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Show IP Route Output Practice Questions

Practise Cisco CCNP ENARSI 300-410 practice questions — original exam-style scenarios covering every exam domain, with detailed explanations, wrong-answer analysis, and common exam traps.

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300-410
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Cisco
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Scenario guide

How to approach show ip route output practice questions

Practise interpreting routing-table output, route selection, administrative distance, metrics, next hops and longest-prefix match.

Quick answer

Show IP Route Output Practice Questions questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

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Practice set

Practice scenarios

Question 1mediummultiple choice
Open the full BGP breakdown →

A network engineer runs the following command to troubleshoot a Control Plane Policing (CoPP) issue:

R1# show bgp neighbors 10.1.1.2 received-routes

BGP table version is 10, local router ID is 10.1.1.1 Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, r RIB-failure, S stale, m multipath, b backup-path, f RT-Filter, x best-external, a additional-path, c RIB-compressed, Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path *> 10.3.3.0/24 10.1.1.2 0 100 0 i

Total number of prefixes 1

What does this output indicate?

Question 2hardmultiple choice
Review the full routing breakdown →

An engineer configures unicast Reverse Path Forwarding (uRPF) in strict mode on an interface connected to a customer network. The customer has a default route pointing to the router. After enabling uRPF, the router drops traffic from the customer that has a source IP address that is not in the routing table as a directly connected or static route. What is the most likely explanation?

Question 3hardmultiple choice
Review the full OSPF breakdown →

An engineer configures mutual redistribution between OSPF and EIGRP on a router. Both protocols have routes for the same prefix. The engineer also applies an inbound ACL on the OSPF interface to deny certain routes from being learned via OSPF. After the ACL is applied, the router still has the prefix in the routing table, but it is learned via EIGRP instead of OSPF. What is the most likely explanation?

Question 4mediummultiple choice
Study the full EIGRP explanation →

A network engineer is troubleshooting an IPv6 connectivity issue on a router that is receiving routes via EIGRP for IPv6. The engineer notices that some routes are not being installed in the routing table, even though the EIGRP neighbor relationship is established. The engineer checks the interface configuration and finds an inbound IPv6 ACL that permits only certain EIGRP packets. The ACL permits EIGRP hello packets and updates, but not EIGRP queries or replies. What is the most likely cause of the missing routes?

Question 5hardmultiple choice
Read the full VPN explanation →

An engineer is troubleshooting a DMVPN phase 3 network where spoke-to-spoke tunnels are established, but traffic between spokes is taking a suboptimal path through the hub. The engineer checks 'show ip nhrp shortcut' on the spoke and sees no shortcut entries. The hub has 'ip nhrp redirect' enabled, and the spoke has 'ip nhrp shortcut' enabled. The engineer also verifies that the spoke's routing table has a route to the remote spoke's LAN via the hub. What is the most likely cause?

Question 6hardmultiple choice
Review the full OSPF breakdown →

An engineer redistributes OSPF routes into EIGRP. The OSPF routes have a metric of 20. After redistribution, the EIGRP topology table shows the routes but they are not installed in the routing table. The 'show ip eigrp topology' shows the route in active state. Which is the most likely explanation?

Question 7mediummultiple choice
Study the full EIGRP explanation →

What is the default EIGRP composite metric formula used for route calculation?

Question 8hardmultiple choice
Review the full OSPF breakdown →

A network engineer notices that routes redistributed from EIGRP into OSPF are causing routing loops. Router R1 has the following relevant configuration: router eigrp 100 redistribute ospf 1 metric 10000 100 255 1 1500 router ospf 1 redistribute eigrp 100 subnets metric-type 1 Router R2 shows: show ip route 192.168.1.0 Routing entry for 192.168.1.0/24 Known via "ospf 1", distance 110, metric 20, type E1 Last update from 10.1.1.1, 00:01:30 ago Also, R2 has a default route via R1. What is the root cause?

Question 9mediummultiple choice
Study the full ACL explanation →

A network engineer is troubleshooting PBR on a Cisco router where traffic from subnet 10.1.1.0/24 should be forwarded to next-hop 192.168.1.2. The route map 'PBR-10' is configured with 'match ip address 150' and 'set ip next-hop 192.168.1.2'. The engineer applies the route map to interface GigabitEthernet0/0. The engineer notices that PBR is not working, and the router is using the routing table to forward traffic. The engineer checks the ACL 150 and confirms it matches 10.1.1.0/24. The engineer also checks the interface configuration and sees 'ip policy route-map PBR-10' applied. What is the most likely cause?

Question 10hardmultiple choice
Open the full BGP breakdown →

A network engineer runs the following command to troubleshoot a BGP Troubleshooting issue:

R1# show bgp ipv4 unicast 192.168.1.0/24

BGP routing table entry for 192.168.1.0/24, version 12 Paths: (2 available, best #2, table default) Advertised to update-groups: 1 Refresh Epoch 1 65001

10.1.1.2 from 10.1.1.2 (10.1.1.2)

Origin IGP, metric 0, localpref 100, valid, external Refresh Epoch 2 65002

10.2.2.2 from 10.2.2.2 (10.2.2.2)

Origin IGP, metric 0, localpref 100, valid, external, best

What does this output indicate?

Question 11hardmultiple choice
Open the full BGP breakdown →

A network engineer runs the following command to troubleshoot an MPLS L3VPN issue:

R1# show bgp vpnv4 vrf CUSTOMER-A 10.1.1.0/24

Output: BGP routing table entry for 10.1.1.0/24, version 10 Paths: (1 available, best #1, table CUSTOMER-A) Advertised to update-groups: 1 Refresh Epoch 1 Local

0.0.0.0 from 0.0.0.0 (10.0.0.1)

Origin incomplete, metric 0, localpref 100, weight 32768, valid, sourced, best Extended Community: RT:100:100 mpls labels in/out nolabel/nolabel

What does this output indicate?

Question 12hardmultiple choice
Read the full VRF explanation →

Two VRFs on router R1: VRF A and VRF B. R1 has:

ip vrf A

rd 100:1 route-target export 100:1 route-target import 100:2

ip vrf B

rd 100:2 route-target export 100:2 route-target import 100:1 R1 shows:

R1# show ip route vrf A
B       10.1.1.0/24 [200/0] via 10.2.2.2, 00:00:10
R1# show ip route vrf B
B       10.1.1.0/24 [200/0] via 10.2.2.2, 00:00:10
Router R2 (in VRF A) can ping 10.1.1.1, but router R3 (in VRF B) cannot. What is the root cause?
Question 13mediummultiple choice
Review the full OSPF breakdown →

A network engineer runs the following command on Router R1:

R1# show ip route 192.168.1.0

Routing entry for 192.168.1.0/24 Known via "ospf 1", distance 110, metric 20, type extern 2, forward metric 100 Redistributing via ospf 1 Last update from 10.1.1.2 on GigabitEthernet0/1, 00:00:05 ago Routing Descriptor Blocks:

* 10.1.1.2, from 10.1.1.2, 00:00:05 ago, via GigabitEthernet0/1

Route metric is 20, traffic share count is 1

Based on this output, what is the problem?

Question 14hardmultiple choice
Review the full OSPF breakdown →

OSPF network type mismatch on a multi-access link is causing route summarization issues. Router R1 and R2 are connected via Ethernet, but R1 has:

interface GigabitEthernet0/0
 ip address 10.0.0.1 255.255.255.0
 ip ospf network point-to-point
 ip ospf 1 area 0

!

Router R2 has default OSPF network type (broadcast). R1 is configured with:
router ospf 1
 area 0 range 10.0.0.0 255.255.255.0

! R2 shows:

R2# show ip ospf neighbor
Neighbor ID     Pri   State           Dead Time   Address         Interface
10.0.0.1          0   FULL/  -        00:00:30    10.0.0.1        GigabitEthernet0/0

But R2 does not have the summary route in its routing table. What is the root cause?

Question 15mediummultiple choice
Open the full BGP breakdown →

A network engineer runs the following command on Router R1:

R1# show ip bgp 10.1.1.0/24

BGP routing table entry for 10.1.1.0/24, version 10 Paths: (1 available, best #1, table default) Advertised to update-groups: 1 Refresh Epoch 1 Local

10.2.2.2 from 10.2.2.2 (2.2.2.2)

Origin IGP, metric 0, localpref 100, valid, external, best rx pathid: 0, tx pathid: 0x0 Community: 100:200

Based on this output, what is the problem?

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