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What argument to the -type option of find will match files that are symbolic links? (Specify only the argument and no other options or words.)

1. A.

Correct Answer: l

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How many IP-addresses can be used for unique hosts inside the IPv4 subnet
192.168.2.128/28? (Specify the number only without any additional information.)

1. A.

Correct Answer: 14

Which command will display the last line of the file foo.txt?

1. A. head -n 1 foo.txt
2. B. tail foo.txt
3. C. last -n 1 foo.txt
4. D. tail -n 1 foo.txt

Correct Answer: D

Which of the following commands is used to update the list of available packages when using dpkg based package management?

1. A. apt-get update
2. B. apt-get upgrade
3. C. apt-cache update
4. D. apt-get refresh
5. E. apt-cache upgrade

Correct Answer: A

Which of the following settingsfor umask ensures that new files have the default permissions -rw-r----- ?

1. A. 0017
2. B. 0640
3. C. 0038
4. D. 0027

Correct Answer: D