configuring OSPFv3 on a Cisco IOS router. The engineer wants to enable OSPFv3 on an interface and ensure that it participates in the OSPFv3 process. Which command is required on the interface?

Question 21mediummultiple choice

A network engineer is configuring OSPFv3 on a dual-stack router. The router has two interfaces: GigabitEthernet0/0 with IPv6 address 2001:DB8:1::1/64 and GigabitEthernet0/1 with IPv6 address 2001:DB8:2::1/64. The engineer enters the commands:

ipv6 unicast-routing ipv6 router ospf 1 router-id 1.1.1.1

interface GigabitEthernet0/0

ipv6 ospf 1 area 0

interface GigabitEthernet0/1

ipv6 ospf 1 area 0

After configuration, the router does not form any OSPFv3 neighbor adjacencies. Which action is most likely to resolve the problem?

Question 22hardmulti select

A network administrator is troubleshooting an EIGRP adjacency that is stuck in the ACTIVE state. The adjacency is between two routers on a LAN segment. Which two actions should the administrator take to resolve this issue? (Choose two.)

Question 23hardmultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using OSPF as the routing protocol. Spoke routers are not learning routes from other spokes via the hub. The hub is configured with 'ip nhrp redirect' and spokes with 'ip nhrp shortcut'. The engineer notices that spoke-to-spoke traffic is flowing through the hub, but OSPF adjacencies are only formed between each spoke and the hub. What is the primary reason for this behavior?

Question 24mediummultiple choice

A network engineer is configuring EIGRP on a Cisco IOS XE router. The engineer wants to ensure that the router does not advertise a specific prefix to any EIGRP neighbor. Which configuration should be used?

Question 25hardmulti select

A network engineer is deploying MPLS Layer 3 VPNs. The engineer needs to configure the provider edge (PE) routers to support multiple VRFs. Which two statements about VRF configuration on Cisco IOS routers are true? (Choose two.)

Question 26mediummultiple choice

A network engineer is troubleshooting an OSPFv3 network. Router R1 is configured with `ipv6 unicast-routing` and OSPFv3 is enabled on all interfaces. R1's neighbor table shows a neighbor in EXSTART state, but the adjacency never progresses to FULL. What is the most likely cause?

Question 27mediummultiple choice

A network engineer is configuring OSPFv2 on a Cisco router. The router is connected to a broadcast network via GigabitEthernet0/0 and to a point-to-point serial link via Serial0/0/0. The engineer wants to minimize OSPF neighbor formation time and ensure that DR/BDR election does not occur on either interface. Which configuration should be applied?

Question 28hardmultiple choice

A network administrator is configuring a route-map to control redistribution from OSPF into EIGRP. The goal is to redistribute only routes with a tag of 100 and set their metric to bandwidth 1000, delay 100, reliability 255, loading 1, and MTU 1500. Which route-map configuration accomplishes this?

Question 29mediummultiple choice

A network engineer is configuring OSPF on a Cisco IOS-XE router. The router has two interfaces in Area 0: GigabitEthernet0/0 (10.1.1.1/24) and GigabitEthernet0/1 (10.2.2.1/24). The engineer wants to ensure that OSPF uses the highest IP address of a loopback interface as the router ID, but no loopback is currently configured. Which command should the engineer use to explicitly set the OSPF router ID to 10.255.255.1?

Question 30hardmulti select

A network engineer is troubleshooting OSPFv3 adjacency issues on a Cisco IOS XE router. The engineer suspects that OSPFv3 is not forming an adjacency because of mismatched parameters. Which two parameters must match for an OSPFv3 adjacency to form? (Choose two.)

Question 31hardmultiple choice

A network administrator is configuring a DMVPN Phase 3 network with OSPF. The hub router is configured with `ip nhrp redirect` and the spokes with `ip nhrp shortcut`. The administrator notices that spoke-to-spoke traffic is still going through the hub. What is the most likely reason?

Question 32mediummultiple choice

A network engineer is configuring OSPF on a router that connects to a service provider via a WAN link. The engineer wants to ensure that the router does not become a transit path for external routes learned from the service provider. Which OSPF area type should be configured on the interface connecting to the service provider?

Question 33mediummultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco router. The goal is to forward traffic from subnet 10.10.10.0/24 that is destined for any address to next-hop 192.168.2.2, while all other traffic should follow the routing table. Which configuration achieves this?

Question 34mediummulti select

A network engineer is configuring Policy-Based Routing (PBR) on a Cisco IOS-XE router. The engineer wants to route traffic from subnet 10.1.1.0/24 to a next-hop of 192.168.1.1, and traffic from subnet 10.2.2.0/24 to a next-hop of 192.168.2.1. Both policies should be applied to interface GigabitEthernet0/0. Which two configurations are required to accomplish this? (Choose two.)

Question 35mediummultiple choice

A network engineer is configuring a Cisco router to redistribute routes from OSPF into EIGRP. The OSPF routes are present in the routing table, but they are not appearing in EIGRP updates. The engineer has configured 'redistribute ospf 1 metric 10000 100 255 1 1500' under router eigrp 10. What is the most likely reason?

Question 36hardmultiple choice

A network engineer is configuring OSPFv3 on a Cisco router. The router has two interfaces: GigabitEthernet0/0 in area 0 and GigabitEthernet0/1 in area 1. The engineer wants to summarize the IPv6 addresses of GigabitEthernet0/1 into area 0 using the prefix 2001:DB8:1::/48. Which command should be used?

Question 37mediummultiple choice

A network engineer is configuring BGP on a Cisco IOS router. The engineer wants to ensure that the router prefers a route learned from a specific eBGP neighbor over other eBGP routes. Which BGP attribute should be manipulated to achieve this?

Question 38mediummultiple choice

A network engineer is configuring OSPFv3 on a dual-stack router. The router must form an adjacency with a neighboring router over an interface that is also running IPv4 OSPFv2. The engineer wants to minimize configuration and ensure that OSPFv3 uses the same link-local addresses as IPv6. Which command should be used to enable OSPFv3 on the interface?

Question 39hardmulti select

A network engineer is configuring a DMVPN Phase 3 hub-and-spoke topology using mGRE and NHRP. The engineer wants to enable direct spoke-to-spoke communication. Which two configurations are required to achieve this? (Choose two.)

Question 40hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency that is not forming between two routers. The routers are directly connected via a point-to-point serial link. The administrator verifies that the interfaces are up and IP connectivity is working. Which of the following could be a reason for the EIGRP adjacency failure?

Question 41hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency that is not forming between two routers. The routers are directly connected via a GigabitEthernet link. The administrator verifies that the interfaces are up and IP addresses are correctly configured. The output of 'show ip eigrp neighbors' on one router shows no neighbors. Which of the following is the most likely cause?

Question 42hardmulti select

A network engineer is troubleshooting an MPLS Layer 3 VPN. The engineer notices that the provider edge (PE) router is not receiving VPNv4 routes from a remote PE. Which two statements are true regarding the requirements for VPNv4 route exchange? (Choose two.)

Question 43mediummulti select

Study the full QoS explanation →

A network engineer is configuring a GRE tunnel between two Cisco routers. The tunnel will carry OSPF traffic. Which two statements are true regarding the configuration and operation of this tunnel? (Choose two.)

Question 44mediummulti select

A network engineer is implementing policy-based routing (PBR) on a Cisco IOS router. The engineer wants to route traffic from a specific subnet to a next-hop IP address that is not directly connected, and also wants to mark the traffic with a specific DSCP value. Which two actions must be configured to achieve this? (Choose two.)

Question 45mediummultiple choice

A network engineer is troubleshooting a multi-area OSPFv2 network. Area 10 is a totally stubby area connected to Area 0 via an ABR. A router in Area 10 is not receiving any external routes. The engineer verifies that the ABR has the 'area 10 stub no-summary' command configured. However, the router in Area 10 still has no default route. What is the most likely cause?

Question 46mediummultiple choice

A network engineer is configuring OSPF on a router. The router has two interfaces in the same OSPF area: GigabitEthernet0/0 (10.1.1.1/24) and GigabitEthernet0/1 (10.1.1.2/24). After configuration, the engineer notices that the router does not form an adjacency with a neighbor on GigabitEthernet0/1. Which of the following is the most likely cause?

Question 47mediummultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 spoke-to-spoke communication issue. The hub router is configured with 'ip nhrp redirect' and the spokes with 'ip nhrp shortcut'. The spokes are in the same subnet and have established NBMA mappings to the hub. However, spoke-to-spoke traffic still goes through the hub. Which command should the engineer verify first on the spoke routers to ensure they can dynamically create shortcut paths?

Question 48mediummultiple choice

Read the full VRF explanation →

A network administrator is configuring OSPFv3 on a Cisco router. The router has been configured with the command 'ipv6 router ospf 1' and the interfaces have been enabled with 'ipv6 ospf 1 area 0'. However, the router is not forming any OSPFv3 adjacencies. Which of the following is the most likely cause?

Question 49mediummultiple choice

A network engineer is configuring VRF-Lite on a Cisco IOS router to separate traffic from two different customers. The engineer has created VRF CUST-A and VRF CUST-B. The engineer now needs to assign an interface to VRF CUST-A and configure an IP address. Which command sequence is correct?

Question 50hardmultiple choice

A network administrator is deploying MPLS Layer 3 VPNs and needs to ensure that customer routes are properly propagated across the service provider backbone. The administrator has configured MP-BGP with VPNv4 address family between PE routers. Which BGP attribute is used to uniquely identify customer routes and prevent routing loops between different VPNs?

Question 51hardmultiple choice

A network administrator is configuring OSPFv3 on a router and wants to enable authentication for a specific interface using IPsec AH. The administrator enters the command 'ipv6 ospf authentication ipsec ah sha1 key-string MyKey' under the interface. However, OSPFv3 adjacencies fail to form. Which action should the administrator take to resolve the issue?

Question 52easymultiple choice

A network engineer is configuring EIGRP on a router and notices that the EIGRP topology table shows a route with a reported distance of 1000 and a feasible distance of 1200. The route is not installed in the routing table. What is the most likely reason?

Question 53mediummultiple choice

A Cisco IOS router is configured with OSPFv3 for IPv6 and OSPFv2 for IPv4 on the same GigabitEthernet0/0 interface. The network engineer notices that the IPv6 OSPF neighbor remains in EXSTART state, while the IPv4 neighbor is FULL. What is the most likely cause?

Question 54hardmultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using OSPF. Spoke routers are not learning routes from other spokes despite being in the same OSPF area. The hub is configured with 'ip nhrp redirect' and spokes with 'ip nhrp shortcut'. Which OSPF network type should be configured on the tunnel interfaces to ensure proper route propagation and shortcut switching?

Question 55hardmultiple choice

A network engineer is troubleshooting an OSPFv2 area where a new Cisco IOS-XE router (R3) was added. R3 is connected to R1 via a point-to-point GigabitEthernet link. R1's interface is configured with 'ip ospf network point-to-point'. R3's interface is left at default. The engineer notices that R1 forms a FULL adjacency with R3, but R3 does not install routes learned from R1 into its routing table. Which action resolves the issue?

Question 56mediummultiple choice

A network engineer at a branch office is configuring OSPFv2 on a router that connects to two different areas: Area 0 and Area 10. The router must advertise a default route into Area 10 without flooding it into Area 0. Which OSPF command should be used on the Area Border Router (ABR)?

Question 57mediummultiple choice

A network engineer configured a static route on a Cisco IOS XE router: ip route 10.10.10.0 255.255.255.0 192.168.1.2. The router also runs EIGRP AS 100 and has learned the same prefix via EIGRP with a metric of 33280. The engineer wants the static route to be preferred over the EIGRP route but also wants EIGRP to advertise the static route to neighbors. Which configuration should be used?

Question 58hardmultiple choice

Study the full multicast explanation →

A network administrator is troubleshooting an OSPFv3 network. The router R1 is configured with the command 'ipv6 router ospf 1' and 'router-id 1.1.1.1'. The interface GigabitEthernet0/0 is enabled for OSPFv3 using 'ipv6 ospf 1 area 0'. However, R1 does not form an adjacency with its neighbor R2. The output of 'show ipv6 ospf interface GigabitEthernet0/0' shows that the interface is in the DR state and the neighbor list is empty. What is the most likely cause?

Question 59easymultiple choice

A network engineer is configuring a GRE tunnel between two Cisco routers to transport multicast traffic. The engineer wants to ensure that the tunnel interface supports multicast and that the physical interface is not a bottleneck. Which command must be configured on the tunnel interface to enable multicast support?

Question 60mediummultiple choice

A network engineer is configuring a GRE tunnel between two routers to transport IPv6 traffic over an IPv4-only core. The engineer wants to ensure that the tunnel interface supports multicast and that OSPFv3 can form an adjacency over the tunnel. Which configuration is required on the tunnel interface?

Question 61hardmultiple choice

A network engineer is implementing MPLS Layer 3 VPNs. The customer edge (CE) router is running OSPF with the provider edge (PE) router. The engineer wants to prevent OSPF routes from the customer from being redistributed into the provider's OSPF domain and vice versa. Which mechanism should be used on the PE router?

Question 62hardmultiple choice

A network administrator is troubleshooting a DMVPN Phase 3 deployment using OSPF. Spoke routers are configured with 'ip nhrp redirect' on the hub and 'ip nhrp shortcut' on the spokes. Despite correct NHRP mappings, spoke-to-spoke traffic is still traversing the hub. Which OSPF configuration on the spokes is required to enable direct spoke-to-spoke communication?

Question 63hardmulti select

A network engineer is troubleshooting a DMVPN Phase 2 network where spoke-to-spoke traffic is not taking the direct path. The hub is configured with 'ip nhrp map multicast dynamic' and 'ip nhrp network-id 1'. The spokes are configured with 'ip nhrp map multicast <hub>' and 'ip nhrp network-id 1'. Which two additional configurations are required on the spokes to enable direct spoke-to-spoke communication? (Choose two.)

Question 64hardmultiple choice

A network administrator is troubleshooting an OSPFv3 network. Router R1 is configured with the command 'ipv6 router ospf 1' and interface GigabitEthernet0/0 is enabled with 'ipv6 ospf 1 area 0'. R1's neighbor R2 is stuck in EXSTART state. Which action is most likely to resolve the issue?

Question 65easymultiple choice

A network administrator is configuring a GRE tunnel between two routers. The tunnel interface is up, but no traffic is passing through it. What is a common reason for this issue?

Question 66mediummultiple choice

A network engineer is configuring OSPF on a Cisco router. The router has three interfaces: GigabitEthernet0/0 (10.1.1.1/24), GigabitEthernet0/1 (10.1.2.1/24), and GigabitEthernet0/2 (10.1.3.1/24). The engineer wants to enable OSPF on all three interfaces but ensure that only GigabitEthernet0/0 and GigabitEthernet0/1 participate in OSPF area 0, while GigabitEthernet0/2 remains passive. Which configuration accomplishes this?

Question 67mediummultiple choice

A network engineer is configuring OSPF on a router that connects to a service provider via a WAN link. The engineer wants to prevent OSPF from forming an adjacency on the WAN interface while still advertising the connected subnet into OSPF. Which configuration achieves this?

Question 68mediummultiple choice

A network engineer is configuring a GRE tunnel between two Cisco IOS routers to transport IPv6 traffic over an IPv4-only transit network. The engineer issues the command 'tunnel mode gre ipv6' on both routers. After applying the configuration, IPv6 pings across the tunnel fail. What is the most likely cause?

Question 69mediummulti select

A network engineer is configuring BGP on a Cisco IOS router. The router must establish an eBGP peering with a neighbor at 192.0.2.1 and advertise the network 10.1.1.0/24. The engineer wants to ensure that the BGP session uses the correct source IP address and that the network is advertised only if it exists in the routing table. Which two commands are required to meet these requirements? (Choose two.)

Question 70hardmultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to forward HTTP traffic from a specific subnet to a next-hop address of 10.1.1.2, while all other traffic follows the routing table. Which configuration snippet correctly achieves this?

Question 71hardmulti select

Read the full VRF explanation →

A network architect is designing a solution to connect multiple branch sites to a central headquarters using DMVPN. The design requires dynamic routing with OSPF over the DMVPN tunnels. Which two statements are correct regarding the configuration of OSPF on the DMVPN hub and spokes? (Choose two.)

Question 72hardmulti select

A network engineer is configuring VRF-lite on a Cisco IOS router to separate traffic for two customers. The router has two interfaces connected to Customer A and one interface connected to Customer B. The engineer must ensure that Customer A's traffic is isolated from Customer B's and that each customer can run their own routing protocol. Which two configurations are required to achieve this? (Choose two.)

Question 73mediummultiple choice

A network engineer is configuring OSPFv3 on a router that connects to an IPv4-only OSPFv2 domain. The engineer wants to ensure that the OSPFv3 process uses the same router ID as the OSPFv2 process. Which command should be used?

Question 74mediummultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to route traffic from subnet 10.10.10.0/24 to a specific next-hop 192.168.2.1 for HTTP traffic (TCP port 80), while all other traffic follows the normal routing table. Which configuration sequence is required on the router's ingress interface?

Question 75hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency issue between two routers, R1 and R2. The routers are directly connected via a GigabitEthernet link. R1's configuration includes 'eigrp router-id 1.1.1.1' and 'network 10.0.0.0'. R2's configuration includes 'eigrp router-id 2.2.2.2' and 'network 10.0.0.0'. The administrator notices that the adjacency is stuck in EXSTART state. Which of the following is the most likely cause?

Question 76hardmulti select

A network administrator is troubleshooting an OSPFv3 network. Router R1 is not forming an adjacency with Router R2 over a point-to-point link. The administrator verifies that the interfaces are up and IPv6 addresses are configured correctly. Which two actions should the administrator take to resolve the issue? (Choose two.)

Question 77mediummulti select

A network engineer is configuring MPLS Layer 3 VPN on a Cisco IOS XR router. The engineer needs to verify that the VPNv4 route reflectors are correctly propagating VPNv4 prefixes. Which two commands would be most useful to confirm that the route reflectors are functioning as expected? (Choose two.)

Question 78easymultiple choice

A network technician is configuring a Cisco router for the first time. The router needs to forward packets to a remote network 172.16.1.0/24 via next-hop 10.0.0.2. Which command correctly configures a static route for this purpose?

Question 79hardmultiple choice

A network engineer is configuring a DMVPN Phase 3 network with OSPF as the routing protocol. The hub router is configured with 'ip nhrp redirect' and spoke routers with 'ip nhrp shortcut'. The engineer notices that spoke-to-spoke traffic is still going through the hub. Which action should be taken to enable direct spoke-to-spoke communication?

Question 80hardmultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to forward traffic from subnet 10.1.1.0/24 to next-hop 192.168.1.1, but only for HTTP traffic (TCP port 80). Other traffic should follow the normal routing table. Which configuration achieves this?

Question 81hardmulti select

A network engineer is implementing route redistribution between OSPF and EIGRP on a Cisco router. The engineer wants to redistribute EIGRP routes into OSPF and OSPF routes into EIGRP. Which two commands are required to accomplish this? (Choose two.)

Question 82mediummultiple choice

A network engineer is troubleshooting a routing loop between two OSPF routers. The engineer notices that Router A is receiving Router B's Router-LSA with a sequence number that is lower than the one currently in its link-state database. What is the most likely cause of this issue?

Question 83hardmultiple choice

A network engineer is deploying a DMVPN Phase 3 network with EIGRP as the routing protocol. The engineer wants to optimize traffic flow so that spoke-to-spoke traffic does not traverse the hub. Which configuration is required on the hub to enable spoke-to-spoke direct communication?

Question 84hardmultiple choice

A network engineer is configuring OSPFv3 on a router. The engineer wants to enable OSPFv3 on an interface and ensure that the interface is part of area 0. Which command is required under interface configuration mode?

Question 85mediummultiple choice

A network engineer is configuring route redistribution between OSPF and EIGRP on a border router. The engineer wants to redistribute EIGRP routes into OSPF and set the OSPF metric to 20. Which command correctly accomplishes this?

Question 86hardmultiple choice

A network administrator is configuring EIGRP on a router and wants to ensure that only specific routes are advertised to a neighbor. The administrator uses a distribute-list with a route-map. Which of the following is a valid match condition in the route-map to filter routes based on their metric?

Question 87mediummultiple choice

A network engineer is configuring OSPF on a router connected to a broadcast Ethernet segment shared with three other OSPF routers. The engineer notices that the router is not forming an adjacency with any of the other routers. The interface is up/up, and the OSPF network type is broadcast. Which of the following is the most likely cause?

Question 88hardmultiple choice

A network engineer is troubleshooting a BGP neighbor relationship that is stuck in Active state. The engineer verifies that IP connectivity is good and that the neighbor's IP address is reachable. What is a possible cause for this issue?

Question 89hardmultiple choice

A network administrator is troubleshooting an EIGRP network. Router R1 has a route to 10.1.1.0/24 with a reported distance of 1000 and a feasible distance of 1500. Router R2 advertises the same prefix with a reported distance of 1200. R1's feasible distance to the successor is 1500. Which of the following statements is true regarding EIGRP feasibility condition for R2's advertisement?

Question 90easymultiple choice

A network technician is configuring a static route on a Cisco IOS router. The goal is to forward all traffic destined for 192.168.1.0/24 to next-hop 10.0.0.1, but only if the next-hop is reachable via the directly connected interface GigabitEthernet0/0. Which command should be used?

Question 91mediummultiple choice

A network engineer is troubleshooting an OSPF adjacency between two routers on a broadcast Ethernet segment. Router R1 is configured with the ip ospf priority 0 command on its GigabitEthernet0/0 interface. Router R2 has default priority. The engineer observes that the adjacency remains in the 2-WAY state and no DR/BDR election occurs. Which action resolves this issue?

Question 92mediummultiple choice

A network engineer is configuring OSPFv3 on a router that connects to an IPv6-only segment. The router must establish an OSPFv3 adjacency with a neighboring router over a link where the global unicast addresses are not reachable. Which command is required to enable OSPFv3 on the interface and allow the adjacency to form?

Question 93hardmultiple choice

A network engineer is troubleshooting an EIGRP adjacency issue between two routers. The routers are directly connected via Gigabit Ethernet. The engineer notices that the adjacency is stuck in the EXSTART state. Which of the following is the most likely cause?

Question 94hardmulti select

A network engineer is troubleshooting an EIGRP adjacency that is stuck in the ACTIVE state. The engineer suspects a mismatch in EIGRP parameters. Which two parameters must match for an EIGRP adjacency to form and remain stable? (Choose two.)

Question 95mediummulti select

A network engineer is troubleshooting a DMVPN Phase 3 network using OSPF. The hub router is not receiving routes from a spoke router. The engineer verifies that the tunnel interface is up and IPsec is working. Which two actions should the engineer take to allow OSPF to form an adjacency over the DMVPN tunnel? (Choose two.)

Question 96mediummultiple choice

A network administrator is configuring a GRE tunnel between two Cisco routers. The tunnel source is a loopback interface, and the tunnel destination is a loopback interface on the remote router. The administrator notices that the tunnel interface is up, but no traffic is passing through. What is the most likely cause?

Question 97hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency that is stuck in the ACTIVE state. The router has sent queries to its neighbors but has not received all replies. Which action should the administrator take to resolve this issue while minimizing network disruption?

Question 98hardmultiple choice

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A network administrator is troubleshooting an EIGRP adjacency that is stuck in the ACTIVE state. The router is running EIGRP AS 100 and has a single feasible successor for the destination network 10.1.1.0/24. The administrator issues the show ip eigrp topology command and sees that the feasible successor has a reported distance of 1500 and a feasible distance of 2000. The successor has a feasible distance of 1800. What is the most likely cause of the stuck-in-ACTIVE state?

Question 99mediummultiple choice

A network administrator is configuring a GRE tunnel between two Cisco routers. The tunnel interface is configured with the tunnel mode gre ip command. The administrator wants to ensure that the tunnel can carry multicast traffic. Which additional configuration is required?

Question 100mediummultiple choice

A network engineer is configuring a Cisco IOS router to support VRF-lite. The router has two VRFs: VRF-A and VRF-B. The engineer wants to enable OSPFv2 in each VRF and ensure that routes from VRF-A are not leaked into VRF-B. Which configuration is correct?

Question 101hardmulti select

A network engineer is troubleshooting a BGP neighbor relationship that is stuck in the Active state. The engineer has verified that IP connectivity exists between the two routers, and that the BGP configurations are correct. Which two actions could resolve the issue? (Choose two.)

Question 102hardmultiple choice

A network engineer is troubleshooting an MPLS L3VPN where customer routes are not being advertised between PE routers. The engineer verifies that the MP-BGP session between the PE routers is established and that VRFs are configured correctly. Which of the following is the most likely cause for the missing routes?

Question 103mediummultiple choice

A network engineer is configuring EIGRP on a Cisco IOS XE router. The router has two paths to a remote network: one via a 100 Mbps link and another via a 10 Mbps link. The engineer wants EIGRP to use the 100 Mbps link as the primary path and the 10 Mbps link as a backup only if the primary fails. Which EIGRP feature should the engineer configure to achieve this?

Question 104hardmultiple choice

A network engineer is configuring a Cisco IOS-XE router for MPLS Layer 3 VPN. The engineer wants to ensure that the router can forward MPLS packets received from a core-facing interface to a CE-facing interface. The router is a PE router. Which configuration is required to enable this forwarding?

Question 105mediummulti select

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. The goal is to route traffic from a specific subnet to a next-hop IP address that is not directly connected. The engineer uses a route map with a `set ip next-hop` statement. Which two statements are true regarding this configuration? (Choose two.)

Question 106mediummultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. A route-map named PBR-MAP is applied to interface GigabitEthernet0/0 with the command `ip policy route-map PBR-MAP`. The route-map contains a single sequence: `route-map PBR-MAP permit 10` with `match ip address 101` and `set ip next-hop 10.1.1.2`. Access-list 101 permits traffic from 192.168.1.0/24 to any destination. After applying the configuration, the engineer notices that traffic from 192.168.1.0/24 is still being forwarded according to the routing table instead of the next-hop 10.1.1.2. Which action will resolve this issue?

Question 107mediummultiple choice

A network engineer is configuring a Cisco IOS XE router to connect to an MPLS Layer 3 VPN service provider. The engineer needs to exchange routes with the provider's PE router using BGP. The provider has assigned the customer an AS number of 65001, and the PE router uses AS 65000. The engineer wants to ensure that the BGP session is established and routes are exchanged correctly. Which BGP configuration is required on the CE router?

Question 108mediummulti select

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. The engineer wants to route traffic from a specific source subnet to a next-hop IP that is not in the routing table, using a route-map. The route-map must match packets based on source address and set the next-hop to 192.168.2.1. Which two statements are true about this configuration? (Choose two.)

Question 109mediummultiple choice

A network engineer is configuring a Cisco IOS XE router to redistribute routes from OSPF into EIGRP. The engineer wants to ensure that only specific OSPF routes are redistributed and that the redistribution is not causing routing loops. The engineer uses a route-map named OSPF-TO-EIGRP with a match on a prefix-list. However, after applying the configuration, the engineer notices that some OSPF routes are still being redistributed even though they are not permitted by the prefix-list. Which action should the engineer take to resolve this issue?

Question 110hardmultiple choice

A network engineer is implementing BGP route reflectors in an IBGP network. The engineer configures R1 as a route reflector with two clients, R2 and R3. R1 is also a client of another route reflector, R4. R2 advertises a route to R1. Which routers will receive this route from R1?

Question 111mediummultiple choice

A network engineer is configuring EIGRP for IPv6 on a Cisco IOS-XE router. The engineer wants to enable EIGRP on interface GigabitEthernet0/0 and ensure that the router participates in EIGRP autonomous system 100. Which configuration is correct?

Question 112easymultiple choice

A network engineer is configuring EIGRP on a Cisco IOS XE router. The engineer wants to limit the scope of EIGRP queries to prevent them from propagating beyond a specific router. Which EIGRP feature should the engineer configure on the interface facing the remote network?

Question 113hardmultiple choice

A network engineer is configuring a Cisco IOS XE router for OSPFv2. The router is an ABR connected to Area 0 and Area 1. Area 1 is a not-so-stubby area (NSSA). The engineer wants to summarize the Type-7 LSAs from Area 1 into Type-5 LSAs for Area 0. Which command should the engineer use on the ABR to accomplish this?

Question 114mediummultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS-XE router. The engineer wants to route traffic from subnet 10.10.10.0/24 that is destined for any address to next-hop 192.168.1.1, except for traffic destined to 10.20.20.0/24, which should be routed normally. Which configuration achieves this?

Question 115hardmultiple choice

A network engineer is configuring BGP on a Cisco IOS XE router. The router is peering with an ISP and receives a full BGP table. The engineer wants to filter incoming routes so that only routes with a specific community value (65000:100) are accepted, and all other routes are discarded. Which BGP configuration achieves this?

Question 116mediummultiple choice

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A network engineer is configuring BGP on a Cisco IOS XE router. The router has two eBGP peers: one in AS 65001 and one in AS 65002. The engineer wants to influence outbound traffic by preferring the path through AS 65001. Which BGP attribute should be modified, and how, to accomplish this?

Question 117mediummultiple choice

A network engineer is configuring a Cisco IOS XE router as a DHCP relay. The router has two interfaces: GigabitEthernet0/0 (10.1.1.1/24) facing clients and GigabitEthernet0/1 (192.168.1.1/30) facing the DHCP server at 192.168.1.2. The engineer enters the command `ip helper-address 192.168.1.2` under interface GigabitEthernet0/0. However, clients are not receiving IP addresses. What is the most likely cause?

Question 118mediummultiple choice

A network engineer is configuring Policy-Based Routing (PBR) on a Cisco IOS XE router. The engineer wants traffic from the 10.1.1.0/24 subnet to be forwarded to next-hop 192.168.1.2, but only if the destination is 172.16.1.0/24. All other traffic from that subnet should use the normal routing table. The engineer creates a route map named PBR-MAP with a sequence 10 that matches an ACL for 10.1.1.0/24 and sets the next-hop to 192.168.1.2, and applies it to interface GigabitEthernet0/0 with the command `ip policy route-map PBR-MAP`. However, traffic to 172.16.1.0/24 is not being policy-routed. What is the most likely cause?

Question 119mediummulti select

A network engineer is configuring a Cisco IOS XE router for MPLS Layer 3 VPN. The router is a PE router that must exchange VPNv4 routes with another PE router. The engineer has enabled MPLS LDP on the core interfaces and configured VRFs. Which two additional configurations are required to establish the MP-BGP session and exchange VPNv4 routes? (Choose two.)

Question 120hardmultiple choice

A network engineer is implementing MPLS Layer 3 VPN on a Cisco IOS XE router. The engineer configures a VRF named CUSTOMER on the PE router and assigns interface GigabitEthernet0/1 to it. The PE router must exchange VPNv4 routes with a remote PE router using MP-BGP. The engineer configures BGP with the address-family vpnv4 and activates the neighbor. However, the remote PE router does not receive the VPNv4 routes. Which additional configuration is required on the PE router to allow the VPNv4 routes to be advertised?

Question 121mediummulti select

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 (10.1.1.1/24) and GigabitEthernet0/1 (10.2.2.1/24). The engineer wants to route traffic from subnet 10.1.1.0/24 to a next-hop 10.2.2.2 for HTTP traffic, while all other traffic follows the routing table. The engineer creates a route map named PBR-MAP with a match statement for HTTP and a set statement for the next-hop. Which two additional steps are required to complete the configuration? (Choose two.)

Question 122easymultiple choice

A network engineer is configuring a Cisco IOS XE router to support IPv6. The router needs to obtain an IPv6 address automatically from the local link and then use that address to communicate with other devices on the same link. Which command should be used on the interface to enable this behavior?

Question 123easymultiple choice

A network administrator is configuring a Cisco IOS XE router to authenticate EIGRP neighbors using SHA-256. The router is running EIGRP AS 100. Which command correctly enables SHA-256 authentication for EIGRP on the interface GigabitEthernet0/0?

Question 124hardmultiple choice

A network engineer is troubleshooting an EIGRP network. Router R1 is not forming an adjacency with R2 over a Frame Relay point-to-point subinterface. The engineer verifies that IP connectivity exists and that EIGRP is enabled on the interface with the correct AS number. Which action is most likely to resolve the adjacency issue?

Question 125mediummulti select

A network engineer is configuring EIGRP named mode on a Cisco IOS XE router. The engineer wants to enable authentication for EIGRP neighbors using SHA-256. Which two commands are required to complete the authentication configuration? (Choose two.)

Question 126mediummultiple choice

A network engineer is configuring a Cisco IOS-XE router to redistribute routes from EIGRP AS 100 into OSPF process 1. The EIGRP routes include several external routes that were learned from another autonomous system. The engineer wants to ensure that only internal EIGRP routes are redistributed into OSPF. Which command should be used?

Question 127mediummultiple choice

A network engineer is deploying a DMVPN Phase 3 hub-and-spoke topology using Cisco IOS XE routers. The hub router is configured with `ip nhrp redirect` and each spoke with `ip nhrp shortcut`. The engineer notices that spoke-to-spoke traffic is still flowing through the hub instead of taking a direct path. Which action should the engineer take to enable direct spoke-to-spoke communication?

Question 128mediummultiple choice

A network engineer is troubleshooting an OSPFv2 adjacency between two Cisco IOS-XE routers on a broadcast segment. The adjacency remains in EXSTART state. The engineer verifies that the interface MTU values match and that both routers are in the same area. Which command should the engineer use to further diagnose the issue?

Question 129hardmultiple choice

A network engineer is configuring a static route on a Cisco IOS XE router to reach the network 10.10.10.0/24 via the next-hop 192.168.1.1. The engineer wants the route to be used only if the next-hop is reachable via a specific interface, GigabitEthernet0/1. Which configuration achieves this requirement?

Question 130easymultiple choice

A network engineer is configuring a Cisco IOS XE router for IPv6 OSPFv3. The router is connected to a single broadcast segment and must form an adjacency with a neighbor. The engineer has enabled IPv6 unicast routing and configured an IPv6 address on the interface. Which additional command is required on the interface to enable OSPFv3?

Question 131easymultiple choice

A network engineer is configuring a Cisco IOS-XE router to authenticate OSPFv2 neighbors using MD5. The engineer wants to ensure that only routers with the correct password can form an adjacency. Which command is required on the interface?

Question 132mediummulti select

A network engineer is configuring OSPFv3 on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 and GigabitEthernet0/1. The engineer wants to enable OSPFv3 on both interfaces and ensure that they participate in area 0. Which two commands are required to accomplish this? (Choose two.)

Question 133hardmultiple choice

A network engineer is troubleshooting an OSPFv2 network. Area 0 consists of four routers: R1, R2, R3, and R4. R1 is the designated router (DR) on the broadcast segment connecting all four routers. R2 is the backup designated router (BDR). The engineer notices that R3 and R4 are not forming full adjacencies with R1 and R2. The engineer verifies that the OSPF network type is broadcast, hello and dead timers match, and area IDs are correct. What is the most likely cause of the adjacency issue?

Question 134mediummultiple choice

A network engineer is configuring OSPFv2 on a Cisco IOS XE router. The router is connected to a broadcast multi-access segment with three other OSPF routers. The engineer wants to ensure that this router becomes the Designated Router (DR) for the segment, and that it does not relinquish the DR role if another router with a higher priority is added later. Which configuration achieves this?

Question 135hardmulti select

A network engineer is configuring BGP on a Cisco IOS-XE router. The engineer wants to influence inbound traffic from an ISP by making one path more preferred than another. The engineer plans to use BGP attributes. Which two actions should the engineer take? (Choose two.)

Question 136hardmultiple choice

A network engineer is configuring EIGRP named mode on a Cisco IOS XE router. The engineer wants to ensure that the router advertises a default route into the EIGRP domain only when a specific prefix (10.1.1.0/24) is present in the routing table. Which configuration accomplishes this?

Question 137hardmultiple choice

A network engineer is deploying DMVPN Phase 3 with EIGRP as the routing protocol. The hub router is configured with `ip nhrp redirect` and spoke routers with `ip nhrp shortcut`. Spokes successfully register with the hub and receive routes, but spoke-to-spoke traffic still traverses the hub instead of building direct tunnels. Which action should the engineer take to enable direct spoke-to-spoke tunnels?

Question 138hardmultiple choice

A network engineer is troubleshooting an OSPFv2 network. Area 0 consists of four routers connected via a Frame Relay hub-and-spoke topology using physical interfaces. The hub router (R1) is configured with `ip ospf network non-broadcast`. The spoke routers (R2, R3, R4) are configured with `ip ospf network non-broadcast` as well. The engineer notices that R2, R3, and R4 form adjacencies with R1, but no adjacencies form between the spokes. Which configuration change is required to allow full adjacency among all routers?

Question 139hardmulti select

A network engineer is troubleshooting a Cisco IOS XE router that runs MPLS L3VPN. The router is a PE and must exchange VPNv4 routes with a route reflector (RR). The engineer notices that VPNv4 prefixes are not being advertised to the RR. Which two configuration elements are required to enable VPNv4 route exchange? (Choose two.)

Question 140mediummultiple choice

A network engineer is configuring EIGRP on a Cisco IOS XE router. The engineer wants to ensure that the router does not advertise a specific prefix (10.10.10.0/24) out of interface GigabitEthernet0/0, but still advertises all other prefixes in the same EIGRP autonomous system. Which configuration achieves this?

Question 141hardmulti select

A network engineer is configuring a Cisco IOS XE router for MPLS Layer 3 VPN. The engineer has enabled MPLS IP on the core interfaces and configured VRFs. The engineer now needs to enable MP-BGP to exchange VPNv4 prefixes with a remote PE router. Which two statements about the required MP-BGP configuration are true? (Choose two.)

Question 142easymultiple choice

A network engineer is configuring a Cisco IOS XE router to authenticate OSPFv2 neighbors using MD5. The router is running OSPF process 1 and is connected to a broadcast network. The engineer wants to enable MD5 authentication on interface GigabitEthernet0/0 with key ID 1 and password 'Cisco123'. Which configuration is correct?

Question 143mediummultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 hub-and-spoke topology. Spoke routers are Cisco IOS devices running EIGRP as the routing protocol. The engineer wants to ensure that spoke-to-spoke traffic does not go through the hub after the initial path setup, and that spoke routers can dynamically form direct tunnels. Which NHRP command must be configured on the hub to enable this behavior?

Question 144easymultiple choice

A network engineer is configuring a static route on a Cisco IOS router to reach the network 192.168.2.0/24 via the next-hop address 10.1.1.2. The engineer enters the command 'ip route 192.168.2.0 255.255.255.0 10.1.1.2'. However, the route does not appear in the routing table. What is the most likely reason?

Question 145mediummultiple choice

A network engineer is configuring OSPFv3 on a Cisco router. The router has two interfaces in Area 0: GigabitEthernet0/0 (IPv6 address 2001:db8:1::1/64) and GigabitEthernet0/1 (IPv6 address 2001:db8:2::1/64). After enabling IPv6 unicast routing and configuring OSPFv3 with the router-id 1.1.1.1, the engineer notices that no OSPFv3 neighbors are forming. Which action is most likely to resolve the issue?

Question 146hardmultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS router. The engineer wants to route traffic from subnet 10.1.1.0/24 to a specific next-hop 192.168.1.1, while all other traffic uses the default route. The engineer configures a route map named PBR with a match statement for the subnet and a set statement for the next-hop, and applies it to the inbound interface of the subnet. However, traffic from 10.1.1.0/24 is still following the default route. What is the most likely reason?

Question 147hardmulti select

A network engineer is configuring MPLS Layer 3 VPN on a Cisco IOS XR router. The engineer needs to ensure that customer routes are properly propagated across the MPLS core. Which two of the following are required to establish the VPNv4 peering between PE routers? (Choose two.)

Question 148easymultiple choice

A network engineer is configuring EIGRP on a Cisco router. The router has two interfaces: GigabitEthernet0/0 with IP address 10.1.1.1/24 and GigabitEthernet0/1 with IP address 10.2.2.1/24. The engineer wants to advertise both networks into EIGRP AS 100. Which configuration command is required to enable EIGRP on the interfaces?

Question 149hardmultiple choice

A network administrator is troubleshooting an OSPFv3 network. Routers R1 and R2 are in the same area and on the same broadcast segment, but they are not forming an adjacency. The administrator verifies that the interfaces are up and IPv6 addresses are configured correctly. Which command should be used to check if OSPFv3 is enabled on the interfaces?

Question 150mediummultiple choice

A network engineer is configuring a route map for BGP policy. The engineer wants to match routes that originate from AS 65001 and have a community value of 100:200. The route map should then set the local preference to 200. Which configuration snippet accomplishes this?

Question 151mediummulti select

A network engineer is configuring policy-based routing (PBR) on a Cisco router. The router has two interfaces: GigabitEthernet0/0 (LAN) and GigabitEthernet0/1 (WAN). The engineer wants to route traffic from the 192.168.1.0/24 subnet to a next-hop of 10.1.1.2, and all other traffic should follow the default routing table. Which two steps are required to implement this? (Choose two.)

Question 152hardmultiple choice

A network engineer is implementing MPLS Layer 3 VPNs. The engineer needs to configure a PE router to exchange VPNv4 routes with other PE routers. Which BGP configuration is required to enable the exchange of VPNv4 routes?

Question 153hardmultiple choice

A network engineer is configuring a GRE tunnel between two Cisco routers across an ISP network. The tunnel source is GigabitEthernet0/0 (IP 203.0.113.1) and the tunnel destination is 203.0.113.2. The engineer notices that the tunnel interface is up, but no traffic is passing through it. The engineer suspects a routing issue. Which command should be used to verify that the tunnel endpoint is reachable?

Question 154mediummultiple choice

A network engineer is configuring OSPF on a router with three interfaces: Gi0/0 (10.1.1.1/24), Gi0/1 (10.2.2.1/24), and Gi0/2 (10.3.3.1/24). The engineer wants to prevent OSPF from forming adjacencies on Gi0/2 while still advertising the 10.3.3.0/24 network into OSPF. Which configuration accomplishes this?

Question 155easymultiple choice

A network technician is configuring a static route on a Cisco IOS router. The requirement is to forward all traffic destined to the 192.168.1.0/24 network to the next-hop IP address 10.1.1.1. Which command accomplishes this?

Question 156mediummultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco IOS router. The engineer wants to route traffic from the 10.1.1.0/24 subnet to a next-hop of 192.168.1.1, while all other traffic uses the default routing table. Which configuration correctly implements this?

Question 157mediummultiple choice

A network engineer is configuring OSPFv3 on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 in Area 0 and GigabitEthernet0/1 in Area 1. The engineer wants to ensure that the router acts as an ABR and that inter-area routes are summarized. Which command must be configured under the OSPFv3 router configuration mode to enable ABR functionality?

Question 158easymultiple choice

A network technician is configuring a static route on a Cisco router. The technician wants to ensure that the static route is only used when the primary route is unavailable. Which type of static route should be configured?

Question 159hardmultiple choice

A network engineer is implementing MPLS Layer 3 VPN on a Cisco IOS-XE router. The engineer needs to configure the PE router to exchange VPNv4 routes with other PE routers. Which address family must be configured under the BGP routing process to enable VPNv4 route exchange?

Question 160hardmultiple choice

A network administrator is troubleshooting an EIGRP named mode configuration on a Cisco IOS XE router. The router is not forming an adjacency with a neighbor. The administrator verifies that the AS number is 100, the K-values are default, and authentication is not configured. Which command should be used to verify the EIGRP hello and hold timers on the interface?

Question 161mediummultiple choice

A network administrator is implementing MPLS Layer 3 VPNs. The administrator wants to ensure that customer routes are not leaked between different VRFs on the same PE router. Which mechanism should be used to isolate the VRFs?

Question 162easymultiple choice

A network engineer is configuring a static route on a Cisco IOS router to reach the network 10.1.1.0/24 via the next-hop 192.168.1.1. The engineer wants the route to be removed from the routing table if the next-hop becomes unreachable. Which command should be used?

Question 163hardmulti select

A network engineer is deploying OSPFv3 in an IPv6 network. The engineer wants to enable OSPFv3 on a router and ensure that it can form adjacencies with neighbors. Which two commands are required on the router to enable OSPFv3 globally and on an interface? (Choose two.)

Question 164mediummultiple choice

A network engineer is implementing Policy-Based Routing (PBR) on a Cisco IOS router. The engineer wants to route traffic from subnet 10.10.10.0/24 to a next-hop of 192.168.2.2, but only for HTTP traffic (TCP port 80). Which configuration sequence is required?

Question 165mediummultiple choice

A network engineer is configuring Policy-Based Routing (PBR) on a Cisco router. The goal is to forward all HTTP traffic (TCP port 80) from the 10.1.1.0/24 subnet to next-hop 192.168.2.1. Which configuration sequence is correct?

Question 166hardmultiple choice

A network administrator is troubleshooting an EIGRP adjacency that is stuck in the ACTIVE state. The adjacency is between two routers, R1 and R2, on a point-to-point link. The administrator notices that R1 is sending queries but not receiving replies. Which of the following is the most likely cause?

Question 167hardmultiple choice

A network administrator is troubleshooting a DMVPN Phase 3 network using OSPF. Spoke routers are not learning routes from other spokes despite having a full mesh of tunnels. The hub is configured with 'ip nhrp redirect' and spokes with 'ip nhrp shortcut'. Which action is most likely to resolve the issue?

Question 168hardmultiple choice

A network administrator is troubleshooting a route redistribution issue on a Cisco router running both EIGRP and OSPF. The router is redistributing EIGRP routes into OSPF, but the routes are not appearing in the OSPF domain. The administrator has configured redistribution with a seed metric of 20. Which additional configuration is required to ensure the routes are advertised?

Question 169easymultiple choice

A network engineer is configuring a static route on a Cisco IOS router. The engineer wants the route to be used only if the primary route fails. Which command should be used to configure a floating static route?

Question 170mediummultiple choice

A network engineer is configuring OSPF on a Cisco router. The router has two interfaces in Area 0: GigabitEthernet0/0 (10.1.1.1/24) and GigabitEthernet0/1 (10.2.2.1/24). The engineer wants to ensure that the router ID is always 10.1.1.1, regardless of interface status. Which command should be used?

Question 171easymultiple choice

A network technician is configuring a static route on a Cisco router to reach a remote network. The technician wants the route to be used only if the primary path fails. Which type of static route should be configured?

Question 172mediummultiple choice

A network engineer is configuring OSPF on a Cisco router. The router has three interfaces in Area 0, and the engineer wants to ensure that the router does not become a Designated Router (DR) on any of these interfaces. Which command should be used on each interface?

Question 173hardmultiple choice

A network administrator is troubleshooting an OSPFv3 network. Router R1 is configured with the following:

ipv6 unicast-routing

interface GigabitEthernet0/0

ipv6 address 2001:DB8:1::1/64 ipv6 ospf 1 area 0 ipv6 ospf network point-to-point !

router ospf 1

router-id 1.1.1.1 !

R1 is not forming an adjacency with R2, which is configured with:

interface GigabitEthernet0/0

ipv6 address 2001:DB8:1::2/64 ipv6 ospf 1 area 0 ipv6 ospf network broadcast !

router ospf 1

router-id 2.2.2.2

What is the most likely reason for the adjacency failure?

Question 174mediummultiple choice

A network engineer is deploying MPLS Layer 3 VPNs. The engineer must ensure that the PE routers can forward VPN traffic correctly. The following configuration is applied on a PE router:

ip vrf CUSTOMER

rd 65000:1 route-target export 65000:1 route-target import 65000:1 !

interface GigabitEthernet0/1
 ip vrf forwarding CUSTOMER
 ip address 192.168.1.1 255.255.255.0

After configuration, the engineer notices that the CE router cannot reach remote sites. The MPLS core is operational, and MP-BGP is configured. What is the most likely missing configuration?

Question 175easymultiple choice

A network administrator is configuring a GRE tunnel between two Cisco routers to transport IPv6 traffic over an IPv4-only core. The administrator enters the following configuration on Router A:

interface Tunnel0

ipv6 address 2001:DB8:100::1/64 tunnel source 10.1.1.1 tunnel destination 10.2.2.2 tunnel mode gre ipv6

However, the tunnel interface remains down. What is the most likely cause?

Question 176mediummultiple choice

A network engineer is configuring OSPF on a router with three interfaces: GigabitEthernet0/0 (10.1.1.1/24), GigabitEthernet0/1 (10.2.2.1/24), and Loopback0 (192.168.1.1/24). The engineer wants to ensure that the router ID is 192.168.1.1 and that it remains stable even if the Loopback0 interface flaps. Which command should be applied?

Question 177hardmultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using OSPF. Spoke routers are unable to form OSPF adjacencies with each other directly, even though they can reach the hub. The engineer wants to enable direct spoke-to-spoke communication. Which configuration is required on the hub?

Question 178hardmultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to route traffic from a specific subnet to a next-hop IP address that is not directly connected. Which configuration is required to achieve this?

Question 179mediummultiple choice

A network engineer at a branch office is configuring OSPFv3 on a dual-stack router. The router must form an adjacency with a neighboring router that is also running OSPFv3. The engineer notices that the neighbor relationship remains in EXSTART state. Which command should be used to verify the OSPFv3 interface parameters that could cause this issue?

Question 180mediummultiple choice

An engineer configures a Cisco IOS router with two static routes to the 10.10.0.0/16 network: one via 192.168.1.1 with administrative distance 1, and another via 192.168.2.1 with administrative distance 200. The route via 192.168.1.1 is installed in the routing table. Later, the interface to 192.168.1.1 goes down. Which statement describes the router's behavior?

Question 181mediummultiple choice

A network engineer is configuring OSPF on a router that connects to a service provider via a WAN link. The provider requires that the link be treated as a point-to-point connection without DR/BDR election, and the OSPF network type must be explicitly set to achieve this. Which command should be applied to the interface?

Question 182mediummultiple choice

A network engineer is configuring OSPFv3 on a router that connects to an IPv6 network. The router must form an adjacency with a neighbor on the same segment, but the engineer notices that the router is not sending any OSPFv3 Hello packets. The interface is up, and IPv6 unicast routing is enabled globally. Which of the following is the most likely cause?

Question 183mediummultiple choice

A network engineer is configuring OSPFv3 on a dual-stack router. The router must form an adjacency with a neighbor over a link that supports both IPv4 and IPv6. The interface is configured with 'ipv6 ospf 1 area 0' and the router ID is manually set to 10.1.1.1. After applying the configuration, the engineer notices that the OSPFv3 adjacency remains in EXSTART state. What is the most likely cause?

Question 184mediummultiple choice

A network engineer is configuring MPLS Layer 3 VPN on a Cisco router. The engineer wants to ensure that the PE router can forward VPN traffic to the correct CE router based on the route target. Which of the following is required on the PE router?

Question 185easymultiple choice

A network engineer is configuring a static route on a Cisco IOS router to reach a remote network. The engineer wants the route to be used only if the primary path fails and to be removed from the routing table when the primary path is available. Which type of static route should be configured?

Question 186hardmulti select

A network administrator is troubleshooting a DMVPN Phase 3 deployment using mGRE and IPsec. Spoke-to-spoke communication is not working directly; traffic is flowing through the hub. The administrator verifies that NHRP registrations are successful and that the hub has a route to all spokes. Which two actions are required to enable direct spoke-to-spoke communication? (Choose two.)

Question 187hardmultiple choice

A network administrator is troubleshooting an EIGRP network where a router is not receiving all expected routes from a neighbor. The neighbor relationship is established, and the topology table shows only a subset of routes. Which EIGRP feature could be filtering the routes?

Question 188easymultiple choice

An engineer is configuring a GRE tunnel between two Cisco routers. The tunnel source is a physical interface, and the tunnel destination is the remote router's physical interface. After configuration, the tunnel interface is up, but no traffic passes through it. The engineer verifies that the physical interfaces are up and IP connectivity exists between the tunnel endpoints. What is the most likely cause?

Question 189easymultiple choice

Which command correctly configures a static route on a Cisco IOS router to reach the network 172.16.0.0/16 via the next-hop address 10.1.1.1?

Question 190mediummultiple choice

A network engineer is configuring MPLS Layer 3 VPN on a Cisco IOS XE router. The engineer needs to enable the provider edge (PE) router to exchange VPNv4 routes with another PE router. Which address family must be configured under the BGP routing process to achieve this?

Question 191mediummultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to forward traffic from a specific subnet to a next-hop IP address that is not directly connected, but reachable via a recursive lookup. The engineer configures a route-map with 'set ip next-hop recursive <IP>'. However, traffic is not being forwarded as expected. Which of the following is the most likely reason?

Question 192mediummultiple choice

A network engineer is configuring EIGRP on a Cisco router. The router has two paths to the same destination network with different metrics. The engineer wants to enable unequal-cost load balancing. Which command must be configured to allow EIGRP to use the higher-cost path?

Question 193hardmultiple choice

A network engineer is configuring OSPFv2 on a multiaccess segment. The engineer wants to ensure that the designated router (DR) election is deterministic and that a specific router becomes the DR. The router has the highest OSPF priority on the segment, but it is not becoming the DR. What could be the reason?

Question 194hardmultiple choice

A network administrator is configuring OSPF on a Cisco router. The router is connected to two different OSPF areas: Area 0 and Area 1. The administrator wants to summarize routes from Area 1 into Area 0. Which command should be used on the Area Border Router (ABR) to accomplish this?

Question 195hardmultiple choice

A network administrator is troubleshooting an OSPFv3 network. Router R1 is not forming an adjacency with Router R2 over a point-to-point link. The administrator verifies that the interfaces are up, IPv6 addresses are configured, and OSPFv3 is enabled on both interfaces. The output of 'show ipv6 ospf interface' on R1 shows that the interface is in the 'LOOPBACK' state. What is the most likely reason for this state?

Question 196hardmulti select

A network administrator is troubleshooting a DMVPN Phase 3 network using OSPF as the routing protocol. Spoke routers are not learning routes from other spokes. Which two actions should be taken to resolve this issue? (Choose two.)

Question 197easymultiple choice

A network technician is configuring a Cisco router to forward traffic to a remote network. The technician enters the command 'ip route 172.16.0.0 255.255.0.0 10.0.0.1'. However, the router does not install the route in its routing table. What is the most likely reason?

Question 198mediummultiple choice

A network engineer is configuring a GRE tunnel between two routers. The tunnel interface is up, but OSPF neighbors are not forming. The engineer suspects a Layer 3 issue. Which command should be used to verify that the tunnel endpoints are reachable?

Question 199mediummultiple choice

A network engineer is configuring a Cisco router to authenticate OSPF neighbors using MD5. The router is connected to two OSPF neighbors on the same subnet. The engineer wants to enable MD5 authentication on the interface with a key ID of 1 and a password of 'Cisco123'. Which command sequence correctly accomplishes this?

Question 200easymultiple choice

A network technician is configuring a Cisco IOS router to authenticate OSPFv2 neighbors using MD5. The technician enters the following commands:

interface GigabitEthernet0/0
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 cisco

After applying the configuration, the router does not form an adjacency with its neighbor. What is the most likely reason?

Question 201mediummultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 deployment on a Cisco IOS XE router. The hub router is configured with 'ip nhrp redirect' and the spoke routers with 'ip nhrp shortcut'. However, spoke-to-spoke traffic is still traversing the hub. Which action should the engineer take to enable direct spoke-to-spoke communication?

Question 202easymultiple choice

A network engineer is configuring EIGRP on a router. The engineer wants to ensure that the router does not send EIGRP updates out of an interface connected to a non-EIGRP neighbor, but still advertises the connected network into EIGRP. Which configuration command should be used?

Question 203mediummultiple choice

A network engineer is implementing MPLS Layer 3 VPNs. The engineer wants to ensure that customer routes are propagated across the MPLS core. Which protocol is typically used within the provider core to distribute VPNv4 routes?

Question 204hardmultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS router. The engineer wants traffic from a specific subnet to be routed via a next-hop IP address that is not directly connected. Which command is required under the route-map configuration?

Question 205mediummultiple choice

A network administrator is configuring EIGRP on a router and wants to ensure that only a specific subnet is advertised out of an interface. The router has the following configuration: 'router eigrp 100', 'network 10.0.0.0', 'passive-interface GigabitEthernet0/0'. The administrator wants to advertise 10.1.1.0/24 out of GigabitEthernet0/0 while preventing other subnets from being advertised. Which configuration achieves this?

Question 206hardmultiple choice

A network architect is designing a BGP routing policy to influence inbound traffic from an ISP. The architect wants to make a specific prefix less preferred by the ISP by prepending the AS path multiple times. Which BGP attribute should be manipulated to achieve this?

Question 207mediummultiple choice

A network engineer is configuring OSPF on a router. The router has an interface with IP address 10.1.1.1/24 and another interface with IP address 192.168.1.1/24. The engineer wants to enable OSPF on both interfaces using a single network command under router ospf 1. Which command accomplishes this?

Question 208hardmultiple choice

A network administrator is configuring MPLS Layer 3 VPN on a Cisco IOS XE router. The router is a PE device connected to two CE routers in different VRFs. The administrator wants to prevent routes from one VRF from being leaked into another VRF. Which configuration step is essential to maintain VRF separation?

Question 209hardmultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco router. The goal is to forward traffic from a specific source subnet to a next-hop that is not the default gateway. The engineer configures a route map with a match statement for the source subnet and a set statement for the next-hop. However, the traffic is still following the default route. What is the most likely reason?

Question 210mediummultiple choice

A network engineer is configuring OSPF on a router that connects to a broadcast Ethernet segment. The router is connected to a switch that also connects to three other OSPF routers. The engineer wants to ensure that this router does not become the Designated Router (DR) or Backup Designated Router (BDR) on this segment, but still participates in OSPF. Which configuration should the engineer apply on the router's interface?

Question 211hardmultiple choice

A network engineer is implementing route redistribution between OSPF and EIGRP on a Cisco IOS router. The engineer wants to prevent routing loops and ensure that routes redistributed from OSPF into EIGRP are not redistributed back into OSPF. Which mechanism should be used?

Question 212hardmultiple choice

A network engineer is implementing CoPP on a Cisco router to protect the control plane from DoS attacks. The engineer wants to rate-limit ICMP echo requests destined to the router's management IP address. Which CoPP policy component is responsible for defining the traffic classification?

Question 213easymultiple choice

A network technician is configuring a Cisco IOS router to authenticate EIGRP neighbors using MD5. The router is running EIGRP AS 10. Which command enables MD5 authentication for EIGRP on an interface?

Question 214mediummultiple choice

A network engineer is implementing policy-based routing (PBR) on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 (LAN) and GigabitEthernet0/1 (WAN). A route-map named PBR-MAP is applied to GigabitEthernet0/0 with the command `ip policy route-map PBR-MAP`. The route-map contains a match statement for access-list 101, which permits traffic from 10.1.1.0/24 to any destination. The set statement is `set ip next-hop 192.168.2.1`. However, traffic from 10.1.1.0/24 is still being routed according to the routing table instead of being forwarded to 192.168.2.1. Which action should the engineer take to ensure PBR is applied?

Question 215easymultiple choice

A network engineer is configuring a Cisco IOS-XE router for DMVPN Phase 3. The engineer wants to ensure that spoke-to-spoke traffic flows directly between spokes without traversing the hub. Which technology should be used to achieve this?

Question 216mediummultiple choice

A network engineer is deploying DMVPN Phase 3 with EIGRP as the routing protocol over a hub-and-spoke topology. The hub router is configured with `ip nhrp redirect` on its tunnel interface, and each spoke has `ip nhrp shortcut`. A spoke needs to send traffic to a remote subnet behind another spoke. Which mechanism allows the spoke to install a direct route to the remote spoke's tunnel IP without traversing the hub for every packet?

Question 217hardmultiple choice

A network engineer is troubleshooting a Cisco IOS XE router running OSPFv2. The router is an ABR between Area 0 and Area 1. Area 1 is configured as a Not-So-Stubby Area (NSSA). The engineer notices that a Type-7 LSA originated by an ASBR in Area 1 is not being translated into a Type-5 LSA by the ABR. Which condition would prevent the ABR from performing Type-7 to Type-5 translation?

Question 218mediummultiple choice

A network engineer is configuring Policy-Based Routing (PBR) on a Cisco IOS-XE router. The engineer wants to route traffic from the 10.1.1.0/24 subnet that is destined for any TCP port 80 to next-hop 192.168.2.1, but only for packets arriving on GigabitEthernet0/1. Other traffic should follow the normal routing table. Which configuration sequence correctly accomplishes this?

Question 219easymultiple choice

A network engineer is configuring a Cisco IOS router to run OSPFv3 for IPv6. The router must form an adjacency with a neighbor on a broadcast network. Which command is required to enable OSPFv3 on an interface?

Question 220hardmultiple choice

Read the full DHCP explanation →

A network engineer is troubleshooting a DMVPN Phase 3 network using EIGRP as the routing protocol. Spoke routers are unable to establish direct spoke-to-spoke tunnels. The engineer verifies that NHRP registration is successful and that the hub has routes to all spokes. Which action is most likely to resolve the issue?

Question 221easymultiple choice

A network engineer is configuring a Cisco IOS router as a DHCP relay agent. The router's interface GigabitEthernet0/0 is connected to a client subnet, and the DHCP server is located at 10.1.1.100. The engineer wants the router to forward DHCP requests from clients to the server and ensure that the server can assign addresses from the correct pool. Which command is required on the router?

Question 222mediummultiple choice

A network engineer is deploying BGP on a Cisco IOS XE router. The router must advertise the network 10.10.0.0/16 to an external peer, but the engineer notices that the prefix is not being advertised even though the network command is configured. The routing table shows that 10.10.0.0/16 is present as two separate /24 routes via OSPF. What is the most likely cause?

Question 223hardmultiple choice

A network engineer is configuring MPLS Layer 3 VPN on a Cisco IOS XE router. The engineer wants to enable the router to distribute VPNv4 prefixes to its PE peers. Which command must be configured under the BGP routing process to enable the address family?

Question 224mediummulti select

A network engineer is troubleshooting a DMVPN Phase 3 network using Cisco IOS XE routers. The hub router is configured with a multipoint GRE tunnel and NHRP. Spoke routers are unable to establish direct spoke-to-spoke tunnels. Which two statements describe the correct operation of DMVPN Phase 3 that could explain the issue? (Choose two.)

Question 225easymultiple choice

Read the full DHCP explanation →

A network engineer is configuring a Cisco IOS XE router to support IPv6. The engineer wants to enable IPv6 routing and assign an IPv6 address to an interface. Which command must be configured globally to enable IPv6 routing?

Question 226mediummultiple choice

A network engineer is configuring a Cisco IOS XE router as a DHCP relay agent. The router is connected to a LAN segment with DHCP clients and must forward DHCP requests to a DHCP server at 10.1.1.100. Which command must be configured on the LAN interface to enable DHCP relay?

Question 227hardmultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using Cisco IOS XE routers. Spoke routers are unable to establish direct spoke-to-spoke tunnels. The hub router is configured with 'ip nhrp redirect', and spokes are configured with 'ip nhrp shortcut'. The engineer notices that spoke routers are not receiving NHRP redirect messages from the hub. Which action should be taken to resolve this issue?

Question 228hardmultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using Cisco IOS XE routers. The hub router (Hub1) has a public IP of 203.0.113.1 and is configured with `tunnel mode gre multipoint`. Spoke routers are behind NAT devices. Spoke1 cannot establish a direct spoke-to-spoke tunnel with Spoke2, although both can reach the hub. Which technology must be enabled on the hub to allow spoke-to-spoke direct tunnels in this scenario?

Question 229hardmultiple choice

A network engineer is troubleshooting a BGP routing issue on a Cisco IOS XE router. The router is configured with a route map that sets the local preference for routes learned from a specific neighbor. However, the engineer notices that the local preference is not being applied to routes received from that neighbor. Which BGP configuration command is most likely missing?

Question 230mediummultiple choice

A network engineer is troubleshooting an OSPFv3 network. Router R1 is an ABR connected to Area 0 and Area 1. Area 1 is configured as a totally stubby area. R1 is not injecting a default route into Area 1, and routers in Area 1 cannot reach external destinations. Which command should the engineer verify on R1 to ensure that a default route is generated into Area 1?

Question 231mediummultiple choice

A network engineer is implementing MPLS Layer 3 VPN on a Cisco IOS XE router. The engineer wants to ensure that customer routes are advertised with the correct route distinguisher (RD) and route target (RT) extended communities. Which BGP address family must be configured to exchange VPNv4 routes between PE routers?

Question 232hardmultiple choice

A network engineer is configuring a Cisco IOS XE router for DMVPN Phase 3. The hub router is configured with `ip nhrp map multicast dynamic` and `ip nhrp network-id 100`. The spoke routers are configured with `ip nhrp map` and `ip nhrp nhs`. The engineer wants to enable spoke-to-spoke communication without traffic traversing the hub after the initial resolution. Which additional command is required on the hub to support Phase 3 shortcut switching?

Question 233hardmultiple choice

A network engineer is configuring a Cisco IOS XE router for MPLS Layer 3 VPN. The router is a PE connected to a CE via GigabitEthernet0/0. The engineer wants to configure a VRF named CUSTOMER_A and assign the interface to it. The engineer enters the following commands: `vrf definition CUSTOMER_A`, `rd 65000:1`, `address-family ipv4`, `exit`, `exit`. Then, under interface GigabitEthernet0/0, the engineer enters `vrf forwarding CUSTOMER_A`. After entering the command, the engineer notices that the IP address on the interface is removed. What is the most likely reason?

Question 234mediummultiple choice

A network engineer is configuring Policy-Based Routing (PBR) on a Cisco IOS XE router. The engineer wants to forward traffic matching a specific ACL to a next-hop IP address, but only if the next-hop is reachable. Which command should be used in the route map to specify the next-hop and enable tracking?

Question 235hardmultiple choice

A network engineer is implementing MPLS Layer 3 VPN on a Cisco IOS-XE router. The engineer needs to configure the router to exchange VPNv4 routes with a route reflector. The router is already configured with BGP AS 65001 and has established an IBGP session with the route reflector. Which address family must be activated to support VPNv4 route exchange?

Question 236mediummultiple choice

A network engineer is troubleshooting a DMVPN Phase 3 network using Cisco IOS-XE routers. The hub router is configured with `ip nhrp redirect` and spoke routers with `ip nhrp shortcut`. A spoke router is unable to establish a direct spoke-to-spoke tunnel for a specific destination. Which action should the engineer take to resolve this?

Question 237hardmultiple choice

A network engineer is troubleshooting a Cisco IOS XE router that is configured with a route map for policy-based routing (PBR). The route map is applied to the ingress interface with `ip policy route-map PBR`. The engineer wants to verify that the PBR is matching traffic and setting the next-hop correctly. Which command provides the most detailed information about PBR matches and actions?

Question 238mediummultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 (10.1.1.1/24) and GigabitEthernet0/1 (10.2.2.1/24). The engineer wants traffic from the 10.1.1.0/24 subnet destined to 192.168.1.0/24 to be forwarded out GigabitEthernet0/1 instead of following the routing table, which points to GigabitEthernet0/0. Which configuration sequence correctly implements this requirement?

Question 239mediummultiple choice

A network engineer is configuring a Cisco IOS XE router to connect to an ISP via BGP. The engineer wants to influence inbound traffic from the ISP by prepending the router's AS number multiple times to the BGP updates sent to the ISP. Which BGP attribute should the engineer modify to achieve this?

Question 240mediummultiple choice

A network engineer is configuring EIGRP for IPv6 on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 (2001:DB8:1::1/64) and GigabitEthernet0/1 (2001:DB8:2::1/64). The engineer wants to enable EIGRP for IPv6 on both interfaces and ensure that the router forms adjacencies. Which configuration is required?

Question 241hardmulti select

A network engineer is troubleshooting an MPLS Layer 3 VPN on Cisco IOS XE routers. A customer edge (CE) router is not receiving routes from the provider edge (PE) router. The engineer suspects a VRF configuration issue. Which two commands should the engineer use to verify the VRF routing table and the BGP VPNv4 address family? (Choose two.)

Question 242mediummultiple choice

A network engineer is configuring policy-based routing (PBR) on a Cisco IOS XE router. The router has two interfaces: GigabitEthernet0/0 (LAN) and GigabitEthernet0/1 (WAN). The engineer wants all HTTP traffic from the 10.1.1.0/24 subnet to be routed via next-hop 192.168.2.2 instead of the default route. The engineer creates a route map named PBR with sequence 10, matches an ACL that permits TCP port 80 from 10.1.1.0/24, and sets the next-hop to 192.168.2.2. The route map is applied to interface GigabitEthernet0/0 with the command `ip policy route-map PBR`. However, traffic still follows the default route. Which action will fix the problem?

Question 243mediummultiple choice

A network engineer is troubleshooting a flapping OSPFv2 adjacency between two Cisco IOS-XE routers on a broadcast segment. The log shows repeated %OSPF-5-ADJCHG messages with reason 'Dead timer expired'. The engineer confirms that both routers are in Area 0, have identical hello/dead intervals, and are not configured with authentication. Which action most likely resolves the issue?

Question 244hardmultiple choice

Study the full multicast explanation →

A network engineer is configuring route redistribution between EIGRP and OSPF on a Cisco IOS-XE router. The engineer wants to prevent routing loops and ensure that only specific EIGRP routes are redistributed into OSPF. Which combination of tools should the engineer use?

Question 245mediummultiple choice

A network engineer is configuring a GRE tunnel between two Cisco IOS-XE routers to transport multicast traffic. The engineer notices that multicast packets are not being forwarded through the tunnel. Which action should the engineer take to enable multicast over the GRE tunnel?

Question 246mediummultiple choice

Read the full VRF explanation →

A network engineer is deploying DMVPN Phase 3 with OSPF over the tunnel interface. The hub router must summarize all spoke routes into a single /24 prefix before advertising them into the corporate OSPF domain. The engineer configures `area 0 range 10.10.0.0 255.255.255.0` on the hub's ABR. After applying the configuration, spoke routes are still advertised individually. Which action resolves the issue?

Question 247hardmultiple choice

A network engineer is configuring VRF-lite on a Cisco IOS router to segment traffic for two customers. The engineer creates VRF CUSTA and assigns interface GigabitEthernet0/1 to it. The engineer then configures a static route within VRF CUSTA to reach 10.10.10.0/24 via next-hop 192.168.1.1. However, the route does not appear in the VRF CUSTA routing table. Which command is missing?

Question 248mediummulti select

A network engineer is configuring EIGRP on a Cisco IOS XE router. The router is connected to two different autonomous systems: AS 100 and AS 200. The engineer wants to redistribute routes from AS 100 into AS 200. Which two statements are true regarding EIGRP redistribution? (Choose two.)

Question 249hardmultiple choice

A network engineer is implementing BGP on a Cisco IOS XE router. The router is peering with an ISP and receives a full BGP table. The engineer wants to influence inbound traffic from the ISP by making a specific prefix more preferred. The engineer has configured a route map that sets the MED to 50 for the prefix 203.0.113.0/24 and applies it outbound to the ISP. However, the ISP still prefers a different path. Which BGP attribute should the engineer manipulate to influence inbound traffic more effectively?

Question 250mediummultiple choice

A network engineer is configuring a GRE tunnel between two Cisco IOS XE routers, R1 and R2, to transport IPv6 traffic over an IPv4 network. The tunnel source is R1's GigabitEthernet0/0 interface (IPv4 address 10.1.1.1) and the tunnel destination is R2's GigabitEthernet0/0 interface (IPv4 address 10.2.2.2). The engineer configures the tunnel interface with IPv6 address 2001:DB8:1::1/64 and enables OSPFv3 on the tunnel interface. However, OSPFv3 adjacencies are not forming. What is the most likely cause?

Question 251mediummultiple choice

A network engineer is troubleshooting a dual-stack Cisco IOS XE router that runs OSPFv3 for IPv6 and OSPFv2 for IPv4. IPv4 adjacencies form and routes are exchanged, but no OSPFv3 adjacencies form and no IPv6 routes appear. The engineer verifies that the interfaces have IPv6 addresses and that `ipv6 unicast-routing` is enabled. Which configuration step is most likely missing?

Question 252mediummultiple choice

A network engineer is configuring BGP on a Cisco IOS XE router. The router has two eBGP peers: ISP-A and ISP-B. The engineer wants to influence outbound traffic so that the router prefers ISP-A for all destinations unless ISP-A fails. Which BGP attribute should the engineer manipulate, and how?

Question 253mediummultiple choice