Data Link Layer Chapter Outline

Play an AI-generated podcast conversation about this lesson

Random access is a method where stations take turns to send data.

False

Wireless Local Area Networks (WLANs) use dynamic medium access control.

True

PPP protocol is an example of a point-to-point protocol.

True

Ethernet uses static channelization for media sharing.

False Signup and view all the answers

Satellite transmission is an example of dynamic medium access control.

False Signup and view all the answers

Token ring is an example of a random access method.

False Signup and view all the answers

Aloha is an example of a random access method.

True Signup and view all the answers

In multiple access communications, stations communicate using dedicated channels allocated to each user.

False Signup and view all the answers

In the pure ALOHA Protocol, a station waits for a specific time slot to transmit its data.

False Signup and view all the answers

If multiple frames are transmitted at the same time in the pure ALOHA Protocol, they do not interfere with each other.

False Signup and view all the answers

The receiver station in the pure ALOHA Protocol sends an acknowledgement (ACK) to the transmitter station if it receives a frame correctly.

True Signup and view all the answers

In the pure ALOHA Protocol, the retransmission of a frame occurs if the transmitter station does not receive an ACK within a random backoff time B.

False Signup and view all the answers

The vulnerability period in the pure ALOHA Protocol is equal to the sum of Tfr and 2tprop.

True Signup and view all the answers

In pure ALOHA, after the first transmission, a station waits for a fixed backoff period B before attempting retransmission.

False Signup and view all the answers

The timeout period in the pure ALOHA Protocol is defined as tprop + B.

False Signup and view all the answers

In pure ALOHA, if a station did not receive an ACK within the timeout period, it directly retransmits the frame without any backoff time.

False Signup and view all the answers

Each station monitors the medium during frame transmission to see if the transmission was successful.

True Signup and view all the answers

If a collision happens between stations A and C, station A will detect the collision first.

False Signup and view all the answers

The Ethernet frame size should be restricted for CSMA/CD to function properly.

True Signup and view all the answers

If the last bit of a frame is sent without detecting a collision, the station will keep a copy of the frame.

False Signup and view all the answers

The maximum throughput case results in 92 frames received out of 500 sent in a Slotted ALOHA network.

True Signup and view all the answers

If network stations send 300 frames per second, then G = 300 x Tfr = 0.30 for Slotted ALOHA protocol.

False Signup and view all the answers

In Slotted ALOHA, stations transmit frames in the first slot after frame arrival.

True Signup and view all the answers

The vulnerable period in Slotted ALOHA protocol is from t0 + Tfr + 2tprop to t0 + Tfr + 3tprop.

False Signup and view all the answers

The throughput S in Slotted ALOHA is defined as the ratio of successfully received frames to the number of frame transmission attempts.

True Signup and view all the answers

For Slotted Aloha protocol, S = G x e-G where G is the number of transmission attempts per frame transmission time.

True Signup and view all the answers

If the number of frame transmission attempts per second is 200 and Tfr is 0.05, then G = 200 x 0.05 = 10.

True Signup and view all the answers

In Slotted Aloha protocol, the time-out period occurs after B time slots.

True Signup and view all the answers

The throughput in the Pure Aloha protocol is defined as the ratio of successfully received frames to the number of frame transmission attempts.

True Signup and view all the answers

For Pure Aloha protocol, the throughput (S) is calculated by S = G x e-2G.

True Signup and view all the answers

In Pure Aloha, a higher number of transmission attempts per frame transmission time results in a higher throughput.

False Signup and view all the answers

If a Pure Aloha network transmits 200-bit frames on a shared channel of 200 kbps, the frame transmission time Tfr is 1 ms.

True Signup and view all the answers

If a network sends 1000 frames per second in Pure Aloha, the throughput (S) will be 0.135 (13.5%).

True Signup and view all the answers

For a Pure Aloha network sending 500 frames per second, the throughput (S) will be 0.184 (18.4%).

True Signup and view all the answers

The number of successfully received frames for a network sending 500 frames per second in Pure Aloha will be 250 frames.

False Signup and view all the answers

In Pure Aloha, a lower throughput value indicates a higher efficiency of the network.

False Signup and view all the answers

Data Link Layer Chapter Outline

Podcast Beta

Questions and Answers

Random access is a method where stations take turns to send data.

Wireless Local Area Networks (WLANs) use dynamic medium access control.

PPP protocol is an example of a point-to-point protocol.

Ethernet uses static channelization for media sharing.

Satellite transmission is an example of dynamic medium access control.

Token ring is an example of a random access method.

Aloha is an example of a random access method.

In multiple access communications, stations communicate using dedicated channels allocated to each user.

In the pure ALOHA Protocol, a station waits for a specific time slot to transmit its data.

If multiple frames are transmitted at the same time in the pure ALOHA Protocol, they do not interfere with each other.

The receiver station in the pure ALOHA Protocol sends an acknowledgement (ACK) to the transmitter station if it receives a frame correctly.

In the pure ALOHA Protocol, the retransmission of a frame occurs if the transmitter station does not receive an ACK within a random backoff time B.

The vulnerability period in the pure ALOHA Protocol is equal to the sum of Tfr and 2tprop.

In pure ALOHA, after the first transmission, a station waits for a fixed backoff period B before attempting retransmission.

The timeout period in the pure ALOHA Protocol is defined as tprop + B.

In pure ALOHA, if a station did not receive an ACK within the timeout period, it directly retransmits the frame without any backoff time.

Each station monitors the medium during frame transmission to see if the transmission was successful.

If a collision happens between stations A and C, station A will detect the collision first.

The Ethernet frame size should be restricted for CSMA/CD to function properly.

If the last bit of a frame is sent without detecting a collision, the station will keep a copy of the frame.

The maximum throughput case results in 92 frames received out of 500 sent in a Slotted ALOHA network.

If network stations send 300 frames per second, then G = 300 x Tfr = 0.30 for Slotted ALOHA protocol.

In Slotted ALOHA, stations transmit frames in the first slot after frame arrival.

The vulnerable period in Slotted ALOHA protocol is from t0 + Tfr + 2tprop to t0 + Tfr + 3tprop.

The throughput S in Slotted ALOHA is defined as the ratio of successfully received frames to the number of frame transmission attempts.

For Slotted Aloha protocol, S = G x e-G where G is the number of transmission attempts per frame transmission time.

If the number of frame transmission attempts per second is 200 and Tfr is 0.05, then G = 200 x 0.05 = 10.

In Slotted Aloha protocol, the time-out period occurs after B time slots.

The throughput in the Pure Aloha protocol is defined as the ratio of successfully received frames to the number of frame transmission attempts.

For Pure Aloha protocol, the throughput (S) is calculated by S = G x e-2G.

In Pure Aloha, a higher number of transmission attempts per frame transmission time results in a higher throughput.

If a Pure Aloha network transmits 200-bit frames on a shared channel of 200 kbps, the frame transmission time Tfr is 1 ms.

If a network sends 1000 frames per second in Pure Aloha, the throughput (S) will be 0.135 (13.5%).

For a Pure Aloha network sending 500 frames per second, the throughput (S) will be 0.184 (18.4%).

The number of successfully received frames for a network sending 500 frames per second in Pure Aloha will be 250 frames.

In Pure Aloha, a lower throughput value indicates a higher efficiency of the network.

More Quizzes Like This

Multiple Access Protocols in the Data Link Layer Quiz

CSMA/CD and CSMA/CA Protocols Quiz and Flashcards

2.3.3 Data Link Layer Quiz: Test Your Knowledge

Data-link Layer: Ideal Transmission Capacity