Question 1

Why is /etc/shadow not world readable if the passwords are stored in an encrypted fashion?

Options :

A : The encrypted passwords are still subject to brute force attacks.

B : This is just for historical reasons.

C : There is other information in the file that needs to be kept secret.

D : The passwords can be decrypted by anyone with root access.

Answer: A

Question 2

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 3

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 4

What is true regarding a default route?

Options :

A :

The default route is always used first. When the default route is not available more specific routes are tried.

B : When a default route is set, all other routes are disabled until the default route is deleted.

C : The default route is only used if there is not a more specific route to a destination host or network.

D :

Without a default route, no network communication even in directly attached networks is possible.

Answer: C

Question 5

Which of the following SQL statements will select the fields name and address from the contacts table?

Options :

A : SELECT (name, address) FROM contacts;

B : SELECT (name address) FROM contacts;

C : SELECT name, address FROM contacts;

D : SELECT name address FROM contacts;

Answer: C