100-140 Question 228
Single answerA network technician is troubleshooting connectivity issues in an IPv6-enabled environment. They decide to use the ping6 command to test the reachability of a remote IPv6 address. Which of the following statements about the ping6 command is correct?
- A
The
ping6command only works on IPv4 networks. - B
The
ping6command sends ICMPv6 Echo Request messages to test connectivity. - C
The
ping6command requires administrative privileges to function. - D
The
ping6command tests DNS resolution for IPv6 addresses exclusively.
Show answer and explanation
Correct answer: B
Explanation
The ping6 command is a tool specifically designed to test connectivity in IPv6 networks. It operates by sending ICMPv6 Echo Request messages to a remote IPv6 address and waits for a corresponding Echo Reply. This command is critical when troubleshooting issues in IPv6-enabled environments, as it confirms whether a host is reachable over an IPv6 network.
- A. Incorrect.
Incorrect: The
ping6command is specific to IPv6 networks, not IPv4. For IPv4, thepingcommand is used. - B. Correct.
Correct: The
ping6command sends ICMPv6 (Internet Control Message Protocol for IPv6) Echo Request messages to verify the reachability of a target host in an IPv6 network. - C. Incorrect.
Incorrect: The
ping6command does not require administrative privileges to function. It can be executed by standard users. - D. Incorrect.
Incorrect: While the
ping6command can resolve IPv6-related DNS queries if provided with a hostname, its primary function is to test connectivity, not exclusively DNS resolution.