Layer 2

Question 1

Media Access Control (MAC)

Answer 1

Physical addressing system of a device which operates on a logical topology. Every network interface card produces a 48-bit address

Question 2

Logical Link Control (LLC)

Answer 2

Provides connection services and allows acknowledgement of receipt of messages. Most basic form of flow control, provides basic error control functions,

Question 3

Isochronous

Answer 3

Network devices use a common reference clock source & create time slots for transmission

Question 4

Synchronous

Answer 4

Network devices agree on clocking method to indicate beginning and end of frames and can use control characters

Question 5

Asynchronous

Answer 5

Network devices references their own internal clocks and use start and stop bits

Question 6

Device examples

Answer 6

interface cards, switches, Bridges