9 Data Link Layer

Question 1

Data link Layer

Answer 1

Data link layer is responsible to transfer frame from one node to another node.

Question 2

Data Link Control:

Answer 2

manages error checking and data flow over a network.

Question 3

Media Access Control

Answer 3

: It is used for source and destination addresses.

Question 4

services of data link layer: framing

Answer 4

The data link layer at each node needs to encapsulate the datagram in a frame before sending it to the next node.

Question 5

services of data link layer: flow control

Answer 5

Data-link layer ensures flow control that enables both machine to exchange data on same speed

Question 6

services of data link layer: error control

Answer 6

In this if the error needs first to be detected. After detection, it needs to be either corrected at the receiver node or discarded and retransmitted by the sending node.

Question 7

services of data link layer: congestion control

Answer 7

No data loss during the frame transfer

Question 8

order of addressea: data link layer

Answer 8

MAC: destination-source
IP: source- destonation(no change)

Question 9

Address Resolution Protocol

Answer 9

The ARP Protocol is one of the auxiliary protocol defined in the network layer because it belongs of network layer protocol, but it maps an IP address to a logical address when network layer sending some data-to-Data link layer.
- to discover the MAC Address associated with a internet layer address .