Quiz 3

Question 1

Application and transport are predominantly ISO standards. What standards are the bottom 2 layers?

Answer 1

Internet, Network Interface are OSI standards.

Question 2

Name the 5 data link layer functions:

Answer 2

Data Framing
Media Access Control (MAC)
Addressing
Flow Control
Error Correction

Question 3

Data Framing:

Answer 3

The data link layer is responsible for the final encapsulation of higher-level messages into frames, so it can be sent across a single switched network by the physical layer. And the synchronization of machines at each end of the link

Question 4

Media Access Control (MAC):

Answer 4

On wireless networks or older non-switched Ethernet networks, the DLL is responsible for setting rules to manage devices which share a common medium.

Question 5

Addressing:

Answer 5

Each device on a network has a unique number, usually called a hardware address or MAC address. The data link layer is responsible for adding the source and destination MAC addresses to the frame header to ensure proper delivery