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Question 1

Which of the following commands is used to change options and positional parameters fora runningBash?

Options :

A : history

B : set

C : bashconf

D : setsh

E : envsetup

Answer: B

Question 2

What is true regarding TCP port 23?

Options :

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 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 connectto remote hosts.

Answer: B

Question 4

Which of the following files, located in the user home directory, is used to store the Bashhistory?

Options :

A : .bash_history

B : .bash_histfile

C : .history

D : .bashrc_history

E : .history_bash

Answer: A

Question 5

Which configuration file would be edited to change default options for the OpenSSHserver?

Options :

A : /etc/ssh/sshd_config

B : /etc/ssh/ssh

C : /etc/ssh/server

D : /etc/ssh/ssh_config

E : /etc/ssh/ssh_server

Answer: A