Question $1$

$12$ pts

Mark the sentences that are TRUE about the TCP$/$IP reference model $($There could be $0,1,2,3$ or $4).$

The transport layer implements host$-$to$-$host communication

The primary transport layer protocols within the TCP$/$IP reference model are TCP and UDP

The network layer offers services to the transport layer

The TCP$/$IP reference model defines $9$ layers