Two machines on the same network must have the same value for the machine part of their IP addresses

Two machines on the same network must have the same value for the network portion of their IP addresses

Two machines on two different networks must have the same value of the machine part of their IP addresses

Two machines on two different networks must have the same value of the network portion of their IP addresses

Network-ID, Machine-ID and Broadcast-ID

Machine-ID and application-ID

Network-ID, Machine-ID and constructor-ID

Network-ID and Machine-ID

To get an IP address from a MAC address

To get a MAC address from a port number

When machine A does not have the MAC address of the destination host

When the interface of machine A does not have an assigned MAC address

Layer 2

Layer 7

Layer 4

Layer 1

Layer 3

IP will not even be aware of this loss, it is not part of its functionality

IP retransmet le message

It asks the physical layer to retransmit

IP informs the destination to retransmit

By checking the source IP address to see if it is the same network

By checking the destination MAC address

By checking the destination IP address

A router never receives packets for itself, it receives always packets to route

By applying the mask, the sending machine will know that the destination IP address does not correspond to any machine in the network and reject the message

The message will be sent and no machine will receive it

The sending machine will not be able to obtain the MAC address of the destination machine and will never send the message

It retransmits data in case of loss

It divides the network into multiple broadcast domains

It gives sequence numbers to the messages it transfers

It directs the flow to a particular application

To avoid a collision, machine A avoids sending when the switch is processing data

To avoid a collision, machine A avoids sending, when a signal leaves the switch to go to machine A

To avoid a collision, machine A avoids sending when a signal is going from B to the switch

Manage data multiplexing with port numbers

Manage the addresses given to the two extremities machines 

Manage the splitting of the application flow into several messages

Manage the flow with the reception windows