ITT640 Part 2

Which OSI layer does the MAC protocol belong to?

• Network Layer

• Physical Layer

• Data Link Layer

• Application Layer

What is the main responsibility of MAC in a network?

• Encrypting data

• Managing IP addresses

• Controlling access to the shared medium

• Managing routing

MAC helps in resolving:

• Server errors

• IP conflicts

• Conflicts between competing nodes

• Session termination

Which function is NOT part of MAC responsibilities?

• Framing

• Flow control

• IP addressing

• Communication error correction

Token passing is an example of:

• Contention-based

• Dynamic contention

• Contention-free

• MAC collision

Which of the following MAC methods is oldest?

• ALOHA

• Polling

• TDMA

• CSMA

Why is MAC important in wireless networks?

• It provides unlimited bandwidth

• It ensures reliable communication

• It reduces power usage

• It eliminates noise

MAC protocols decide:

• When a station transmits

• How data is encrypted

• Packet routing

• Device configuration

In the IEEE 802 model, MAC is part of:

• Physical layer

• Logical link control

• Data link layer

• Transport layer

MAC helps improve:

• Hardware compatibility

• Application speeds

• Transmission efficiency

• Address resolution