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200-301 Router R1 Cannot Reach R3 Practice Questions

Practise routing and connectivity troubleshooting scenarios involving R1, R2, R3, static routes, OSPF, next hops and routing tables.

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Common Traps on Router R1 Cannot Reach R3 Practice Questions

  • ·Check both forward and return paths.
  • ·A correct-looking route can still fail if the next hop is unreachable.
  • ·Administrative distance and longest-prefix match can change which route is used.

Sample Questions

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1.

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

Explanation: When identical prefixes are learned from different routing protocols, the router compares administrative distance first. EIGRP internal routes use AD 90, while OSPF uses AD 110.

2.

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?

Explanation: On broadcast OSPF networks, full adjacency is typically formed with the DR and BDR. DROTHER routers can remain in the 2-Way state with one another and still be operating normally.

3.

What is the OSPF metric called?

Explanation: OSPF uses cost as its internal metric. By default, cost is derived primarily from bandwidth.

4.

A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?

Explanation: ACLs are processed top down. Line 10 denies TCP destination port 80, which blocks HTTP. Line 20 then permits all remaining IP traffic, including ICMP echo packets used by ping.

5.

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?

Explanation: The route with the lower administrative distance is installed. A static route configured with a higher AD becomes a floating static route and remains as a backup until the preferred route disappears.

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Related Topics

show ip routeospf practice questionsstatic routing

Frequently asked questions

How do "Router R1 Cannot Reach R3 Practice Questions" appear on the real 200-301?

Practise routing and connectivity troubleshooting scenarios involving R1, R2, R3, static routes, OSPF, next hops and routing tables. These appear throughout the 200-301 and require you to apply your knowledge, not just recall facts.

How many scenario questions are on the 200-301 exam?

Cisco doesn't publish an exact breakdown, but scenario-based questions (especially exhibit and command-output formats) make up a significant portion of the 200-301. Practicing each scenario type ensures you're ready for any format.

Are these 200-301 scenario practice questions free?

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