QUESTION $29$

The IP address $223\mathrm{.}23\mathrm{.}17\mathrm{.}1$ may belong to which of the following subnet?

A$.$ The subnet $223*23*\frac{16\mathrm{.}0}{23}$

B$.$ The subnet $223\mathrm{.}23.\frac{17\mathrm{.}0}{24}$

C$.$ The subnet $223\mathrm{.}23.\frac{0\mathrm{.}0}{19}$

D$.$ All of the above

QUESTION $30$

During a host newly joins a subnet, which of the following information can be obtained from DHCP$?$

A$.$ Host IP address

B$.$ Address of first$-$hop router for the host

C$.$ name and IP address of DNS server

D$.$ All of the above

QUESTION $31$

In DHCP$,$ which of the following two steps can be optional?

A$.$ Host broadcasts $"$DHCP discover" msg and DHCP server sends address by $"$DHCP ack" msg

B$.$ Host broadcasts $"$DHCP discover" msg and DHCP server responds with $"$DHCP offer" $msg$

C$.$ Host requests IP address by $"$DHCP request' $msg$ and $DHCP$ server responds with $"$DHCP offer" $msg$

D$.$ Host requests IP address by $"$DHCP request" $msg$ and $DHCP$ server sends address by $"$DHCP ack" $msg$