$1-$Specify the protocol stack used. Complete the named protocols by specifying thecorresponding OSI layers.

$2-$ How many bytes does the pure DHCP ACK message comprise, assuming a minimal IPv$4$ header?

$3-$ Which IP address is assigned to the requesting DHCP client?

$4-$ What are the IP addresses of the following network elements?

$$ DHCP server:

$$ Gateway$/$Router:

$$ DNS server:

$5-$What is the maximum number of minutes the assigned client IP address is valid?

$6-$ What is the network ID of the IP subnet?

$7-$ What are the well known ports for the following network elements?

$$ DHCP client:

$$ DHCP server:

$8-$ Why does the DHCP server send the DHCP ACK message directly to the IP address $192\mathrm{.}168\mathrm{.}1\mathrm{.}20?$