题目内容

Encrypted account passwords are found in the file _________ and are typically encrypted using the _________ algorithm.

A. /etc/passwd; SHA-512
B. /etc/password; SSH-512
C. /etc/shadow; SHA-512
D. /etc/shadow; HASH-256

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The command-mode key stroke _______ within vi will delete the characters from the cursor to the end of the word.

A. D
B. dw
C. d$
D. rl

An easy to use text-based editor that utilizes on-screen prompts is:

A. edit
B. cat
C. edln
D. nano

Which command is used to set the Linux file permissions to make the file named "data", readable and writable by the owner and group owner of the file, but not accessible by any others?

A. chown 660 data
B. chmod 660 data
C. chgrp 670 data
D. chmod 777 data

The _________ environment variable lists the directories in which the shell looks for executable programs and scripts.

A. $PATH
B. $HOME
C. $PS1
D. $SHELL

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