Question $1$: The class of the classful IP address $254\mathrm{.}34\mathrm{.}2\mathrm{.}8$ is

A$.$ A

B$.$ B

C$.$ C

D$.$ D

E$.$ E

Question $2$: NAT permanently assigns a set of private addresses to the host, but maps the private address to the global address when a host needs to use the Internet.

A$.$ True

B$.$ False

Question $3$: DHCP dynamically assigns one of the assigned addresses when a host needs to access the Internet.

A$.$ True

B$.$ False

Question $4$: In classless addressing, what is the value of the prefix length n if the size of the block N is $1024?$

A$.24$

B$.20$

C$.22$

D$.18$

Question $5$: Delays in a packet$-$switched network include

A$.$ transmission delay

B$.$ processing delay

C$.$ propagation delay

D$.$ queuing delay

Question $6$: