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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

CSMA-CA

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How does the backoff mechanism in CSMA/CA help in avoiding collisions?

a: It forces all devices to wait for the same time before transmission Explanation

Explanation

b: It introduces a random delay before retransmission Explanation

Explanation

c: It immediately retries transmission after a failed attempt Explanation

Explanation

d: It prevents hidden node problems Explanation

Explanation

What does the Clear-to-Send (CTS) signal indicate in CSMA/CA?

a: The channel is free for any device to transmit Explanation

Explanation

b: The sender can now transmit data Explanation

Explanation

c: A collision has occurred Explanation

Explanation

d: The transmission failed Explanation

Explanation

What happens when a device detects that the channel is busy in CSMA/CA?

a: It transmits immediately Explanation

Explanation

b: It waits for an ACK signal Explanation

Explanation

c: It defers transmission and starts a backoff timer Explanation

Explanation

d: It increases its transmission power Explanation

Explanation

If two devices transmit at the same time despite CSMA/CA, what happens?

a: The transmission is successful for both devices Explanation

Explanation

b: Both devices receive an ACK Explanation

Explanation

c: Packets may collide and require retransmission Explanation

Explanation

d: The devices will shut down Explanation

Explanation

How does CSMA/CA handle the hidden node problem?

a: By using RTS/CTS before transmitting data Explanation

Explanation

b: By allowing simultaneous transmissions Explanation

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c: By increasing transmission power Explanation

Explanation

d: By using CSMA/CD instead Explanation

Explanation

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