Exam XK0-004 topic 1 question 28 discussion

Actual exam question from CompTIA's XK0-004

Question #: 28
Topic #: 1

A junior Linux administrator is updating local name resolution to support IPv6. The administrator issues the command cat /etc/hosts and receives the following output:
127.0.0.1 localhost
Which of the following actions should the administrator perform to accomplish this task?

A. Modify the /etc/hosts file, and add the ipv6 localhost entry to the file.
B. Modify the /etc/hosts file, and add the ::1 localhost entry to the file.
C. Modify the /etc/hosts file, and add the ipv4 localhost entry to the file.
D. Modify the /etc/hosts file, and add the 0.0.0.0 localhost entry to the file.

Show Suggested Answer

Suggested Answer: B 🗳️

by bode at March 15, 2020, 5:01 p.m.

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bode

Highly Voted 5 years, 2 months ago

The answer is B ::1 is IPv6 equivalent of 127.0.0.1 in IPv4

upvoted 22 times

SoftwareEngineeringMaster

3 years ago

No way the answer B It is C….. I asked somebody expert with Linux and network

upvoted 1 times

Ya5

2 years, 11 months ago

take a deep breath

upvoted 2 times

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raquae

Highly Voted 4 years, 6 months ago

why are so many of the answers wrong? Who is really updating the answers? Too many of the questions' answers are wrong and misleading. Thank you exam prep for the questions, I really appreciate this however.

upvoted 12 times

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pinkcyberpenguin

Most Recent 5 years ago

The answer is B. http://man7.org/linux/man-pages/man5/hosts.5.html

upvoted 10 times

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