200-301 Question #381: Real Exam Question with Answer & Explanation

The correct answer is D: sends a broadcast message in an attempt to resolve the URL. When a router with default DNS lookup settings encounters a URL on the CLI and no DNS server is explicitly configured, it attempts to resolve the hostname.

Submitted by salim_om· Mar 5, 2026DOMAIN_LIST_MISSING

Question

What does a router do when configured with the default DNS lookup settings, and a URL is entered on the CLI?

Options

Ainitiates a ping request to the URL
Bprompts the user to specify the desired IP address
Ccontinuously attempts to resolve the URL until the command is cancelled
Dsends a broadcast message in an attempt to resolve the URL

Explanation

When a router with default DNS lookup settings encounters a URL on the CLI and no DNS server is explicitly configured, it attempts to resolve the hostname.

Common mistakes.

A. Initiating a ping request requires a resolved IP address first; a ping is a connectivity test, not a name resolution method.
B. The router does not prompt the user for an IP address; it automatically attempts to resolve the name based on its configuration.
C. Without a configured DNS server, the default broadcast attempt will typically time out after a few tries rather than continuously attempting until cancelled.

Concept tested. Cisco router default DNS lookup behavior

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dns/configuration/15-mt/dns-15-mt-book/iadns-cfg-dns.html

Topics

#Router CLI#DNS resolution#Default router settings

Community Discussion

No community discussion yet for this question.

Full 200-301 Practice Browse All 200-301 Questions