Cisco
200-101 · Question #126
200-101 Question #126: Real Exam Question with Answer & Explanation
The correct answer is D. The gateway address of HostA is incorrect or not configured.. The exhibit shows HostA cannot reach any remote network, which points to a missing or misconfigured default gateway rather than a problem deeper in the path.
Troubleshoot Basic Connectivity
Question
Refer to the exhibit. A technician is testing connection problems in the internetwork. What is the problem indicated by the output from HostA?
Options
- AThe routing on Router2 is not functioning properly.
- BAn access list is applied to an interface of Router3.
- CThe Fa0/24 interface of Switch1 is down.
- DThe gateway address of HostA is incorrect or not configured.
Explanation
The exhibit shows HostA cannot reach any remote network, which points to a missing or misconfigured default gateway rather than a problem deeper in the path.
Common mistakes.
- A. If Router2 routing were the problem, HostA would receive ICMP time exceeded or unreachable messages from a reachable next-hop, not a local failure at the first hop.
- B. An ACL on Router3 would cause packets to be dropped deep in the path, producing timeouts or unreachable replies from Router3's address, not an immediate local error.
- C. If Fa0/24 on Switch1 were down, HostA would not have link and could not send any frames at all, but the exhibit implies HostA is able to generate the output, indicating its local interface is up.
Concept tested. Default gateway misconfiguration and host reachability
Reference. https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13788-3.html
Topics
#default gateway#ping troubleshooting#host configuration#ICMP
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