Chapter 3

Question 1

Which file defines local hostname to IP address translations?

Answer 1

/etc/hosts

Question 2

What daemon process on a standard Red Hat Enterprise Linux system is responsible for resolving a hostname into an IP address?

Answer 2

The question is misguided, as local hostname resolution is not implemented as a daemon.

Question 3

What network protocol is used to resolve hostnames into IP addresses?

Answer 3

DNS

Question 4

What keyword is used to assign nameservers in the /etc/resolv.conf file?

Answer 4

nameserver

Question 5

What keyword is used to define domains to possibly append to non-fully-qualified hostnames?

Answer 5

search

Question 6

After editing the /etc/resolv.conf configuration file, what command must be run before the edits take effect?

Answer 6

None, as the changes take effect immediately.

Question 7

After editing the /etc/hosts configuration file, what command must be run before the edits take effect?

Answer 7

None, as the changes take effect immediately.

Question 8

No /etc/hosts or /etc/resolv.conf file can be found on a Red Hat Enterprise Linux machine, and yet the web browser is able to access websites by hostname. Which of the following is the most likely explanation?

Answer 8

The web browser is accessing the Internet through a remote proxy server.