102-400 | A Review Of Real 102-400 examcollection

Question No: 1

Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)

A. substitute

B. nameserver

C. search

D. lookup

E. method

Answer: B,C

Question No: 2

Which of the following commands can remove a user from a group?

A. grouprm

B. groupmod

C. passwd

D. usergroups

E. usermod

Answer: E

Question No: 3

What is true regarding TCP port 23?

A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

B. Port 23 is the well known port for the SSH service which provides secure logins.

C. Port 23 is the well known port for the rlogin service which is SSL secured by default.

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.

Answer: A

Question No: 4

What output will the following command sequence produce?

echo '1 2 3 4 5 6' | while read a b c; do echo result: $c $b $a;

done

A. result: 3 4 5 6 2 1

B. result: 1 2 3 4 5 6

C. result: 6 5 4

D. result: 6 5 4 3 2 1

E. result: 3 2 1

Answer: A

Question No: 5

What entry can be added to the syslog.conf file to have all syslog messages generated by a system displayed on console 12?

A. *.* /dev/tty12

B. /var/log/messages | /dev/tty12

C. | /dev/tty12

D. syslog tty12

E. mail.* /dev/tty12

Answer: A

Question No: 6

CORRECT TEXTWhich keyword must be listed in the hosts option of the Name Service Switch configuration file in order to make host lookups consult the /etc/hosts file?

Answer: files

Question No: 7

CORRECT TEXTHow 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.)

Answer: 14

Question No: 8

Which of the following are requirements in order to run a shell script like a regular command from anywhere in the filesystem? (Choose THREE correct answers.)

A. The user issuing the command must be in the group script.

B. The script file must be found in the $PATH.

C. The script file must have the executable permission bit set.

D. The script must begin with a shebang-line (#!) that points to the correct interpreter.

E. The file system on which the script resides must be mounted with the option scripts.

Answer: B,C,D

Question No: 9

Which of the following commands lists all defined variables and functions within Bash?

A. env

B. set

C. env -a

D. echo $ENV

Answer: B

Question No: 10

CORRECT TEXTWith IPv6, how many bits have been used for the interface identifier of an unicast address? (Specify the number using digits only.)

Answer: 64