IP Connectivity

A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?

A router output shows this neighbor state: Neighbor ID 10.1.1.1 State FULL/DR Address 192.168.12.1 What does the FULL/DR state indicate?

A router learns 10.10.10.0/24 from OSPF and EIGRP at the same time. OSPF reports a metric of 20, and EIGRP reports a metric of 30720. Which route is installed in the routing table by default?

A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?

Which command correctly configures an IPv6 default route using next-hop address 2001:db8:1::1?

A routing table entry begins with the code C. What does that code indicate?

What problem is HSRP designed to solve?

What is the OSPF metric called?

Which Cisco IOS command configures a default static route pointing to next hop 203.0.113.1?

Why is RIP rarely chosen for large modern enterprise networks?

What metric does RIP use to choose the best path?

A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?

Which static route on R1 sends all unknown IPv4 destinations to next-hop address 192.0.2.1?

Which summary route best represents these four networks? 10.20.0.0/24 10.20.1.0/24 10.20.2.0/24 10.20.3.0/24

A router has these routes in its routing table: O 172.16.0.0/16 O 172.16.20.0/24 S 172.16.20.128/25 A packet destined for 172.16.20.200 arrives. Which route will the router use?

An engineer wants a static route to be used only if the OSPF route to the same network disappears. What should be configured?

What problem do first-hop redundancy protocols such as HSRP solve?

A router has routes for 10.10.0.0/16, 10.10.20.0/24, and a default route. Which route is used for destination 10.10.20.55?

Two OSPF routers connected over Ethernet fail to become neighbors. Their interfaces are up/up and in the same IPv4 subnet. One router uses area 0 and the other uses area 1 on the connecting interfaces. What is the most likely cause?

A static route is configured as 198.51.100.0/24 via 192.0.2.9, but the connected network to the next hop goes down. What happens to the static route in the routing table?

Which two statements about OSPF neighbor requirements on a shared Ethernet segment are correct? (Choose two.)

Two OSPF routers connected on an Ethernet link remain in the INIT state. Which issue is the most likely cause?

What is the effect of route summarization at an area boundary or redistribution point?

A router learns 203.0.113.0/24 through OSPF and 203.0.113.0/25 through a static route. Which route is used for traffic destined to 203.0.113.10?

Which OSPF network type on Ethernet performs a DR and BDR election by default?

A router shows the following route: O 10.10.40.0/24 [110/20] via 192.0.2.2, 00:00:12, GigabitEthernet0/0 What does the value 110 represent?

What is the purpose of a default route on a router?

A router shows the following routing table entries for the same destination: O 10.10.50.0/24 [110/20] via 192.168.12.2, GigabitEthernet0/0 D 10.10.50.0/24 [90/30720] via 192.168.13.2, GigabitEthernet0/1 Which route will become the active route in the routing table?

A router interface is configured for OSPF, but neighbors do not form. The engineer checks the interface and sees Hello 10 and Dead 40. The neighbor on the same segment uses Hello 30 and Dead 120. What is the most likely cause of the OSPF adjacency failure?

Match each routing term to its description.

A packet destined for 10.1.1.130 arrives at the router. Based on the routing table, which route will be used?

Match each wireless concept to its description.

R1 has the following static route configured: What does this route accomplish?

A network engineer enters the following commands on R1, but R1 does not form an OSPF adjacency with R2 on interface GigabitEthernet0/0. What is the most likely cause of the failure?

What is the main reason a default route is sometimes called a route of last resort?

Match each route type to its description.

A router has these routes installed. Which path will be chosen for traffic to 172.16.10.200?

R3 is not receiving the 10.20.30.0/24 network through OSPF. Based on the configuration, what is the most likely cause?

Which two statements accurately describe longest-prefix match in routing?

Why does a passive interface in OSPF still matter even though it does not send hello packets?

A router pair is directly connected, but they do not become OSPF neighbors. IP addressing and area assignment are correct. Based on the output, what is the most likely cause?

Match each OSPF adjacency requirement or concept to its most accurate description.

What is the main purpose of route summarization in a routed network?

A router has both an OSPF route and a static route to the same destination. The static route has an administrative distance of 200. What is the expected behavior while the OSPF route remains available?

What is the main reason route summarization can improve scalability in larger networks?

A route to 10.10.20.0/24 disappears when an OSPF adjacency fails. Which design would most directly provide an automatic backup without changing the primary OSPF path during normal operation?

Which statement best describes the role of a router’s routing table?

A router learns the same destination from EIGRP and OSPF. The EIGRP route has a metric of 1000, and the OSPF route has a metric of 10. Which route is installed by default?

A route to 192.168.1.0/24 appears in the routing table from OSPF, but a more specific static route to 192.168.1.128/25 is also configured. Which route is used for traffic to 192.168.1.200?

What is the main reason a router uses the default route only after checking for more specific routes first?

Which two statements accurately describe OSPF route selection or behavior at the CCNA level?

What is the main reason route administrative distance exists in Cisco routing logic?

Which two statements accurately describe default routes in a routed network?

Why is route summarization often useful at distribution or area boundaries in larger networks?

A router receives two routes to 10.50.0.0/16: one from OSPF and one static route with an administrative distance of 90. Which route is installed by default?

Match each routing term to its most accurate description.

Which statement best describes equal-cost multipath behavior in routing?

What is the main reason a more specific route usually overrides a less specific route, even when both point to valid destinations?

Which statement best explains why a router uses longest-prefix match before other route-comparison steps between matching routes?

Match each IPv4 route type to its most accurate source or description.

Which two statements accurately describe route summarization?

Two routers are in the same OSPF area and on the same subnet, but they do not form an adjacency. One interface uses a hello interval of 10 seconds and the other uses 5 seconds. What is the most likely cause?

An OSPF-enabled router has two paths to the same destination network, and both paths have the same OSPF cost. What is the most likely default behavior?

A static default route is configured with an administrative distance of 250. What is the most likely design intention?

What is the main operational value of a floating static route in a routed network?

A packet is destined for 192.168.40.130. The routing table contains 192.168.40.0/24, 192.168.40.128/25, and 0.0.0.0/0. Which route is used?

Match each route-selection concept to its most accurate meaning.

Which statement best describes the purpose of administrative distance when two different routing sources advertise the same prefix?

Which two statements accurately describe OSPF passive interfaces?

Two routers are directly connected over IPv6 and should form an OSPFv3 adjacency, but they do not. Link-local addressing is present on both interfaces. Which issue is most likely to prevent the adjacency?

What is the main operational purpose of a default route on an edge or branch router?

A router has a default route and a specific route to 203.0.113.0/24. Which route is used for traffic to 203.0.113.25?

Two routers are directly connected and running OSPF. Their IP addresses and hello timers match, but they still do not become neighbors. One side is configured for area 0 and the other for area 1 on the shared link. What is the most likely cause?

A routing table contains these entries for the same destination space: 10.1.0.0/16, 10.1.10.0/24, and 0.0.0.0/0. Which route is used for traffic to 10.1.10.44?

Match each route source or concept to its most accurate description.

A router learns 172.16.0.0/16 from OSPF and 172.16.10.0/24 from a static route. Which route is used for traffic to 172.16.10.55?

What is the main purpose of a floating static route in a network that already uses dynamic routing?

A router has routes to 192.168.0.0/16 and 192.168.100.0/24. Which route is used for traffic to 192.168.100.77?

Why is a default route often called a route of last resort?

Which two statements accurately describe longest-prefix match?

An engineer configures a floating static route to 0.0.0.0/0 with an administrative distance of 200 while OSPF is providing a default route. What is the intended behavior?

What is the main reason administrators use floating static routes in networks that already run dynamic routing protocols?

A router has a connected route to 192.168.1.0/24 and also has a default route. Which route is used for traffic to 192.168.1.55?

What is the main value of route summarization at a distribution layer or area boundary?

Match each routing concept to its most accurate description.

A network engineer configures OSPF between R1 and R2, but the routers never become neighbors on GigabitEthernet0/0. Based on the exhibit, what is the most likely cause?

A router has the following routes in its table: 172.16.0.0/16, 172.16.20.0/24, and 172.16.20.128/25. Which route is used for traffic to 172.16.20.200?

R1 and R2 are directly connected and running OSPF. They can ping each other, and the area assignment matches, but they still do not become neighbors. Based on the exhibit, what is the most likely cause?

What is the main operational benefit of summarizing multiple routes into one broader prefix where appropriate?

What is the main reason a default route is useful on a small branch router with a single upstream connection?

A router has a static route to 10.20.20.0/24 and also has a default route. Which route is used for traffic to 10.20.20.8?

Which two statements accurately describe passive interfaces in OSPF?

A router learns 10.0.0.0/8 from OSPF and 10.10.0.0/16 from a static route. Which route is used for traffic to 10.10.20.1?

R1 and R2 are directly connected and running OSPF. The IP addressing is correct and both routers are in area 0, but they do not form an adjacency. Based on the exhibit, what is the most likely cause?

A router has routes to 192.168.100.0/24 and 192.168.100.128/25. Which route is used for traffic to 192.168.100.140?

Match each route source or route type to its most accurate description.

What is the main operational purpose of a floating static route in a network that already uses dynamic routing?

Match each routing term to its most accurate meaning.

R1 and R2 are directly connected and running OSPF. They can ping each other, the area matches, and the timers match, but they still do not become neighbors. Based on the exhibit, what is the most likely cause?

What is the main operational benefit of route summarization at aggregation points in a larger network?

A router has routes to 172.20.0.0/16, 172.20.10.0/24, and 172.20.10.64/26. Which route is used for traffic to 172.20.10.70?

A router has a directly connected route to 10.1.1.0/24 and a static default route. Which route is used for traffic to 10.1.1.200?

A router has routes to 10.50.0.0/16, 10.50.10.0/24, and 10.50.10.128/25. Which route is used for traffic to 10.50.10.140?

A router has routes to 192.168.0.0/16 and 192.168.50.0/24. Which route is used for traffic to 192.168.50.99?

Why is a default route often described as a route of last resort?

R1 and R2 are directly connected and both configured for OSPF area 0. The IP addresses are correct, but the routers do not become neighbors. Based on the exhibit, what is the most likely cause?

What is the main operational benefit of route summarization where appropriate?

A router learns the same destination prefix from OSPF and from a static route configured with administrative distance 90. Which route is preferred by default?

What is the main operational reason a floating static route is assigned a higher administrative distance than the preferred route source?

Two directly connected routers running OSPFv3 do not form an adjacency. Both interfaces have valid IPv6 addresses and can ping each other using link-local addresses. Based on the exhibit, what is the most likely cause?

A router has a static default route with administrative distance 250 and also learns a default route through OSPF. What is the main design purpose of the static default route?

A router learns 192.168.30.0/24 from OSPF and also has a static route to 192.168.30.0/24 with administrative distance 200. Which route is installed in the routing table while both are available?

Match each IPv6 host-configuration concept to its most accurate description.

Which two statements accurately describe floating static routes?

A router receives a destination prefix from EIGRP with administrative distance 90 and also from OSPF with administrative distance 110. The prefix length is identical. Which route source is preferred?

An OSPF router learns a route with metric 20 and another OSPF route to the same destination with metric 30. The prefix length is the same. Which path is preferred?

Why is route summarization useful at a distribution layer or area boundary?

Match each routing concept to its most accurate meaning.

A route to 10.10.10.0/24 is learned through two OSPF paths. Both have the same prefix length and the same administrative distance, but one path has a lower OSPF metric. Which path is preferred?

A router learns the same destination prefix from OSPF and EIGRP. The prefix length is identical, and both routes are valid. Which route is preferred by default?

A router has an OSPF-learned route to a destination prefix and also a directly connected route to a broader supernet that includes that destination. The OSPF route is more specific. Which route is used for the destination?

Based on the exhibit, what is the main purpose of this configuration?

R1 is an IPv6-only branch router. The administrator wants all unknown IPv6 destinations to be sent to the upstream router at 2001:db8:ff::1. Which command best achieves that goal?

Which WAN technology is most closely associated with establishing a direct point-to-point data-link connection between two routers over a serial link?

Which statement best explains why BGP is discussed separately from interior routing protocols such as OSPF at a basic level?

Based on the exhibit, what is the operational purpose of the configured IPv6 route?

A company wants to connect two sites across an IP network by creating a logical tunnel between the edge routers. Which technology is most directly associated with that requirement?

Which statement best describes PPPoE at a basic CCNA level?

Match each WAN or interdomain concept to its most accurate description.

Which statement best describes BGP at a basic CCNA level?

Based on the exhibit, what is the main purpose of the configured tunnel?

What is an autonomous system in basic BGP terminology?

What is the main difference between administrative distance and metric in route selection?

Why is a default route useful on a small branch router connected to a single upstream provider?

Based on the exhibit, why is traffic to 198.51.100.64/26 using the OSPF route instead of the static route?

Which statement best describes why a static route can still be useful even in networks that also run dynamic routing protocols?

Which statement best describes why GRE is often mentioned together with VPN discussions but is not itself the same as encryption?

Which statement best explains why BGP path-vector behavior is often presented as different from OSPF link-state behavior?

A branch router uses PPP on a serial WAN link. Which additional PPP capability most directly improves access security on that link?

Based on the exhibit, why is traffic to 172.16.10.130 using the static route instead of the OSPF route?

Which statement best describes the difference between PAP and CHAP in PPP authentication at a basic level?

Which two statements accurately describe why BGP is often relevant at an Internet or multi-provider edge?

Match each WAN or edge concept to its most accurate description.

Based on the exhibit, which route will be used for destination 10.1.1.70?

Based on the exhibit, what is the most likely reason R1 and R2 are not forming an OSPF adjacency on GigabitEthernet0/0?

Based on the exhibit, which command is the best next step to verify whether R1 has formed an OSPF neighbor relationship?

Based on the exhibit, what is the most likely reason the PPP link is down?

Match each troubleshooting command focus to what it most directly helps verify.

Based on the exhibit, which route will be used to reach 172.20.10.33?

Based on the exhibit, what is the best explanation for why the router chooses the OSPF route to 10.50.0.0/16 instead of the RIP route?

Based on the exhibit, what is the most likely reason R1 is not forming an OSPF adjacency with R2?

Based on the exhibit, why is traffic to 192.168.40.200 using the default route instead of the intended static route?

Based on the exhibit, what is the most likely reason the PPP link is failing to authenticate?

Based on the exhibit, which command is the best next step to verify whether the floating static route becomes active after the primary route is lost?

Based on the exhibit, why is R1 not installing the floating static default route into the routing table?

Match each route-selection concept to the description that best fits it.

Based on the exhibit, why is traffic to 10.10.10.200 using the EIGRP route instead of the OSPF route?

Based on the exhibit, why is the static route to 10.200.0.0/16 present in the configuration but absent from the routing table?

Based on the exhibit, why is R1 not learning routes from R2 through OSPF on the shared link?

Based on the exhibit, why is the static route not being used for 172.18.9.10?

Based on the exhibit, which route will be used for destination 10.60.4.17?

Based on the exhibit, which route will the router use for destination 10.30.5.130?

Based on the exhibit, which route will be used for destination 192.168.10.130?

Based on the exhibit, why is traffic to 172.31.80.10 using the RIP route instead of the static route?

Based on the exhibit, what is the strongest reason the static route is preferred over the RIP route?

Based on the exhibit, why is R1 not forming an OSPF adjacency with R2 on the shared Ethernet segment?

When two routes to the same destination are learned by OSPF from different paths, what criterion does OSPF use to select the best path?

Exhibit: R2 has no route to 192.168.50.0/24 even though R1 advertises it in OSPF. Which issue in the exhibit best explains the problem?

Exhibit: R1 has the static route 'ip route 0.0.0.0 0.0.0.0 192.0.2.2 200' and also learns a default route from OSPF. Which default route will be installed while the OSPF route is present?

A branch router learns a route to 10.20.30.0/24 from OSPF with metric 30 and also has a static route to the same prefix with an administrative distance of 5. Which route will appear in the routing table?

Exhibit: R1 cannot form an OSPF adjacency with R2 on G0/0. What is the most likely cause?

Exhibit: R1 and R2 are directly connected. R1 does not show R2 as an OSPF neighbor. What is the most likely cause?

Exhibit: A router has routes to the same destination from two static routes. Which next hop is used?

Exhibit: R1 has a default route pointing to 10.1.1.2. Users lose internet access when that next hop fails, even though a floating static backup exists. Why is the backup not installed?

A router learns 172.16.40.0/24 from OSPF with AD 110 and metric 20. It also learns the same prefix from EIGRP with AD 90 and feasible distance 30720. Which route is installed?

Exhibit: R3 learns 10.50.0.0/16 by OSPF through two equal-cost paths. What will R3 do by default?

Exhibit: A static route was added, but traffic to 172.16.60.0/24 still fails. Which detail in the exhibit best explains why?

Exhibit: R1 cannot reach 192.168.50.0/24 even though OSPF is running between all routers. Which issue shown is the best explanation?

Exhibit: A router has the following routes. A packet is destined for 10.1.1.130. Which route is used?

Exhibit: R1 has a static default route to 192.0.2.2 and also learns a default route from OSPF. Which default route is installed in the routing table?

A router advertises its LAN network into OSPF, but no OSPF Hellos should be sent toward end-user devices on that LAN. Which configuration approach solves this cleanly?

Exhibit: On a broadcast multiaccess segment, R3 should become the OSPF DR, but it is staying DROTHER. Which explanation best fits OSPF behavior?

Exhibit: R1 is not forming an OSPF adjacency with R2 on GigabitEthernet0/1. Which mismatch below is the most likely cause?

Exhibit: OSPF neighbors are not reaching FULL state on an Ethernet segment with multiple routers. The output below is captured from R2. What is the most likely reason?

Exhibit: R1 has learned 10.50.0.0/24 through OSPF and also has a floating static route to the same prefix with administrative distance 130. Which route is installed while OSPF is healthy?

Exhibit: R3 has the static route shown below, but packets to 172.20.8.0/24 are being dropped. What is the most likely cause?

A network engineer wants a static route to be used only when the OSPF-learned route disappears. Which configuration approach meets that goal?

Exhibit: R1 shows an OSPF neighbor stuck in EXSTART with R2 on a serial link. What is the most likely cause?

Which OSPF component is used to identify routers uniquely inside an OSPF domain?

Exhibit: R1 has routes to 172.16.10.0/24 from multiple sources. Which route will be installed?

Exhibit: R1 learns 192.168.50.0/24 from multiple sources. Which two statements are correct about the route that will be installed in the routing table?

Exhibit: A router has both an OSPF-learned default route and a floating static default route. Which route is currently active?

Exhibit: R1 can ping 10.1.23.2 but cannot ping 192.168.3.10 behind R3. The routing table on R1 lacks 192.168.3.0/24. What is the best next check?

Exhibit: An ACL applied inbound on G0/0 is intended to block Telnet to 10.10.10.10 while permitting everything else, but users cannot reach any service on that server. Why?

Exhibit: An OSPFv2 adjacency between two routers on Ethernet is not forming. Which two mismatches would directly prevent the routers from becoming neighbors?

Exhibit: A static route to 172.16.40.0/24 is configured, but traffic still follows the default route. Which two explanations are plausible?

A router has learned route 172.16.50.0/24 from OSPF with cost 20 and also has a static route to the same prefix with administrative distance 5. Which two statements are correct about route selection?

A static default route is configured on R1 toward ISP-A, and a second default route toward ISP-B is configured with a higher administrative distance. Which two statements are correct during normal operation and after ISP-A failure?

A network engineer needs a floating static route to back up an OSPF-learned route. Which two configurations are necessary for the static route to remain unused until OSPF fails?

A branch router is running single-area OSPF. An engineer wants an interface to advertise its connected network into OSPF but must prevent hello packets from being sent on that LAN segment. Which two actions achieve that goal?

A route table shows both a default route and a more specific route to 192.168.50.0/24. Which two statements describe how packets destined for 192.168.50.25 are handled?