Which grep command will print only the lines that do not end with a / in the file foo?

1. A. grep '/$' foo
2. B. grep '/#' foo
3. C. grep -v '/$' foo
4. D. grep -v '/#' foo

Correct Answer: C

CORRECT TEXT
What two character sequence is present at the beginning of an interpreted script? (Please specify the TWO correct characters only)

1. A.

Correct Answer: #!

What is true regarding TCP port 23?

1. A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.
2. B. Port 23 is the well known port for the SSH service which provides secure logins.
3. C. Port 23 is the well known port for the rlogin service which is SSL secured by default.
4. D. Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

Correct Answer: A

CORRECT TEXT
Which Debian package management tool asks the configuration questions for a specific already installed package just as if the package were being installed for the first time? (Specify ONLY the command without any path or parameters.)

1. A.

Correct Answer: dpkg-reconfigure

Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

1. A. shutdown -r now
2. B. shutdown -r "rebooting"
3. C. telinit 6
4. D. telinit 0
5. E. shutdown -k now "rebooting"

Correct Answer: AC