Question 1

Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)

Options :

A : 127.0.0.0/8

B : 10.0.0.0/8

C : 169.255.0.0/16

D : 172.16.0.0/12

E : 192.168.0.0/16

Answer: B,D,E

Question 2

The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?

Options :

A : It is placed in curly brackets as in Section SectionName { ... }.

B : It is placed between a line containing Section 'SectionName' and a line containing EndSection.

C : It is placed between the tags < Section name="SectionName" > and < /Section >

D : It is placed after the row [SectionName].

E : It is placed after an initial unindented Section 'SectionName' and must be indented by exactly onetab character.

Answer: B

Question 3

What is a purpose of an SSH host key?

Options :

A : It must be sent by any SSH client in addition to a user key in order to identify the client-s host.

B : It provides the server-s identity information to connecting SSH clients.

C : It is the root key by which all user SSH keys must be signed.

D : It authenticates any user that logs into a remote machine from the key-s host.

E : It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.

Answer: B

Question 4

Which of the following commands puts the output of the command date into the shell variable mydate?

Options :

A : mydate="$(date)"

B : mydate="exec date"

C : mydate="$((date))"

D : mydate="date"

E : mydate="${date}"

Answer: A

Question 5

What is true about the ntpdate command?

Options :

A : It is the primary management command for the NTP time server.

B : It updates the local system-s date (i.e. day, month and year) but not the time (i.e. hours, minutes,seconds).

C : It queries one or more NTP time servers and adjusts the system time accordingly

D : It sends the local system time to one or many remote NTP time servers for redistribution.

E : It can be used by any user to set the user clock independently of the system clock.

Answer: C

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