Destination: 10.2.1.0/16, next router: 10.2.1.3

Destination: 10.2.0.0/16, next router: 10.2.1.3

Destination: 10.2.1.0/16, next router: 10.1.1.3

Destination: 10.2.0.0/16, next router: 10.1.1.3

It retransmits the message in case of collision

It avoids overloading the network by limiting the flow

It puts back in order the messages at the reception

It allows machines to perform the necessary actions that allow messages to reach a remote destination

It discards the packet at layer 3

It considers that the packet was intended for it

It routes it to the machine that has the destination MAC address

It rejects the packet at layer 2

To guarantee uniqueness of the destination and to be sure that it is the right destination

Because a message can pass through several machines to reach the destination

To allow the receiving machine to check that the message is sent to it

Because an IP address is not stable

The MAC address of the machines on the same network are given in the configuration

By sending an ARP request in broadcast

By sending an ARP request in unicast to the target machine

MAC addresses are published on a server that the machine will request

A and B must use the same protocols on all layers

A and B can use different Layer 4 protocols

A and B must use the same type of physical medium

A and B and all routers must use the same Layer 3 protocol

To manage the flow of data

To provide a security layer

To carry data to the application

To interconnect machines belonging to different networks

10.64.0.0/12

10.192.0.0/12

10.0.0.32/16

10.128.0.0/11

By looking in its routing table

By asking the UDP protocol

By looking in its ARP table

By looking at its interface configuration

Destination: 10.2.1.0/16, next router: 10.2.1.3

Destination: 10.2.0.0/16, next router: 10.2.1.3

Destination: 10.2.1.0/16, next router: 10.1.1.3

Destination: 10.2.0.0/16, next router: 10.1.1.3