Medium Access Control MCQs

What does MAC stand for in data communication?

• Main Access Control

• Media Access Control

• Multiple Address Channel

• Medium Analysis Command

Which sublayer of the data-link layer does MAC belong to?

• Logical Link Control

• Media Access Control

• Transport Layer

• Network Interface

What is the purpose of media access control protocols?

• To regulate the power of transmitted signals

• To determine access to a shared communication medium

• To encrypt data

• To route data to another network

Which of the following uses CSMA/CD?

• Wi-Fi

• Ethernet

• Bluetooth

• ZigBee

Which protocol is used in IEEE 802.11 (Wi-Fi)?

• CSMA/CD

• Token Ring

• CSMA/CA

• Pure ALOHA

What is a characteristic of random access methods?

• Centralized scheduling

• Token-based access

• Collision possibility

• Predefined time slots only

What happens when multiple stations send data at the same time?

• The signals are amplified

• A collision occurs

• Data is queued

• Data is rerouted

Which random access protocol was developed at the University of Hawaii?

• CSMA

• OFDMA

• ALOHA

• Token Ring

How does Pure ALOHA handle collisions?

• By using tokens

• By waiting a random time before retransmission

• By avoiding collision through sensing

• By increasing the bandwidth

What is the vulnerable time in Pure ALOHA?

• 1 × Tfr

• 0.5 × Tfr

• 2 × Tfr

• 3 × Tfr