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Show IP Route Output Practice Questions

Practise ENCOR 350-401 practice questions — original exam-style scenarios covering every exam domain, with detailed explanations, wrong-answer analysis, and common exam traps.

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350-401
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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 1hardmultiple choice
Study the full EIGRP explanation →

Refer to the exhibit. A network engineer is troubleshooting a routing issue. The route for 10.0.0.0/8 is learned via EIGRP with metric 2560512. Which change would most likely cause the metric to increase?

Exhibit

Refer to the exhibit.
```
router# show ip route 10.0.0.0
Routing entry for 10.0.0.0/8
  Known via "eigrp 100", distance 170, metric 2560512, type internal
  Redistributing via eigrp 100
  Last update from 192.168.1.1 on GigabitEthernet0/0, 00:00:05 ago
  Routing Descriptor Blocks:
  * 192.168.1.1, from 192.168.1.1, 00:00:05 ago, via GigabitEthernet0/0
      Route metric is 2560512, traffic share count is 1
      Total delay is 2000 microseconds, minimum bandwidth is 10000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 3
```
Question 2hardmultiple choice
Review the full OSPF breakdown →

Refer to the exhibit. R1 has two equal-cost OSPF E2 routes to 10.1.1.0/24 via two different next hops. However, when tracing to 10.1.1.1, all traffic uses the path through 10.0.1.2. What is the most likely reason?

Exhibit

Refer to the exhibit.
R1# show ip route | include 10.1.1.0
O E2 10.1.1.0/24 [110/20] via 10.0.1.2, 00:00:34, GigabitEthernet0/0
O E2 10.1.1.0/24 [110/20] via 10.0.2.2, 00:00:34, GigabitEthernet0/1
R1# show ip ospf interface GigabitEthernet0/0 | include Cost
  Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 10
R1# show ip ospf interface GigabitEthernet0/1 | include Cost
  Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 100
R1# traceroute 10.1.1.1 source Loopback0
Type escape sequence to abort.
Tracing the route to 10.1.1.1
  1 10.0.1.2 4 msec 4 msec 4 msec
  2 10.0.3.2 8 msec 8 msec 8 msec
Question 3easymultiple choice
Review the full OSPF breakdown →

Refer to the exhibit. An administrator needs to ensure that traffic to 192.168.1.0/24 is forwarded via a different path than traffic to 192.168.2.0/24, even though both routes are learned via OSPF with the same metric. Which action should the administrator take?

Exhibit

Refer to the exhibit.

R1# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override

Gateway of last resort is 10.0.0.2 to network 0.0.0.0

O E2     192.168.1.0/24 [110/20] via 10.0.0.2, 00:00:34, GigabitEthernet0/0
O E2     192.168.2.0/24 [110/20] via 10.0.0.2, 00:00:34, GigabitEthernet0/0
S*       0.0.0.0/0 [1/0] via 10.0.0.1
Question 4mediummultiple choice
Review the full OSPF breakdown →
Router R3 has the following OSPF configuration:

router ospf 1

router-id 3.3.3.3

network 10.0.0.0 0.255.255.255 area 0

default-information originate always metric 20 metric-type 2

What is the effect of the 'default-information originate always' command?

Question 5hardmultiple choice
Study the full EIGRP explanation →

A network engineer is configuring EIGRP on a router that connects to a service provider network. The engineer wants to advertise a default route to internal routers. The engineer configures 'ip default-network 0.0.0.0' and redistributes a static default route into EIGRP. However, internal routers are not receiving the default route. The engineer checks the EIGRP topology table and sees the default route with a metric of 1. What is the most likely reason?

Question 6mediummultiple choice
Read the full NAT/PAT explanation →

A network engineer is designing a campus network with high availability for critical services. Which Cisco technology enables traffic to be forwarded to an alternate next hop in the event of a first-hop router failure, without requiring any configuration changes on the hosts?

Question 7mediummultiple choice
Review the full OSPF breakdown →

An engineer is troubleshooting an MPLS VPN where CE1 (10.1.1.0/24) cannot reach CE2 (10.2.2.0/24). The PE routers are running OSPF with the CE routers. On PE1, the 'show ip route vrf CUSTOMER' output shows 10.2.2.0/24 as an OSPF route, but the prefix is not present in the global BGP table. What is the most likely cause?

Question 8hardmultiple choice
Read the full MPLS explanation →

A network engineer runs the following command on Router R2:

R2# show mpls forwarding-table

Local Outgoing Prefix Bytes Label Outgoing Next Hop Label Label or Tunnel Id Switched interface 16 Pop Label 10.1.1.1/32 0 Gi0/0 192.168.1.1 17 18 10.2.2.0/24 1500 Gi0/1 192.168.2.3 18 Untagged 10.3.3.0/24 0 Gi0/2 192.168.3.4

Based on this output, what is the correct interpretation?

Question 9easymultiple choice
Review the full routing breakdown →

A network engineer is configuring a PPPoE client on a Cisco router for a DSL connection. The engineer configures the dialer interface with the correct PPPoE profile and authentication credentials. The PPPoE session establishes, but the router cannot ping the ISP's gateway IP address. The engineer checks the routing table and sees that a default route is present via the dialer interface. What is the most likely cause?

Question 10mediummultiple choice
Open the full BGP breakdown →

A network engineer issues the following command on Router R3:

R3# show ip bgp summary

BGP router identifier 10.0.0.3, local AS number 65003 BGP table version is 12345, main routing table version 12345

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
192.168.1.1     4        65001   12345   12345    12345    0    0 1w2d        150
192.168.1.2     4        65002   12345   12345    12345    0    0 2w0d        200

Based on this output, what can be concluded?

Question 11mediummultiple choice
Open the full BGP breakdown →

A network engineer runs the following command on Router R1:

R1# show ip route 10.1.1.0

Routing entry for 10.1.1.0/24 Known via "bgp 65001", distance 200, metric 0 Tag 65002, type external Last update from 192.168.1.2 00:00:15 ago Routing Descriptor Blocks:

* 192.168.1.2, from 192.168.1.2, 00:00:15 ago

Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65002 MPLS label: 18

Based on this output, what can be concluded?

Question 12mediummultiple choice
Review the full OSPF breakdown →

A network engineer is deploying IP multicast in an OSPF-based enterprise network. The network uses PIM sparse mode with a static RP. The engineer notices that multicast traffic from a source to a group is not reaching receivers in a remote subnet, even though the RP is reachable and the receivers have sent IGMP joins. The engineer checks the multicast routing table on the last-hop router and sees that the (S,G) entry is present, but the outgoing interface list (OIL) is empty. What is the most likely reason for the empty OIL?

Question 13mediummultiple choice
Study the full multicast explanation →

An engineer is troubleshooting multicast performance issues. The network uses PIM sparse mode with a static RP. The engineer notices that the multicast traffic from a source to a group is taking a suboptimal path, causing high latency. The engineer checks the multicast routing table on the last-hop router and sees that the (S,G) entry has an incoming interface that is not the shortest path to the source. What is the most likely reason for this suboptimal path?

Question 14mediummultiple choice
Study the full multicast explanation →

A network engineer issues the following command on Router R2:

R2# show ip mroute 239.1.1.1
IP Multicast Routing Table

Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet, X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement, U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel, z - MDT-data group session, Y - Joined MDT-data group, y - Sending to MDT-data group Outgoing interface flags: H - Hardware switched, A - Assert winner Timers: Uptime/Expires

Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.1.1.1), 00:03:45/00:02:15, RP 10.0.0.1, flags: S Incoming interface: GigabitEthernet0/0, RPF nbr 10.0.0.1 Outgoing interface list: GigabitEthernet0/1, Forward/Sparse, 00:03:45/00:02:15

Based on this output, what can be concluded?

Question 15hardmultiple choice
Open the full BGP breakdown →

A network engineer runs the following command on Router R2:

R2# show ip bgp summary

BGP router identifier 10.0.0.2, local AS number 65002 BGP table version is 10, main routing table version 10 4 network entries using 576 bytes of memory 4 path entries using 320 bytes of memory 3/2 BGP path/bestpath attribute entries using 456 bytes of memory 1 BGP AS-PATH entries using 24 bytes of memory 0 BGP route-map cache entries using 0 bytes of memory 0 BGP filter-list cache entries using 0 bytes of memory BGP using 1376 total bytes of memory BGP activity 6/2 prefixes, 6/2 paths, scan interval 60 secs

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
192.168.1.1     4        65001    1024    1020       10    0    0 02:15:30        3
192.168.1.3     4        65003       0       0        0    0    0 00:00:12   Idle (Admin)

Based on this output, what can be concluded?

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