Layer 2 - Data Link

Question 1

It focuses on the physical addressing of the transmission. It receives a packet from the network layer (including the IP address for the remote computer) and adds in the physical MAC (Media Access Control) address of the receiving endpoint.

Answer 1

Data Link

Question 2

What does the term NIC stand for?

Answer 2

Network Interface Card

Question 3

It set by the manufacturer and literally burnt into the card; they can’t be changed – although they can be spoofed. When information is sent across a network, it’s actually the physical address that is used to identify where exactly to send the information.

Answer 3

Mac Addresses

Question 4

It presents the data in a format suitable for transmission.

Answer 4

Data Link

Question 5

What is the name of the piece of hardware that all networked devices come with?

Answer 5

Network Interface Card