Practice Questions

Question 1 Which of the following commands use the remote authentication database to validate users? (Select all that apply.)
  • a. telnet

  • b. rlogin

  • c. rcp

  • d. ftp

  • e. rsh

A1: Answers b, c, and e are correct. The r commands (rlogin, rcp, and rsh) use the remote authentication database. The telnet and ftp commands use only the Unix account name and password for authentication. Therefore, answers a and d are incorrect.
Question 2 Which mkdir command-line argument creates any parent directories as needed?
  • a. -P

  • b. -c

  • c. -p

  • d. -m

A2: Answer c is correct. The -p command-line argument of mkdir will create any parent directories as needed. -P, -c, and -m are not valid command-line arguments for the mkdir command. Therefore, answers a, b, and d ...

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