102-400 Online Practice Questions and Answers

Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

In an xinetd configuration file, which attribute specifies the network address that will be used to provide the service?

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

What output will the following command produce?

seq 1 5 20

A. 1

B. 1

C. 1

D. 2

E. 5

Which of the following details is NOT provided in any output from the netstat utility?

A. broadcast services

B. interface statistics

C. masquerading connections

D. network connections

E. routing tables

What is true regarding a default route?

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.

What of the following can be done by the command ifconfig? (Choose TWO correct answers.)

A. Set a network interface active or inactive.

B. Specify the kernel module to be used with a network interface.

C. Allow regular users to change the network configuration of a network interface.

D. Change the netmask used on a network interface.

E. Specify which network services are available on a network interface.

Which of the following commands can be used to limit the amount of memory a user may use?

A. umask

B. usermod

C. ulimit

D. passwd

E. chage