Cisco Chapter 3/2

Question 1

multiplexing

TCP

Answer 1

By sending smaller individual pieces from source to destination, many different conversations can be interleaved on the network

Question 2

Message Segmentation
making a message in smaller bits
UDP

Answer 2

can increase the efficiency of network communications. If part of the message fails to make it to the destination, due to failure in the network or network congestion, only the missing parts need to be retransmitted.

Question 3

Protocol Data Units

Doh! Some People Fear Birthdays

Answer 3

Data: Application layer. A general term for the PDU
Segments: Transport layer PDU
Packets: Network Layer PDU
Fragments: Data link layer
Bits: Physical layer. Transmitting physical data over the medium

Question 4

Network layer source and destination addresses

Answer 4

Responsible for delivering the IP packet from the original source to the final destination, either on the same network or to a remote network.

Question 5

Data link layer source and destination addresses

Answer 5

Responsible for delivering the data link frame from one network interface card (NIC) to another NIC on the same network.

Question 6

Source IP address

Answer 6

The IP address of the sending device, the original source of the packet.

Question 7

Destination IP address

Answer 7

The IP address of the receiving device, the final destination of the packet.

Question 8

Source data link address

Answer 8

The physical address of the device’s NIC that is sending the data link frame.

Question 9

Destination data link address

Answer 9

The physical address of the NIC that is receiving the data link frame. This address is either the next hop router or of the final destination device.