Podcast
Questions and Answers
What is the main task of Multiple Access Protocols?
What is the main task of Multiple Access Protocols?
- Ignore collisions to save bandwidth
- Minimize collisions to utilize bandwidth (correct)
- Amplify collisions to share bandwidth
- Maximize collisions to improve bandwidth
Which layer is responsible for error and flow control in the data link layer?
Which layer is responsible for error and flow control in the data link layer?
- Multiple Access Control (MAC) Control
- Medium Access Control (MAC)
- Broadcast link
- Link Layer Control (LLC) (correct)
What is the purpose of Medium Access Control (MAC) protocols?
What is the purpose of Medium Access Control (MAC) protocols?
- Isolate nodes from accessing the shared link
- Assign dedicated links to each node
- Increase collisions on the shared link
- Coordinate the access of multiple nodes to a shared link (correct)
What is the role of the MAC Control sublayer in the data link layer?
What is the role of the MAC Control sublayer in the data link layer?
What does the term 'throughput' refer to in networking?
What does the term 'throughput' refer to in networking?
How is the propagation delay defined in networking?
How is the propagation delay defined in networking?
What problem arises when two or more nodes transmit at the same time in a broadcast link?
What problem arises when two or more nodes transmit at the same time in a broadcast link?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of CDMA (Code Division Multiple Access)?
What is the characteristic of CDMA (Code Division Multiple Access)?
What does TDMA (Time Division Multiple Access) use to share the bandwidth capacity?
What does TDMA (Time Division Multiple Access) use to share the bandwidth capacity?
How does FDMA assign the transmission frequency?
How does FDMA assign the transmission frequency?
What is the limitation of a node in FDMA?
What is the limitation of a node in FDMA?
What is the main feature of CDMA data transmission?
What is the main feature of CDMA data transmission?
What distinguishes TDMA from FDMA and CDMA in terms of bandwidth sharing?
What distinguishes TDMA from FDMA and CDMA in terms of bandwidth sharing?
What is the method used by CDMA stations to recover the data for the desired station?
What is the method used by CDMA stations to recover the data for the desired station?
What is the main function of Multiple Access Control (MAC) protocols?
What is the main function of Multiple Access Control (MAC) protocols?
What is the purpose of the Medium Access Control (MAC) layer in the data link layer?
What is the purpose of the Medium Access Control (MAC) layer in the data link layer?
What does the term 'throughput' refer to in networking?
What does the term 'throughput' refer to in networking?
How is the propagation delay defined in networking?
How is the propagation delay defined in networking?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the role of the Link Layer Control (LLC) in the data link layer?
What is the role of the Link Layer Control (LLC) in the data link layer?
What is the limitation of a node in FDMA (Frequency Division Multiple Access)?
What is the limitation of a node in FDMA (Frequency Division Multiple Access)?
Which protocol divides time into slots equal to frame transmission time?
Which protocol divides time into slots equal to frame transmission time?
What is the vulnerable time for CSMA?
What is the vulnerable time for CSMA?
What is the main characteristic of 1-Persistent CSMA protocol?
What is the main characteristic of 1-Persistent CSMA protocol?
What is the purpose of Non-Persistent CSMA protocol?
What is the purpose of Non-Persistent CSMA protocol?
What does ALOHA network do whenever there's a packet to transmit?
What does ALOHA network do whenever there's a packet to transmit?
What is the role of CSMA protocol before transmitting?
What is the role of CSMA protocol before transmitting?
What is the maximum propagation delay in networking?
What is the maximum propagation delay in networking?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What distinguishes TDMA from FDMA and CDMA in terms of bandwidth sharing?
What distinguishes TDMA from FDMA and CDMA in terms of bandwidth sharing?
What is the characteristic of CDMA (Code Division Multiple Access)?
What is the characteristic of CDMA (Code Division Multiple Access)?
What is the limitation of a node in FDMA?
What is the limitation of a node in FDMA?
How does TDMA (Time Division Multiple Access) share the bandwidth capacity?
How does TDMA (Time Division Multiple Access) share the bandwidth capacity?
What is the method used by CDMA stations to recover the data for the desired station?
What is the method used by CDMA stations to recover the data for the desired station?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of CDMA (Code Division Multiple Access)?
What is the characteristic of CDMA (Code Division Multiple Access)?
What does FDMA (Frequency Division Multiple Access) use to assign the fixed sending frequency to a transmission channel?
What does FDMA (Frequency Division Multiple Access) use to assign the fixed sending frequency to a transmission channel?
What is the characteristic of TDMA (Time Division Multiple Access)?
What is the characteristic of TDMA (Time Division Multiple Access)?
In CSMA/CD, what happens if a collision is detected during transmission?
In CSMA/CD, what happens if a collision is detected during transmission?
What is the main advantage of Controlled Access or Scheduling protocols over CSMA/CD?
What is the main advantage of Controlled Access or Scheduling protocols over CSMA/CD?
What method does the Reservation Access Method use to organize transmissions?
What method does the Reservation Access Method use to organize transmissions?
What is the primary role of the Polling method in Controlled Access protocols?
What is the primary role of the Polling method in Controlled Access protocols?
What is the key characteristic of Token-Passing network method?
What is the key characteristic of Token-Passing network method?
What is the primary purpose of Channelization in multiple-access methods?
What is the primary purpose of Channelization in multiple-access methods?
How does TDMA (Time Division Multiple Access) share the channel's bandwidth?
How does TDMA (Time Division Multiple Access) share the channel's bandwidth?
Which protocol requires stations to use a random retransmission time to avoid collisions?
Which protocol requires stations to use a random retransmission time to avoid collisions?
What does Carrier Sense Multiple Access (CSMA) protocol require stations to do before transmitting?
What does Carrier Sense Multiple Access (CSMA) protocol require stations to do before transmitting?
What is the maximum propagation delay?
What is the maximum propagation delay?
What does Non-Persistent CSMA protocol involve when the medium is busy?
What does Non-Persistent CSMA protocol involve when the medium is busy?
What is the vulnerable time for CSMA?
What is the vulnerable time for CSMA?
What does 1-Persistent CSMA protocol aim to avoid?
What does 1-Persistent CSMA protocol aim to avoid?
What do different types of CSMA protocols determine?
What do different types of CSMA protocols determine?
What is the primary purpose of CSMA/CD (Carrier Sense Multiple Access with Collision Detection) over CSMA?
What is the primary purpose of CSMA/CD (Carrier Sense Multiple Access with Collision Detection) over CSMA?
What is the maximum propagation delay for detecting a collision in CSMA/CD?
What is the maximum propagation delay for detecting a collision in CSMA/CD?
What method does the Reservation Access Method use to organize transmissions?
What method does the Reservation Access Method use to organize transmissions?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What is the characteristic of FDMA (Frequency Division Multiple Access)?
What does TDMA (Time Division Multiple Access) use to share the channel's bandwidth?
What does TDMA (Time Division Multiple Access) use to share the channel's bandwidth?
What is the main function of Multiple Access Control (MAC) protocols?
What is the main function of Multiple Access Control (MAC) protocols?
What is the main advantage of Controlled Access or Scheduling protocols over CSMA/CD?
What is the main advantage of Controlled Access or Scheduling protocols over CSMA/CD?
What is the vulnerable time for pure ALOHA protocol?
What is the vulnerable time for pure ALOHA protocol?
What is the maximum throughput for slotted ALOHA?
What is the maximum throughput for slotted ALOHA?
What is the main advantage of ALOHA protocols?
What is the main advantage of ALOHA protocols?
What is the vulnerable time for CSMA protocol?
What is the vulnerable time for CSMA protocol?
What does 1-persistent CSMA protocol do to avoid idle channel time?
What does 1-persistent CSMA protocol do to avoid idle channel time?
What determines the maximum throughput for pure ALOHA?
What determines the maximum throughput for pure ALOHA?
What is the main disadvantage of ALOHA protocols?
What is the main disadvantage of ALOHA protocols?
What is the main advantage of P-persistent CSMA over non-persistent CSMA?
What is the main advantage of P-persistent CSMA over non-persistent CSMA?
In CSMA/CD, what does a station do if a collision is detected during transmission?
In CSMA/CD, what does a station do if a collision is detected during transmission?
What is the restriction for CSMA/CD regarding packet transmission time and collision detection?
What is the restriction for CSMA/CD regarding packet transmission time and collision detection?
What is the purpose of the Poll frame in the centralized polling access method?
What is the purpose of the Poll frame in the centralized polling access method?
What is the role of a station in a Token-Passing network when in the transmit state?
What is the role of a station in a Token-Passing network when in the transmit state?
What does FDMA (Frequency Division Multiple Access) assign to a transmission channel?
What does FDMA (Frequency Division Multiple Access) assign to a transmission channel?
What is the primary advantage of TDMA (Time Division Multiple Access) over FDMA?
What is the primary advantage of TDMA (Time Division Multiple Access) over FDMA?
Study Notes
CSMA/CD and Controlled Access Protocols
- CSMA/CD (Carrier Sense Multiple Access with Collision Detection) overcomes the inefficiency of CSMA by detecting collisions during transmission and reducing channel wastage.
- CSMA/CD is widely used for bus topology LANs, such as IEEE 802.3 Ethernet.
- If a collision is detected during transmission in CSMA/CD, the sender aborts transmission, transmits a jam signal to notify other stations, and then waits for a random amount of time before retransmitting the frame.
- The time it takes to detect a collision in CSMA/CD is at most twice the maximum propagation delay of the medium.
- The packet transmission time in CSMA/CD should be at least as long as the time needed to detect a collision to have an advantage over CSMA.
- Controlled Access or Scheduling protocols provide fair access to the shared medium and eliminate collisions completely.
- There are three methods for controlled access: Reservation, Polling, and Token Passing.
- In the Reservation Access Method, stations take turns transmitting frames at a full rate and make reservations in minislots to organize transmissions.
- Polling can be centralized or distributed, with the primary station coordinating data exchanges and asking secondary stations for data.
- Token-Passing network involves stations listening to arriving bits in the listen state and transmitting frames after capturing a free token in the transmit state.
- Channelization is a multiple-access method for sharing the available bandwidth of a link in time, frequency, or through code, between different stations.
- FDMA (Frequency Division Multiple Access) assigns a frequency to a transmission channel, while TDMA (Time Division Multiple Access) shares the channel in time slots.
CSMA/CD and Controlled Access Protocols
- CSMA/CD (Carrier Sense Multiple Access with Collision Detection) overcomes the inefficiency of CSMA by detecting collisions during transmission and reducing channel wastage.
- CSMA/CD is widely used for bus topology LANs, such as IEEE 802.3 Ethernet.
- If a collision is detected during transmission in CSMA/CD, the sender aborts transmission, transmits a jam signal to notify other stations, and then waits for a random amount of time before retransmitting the frame.
- The time it takes to detect a collision in CSMA/CD is at most twice the maximum propagation delay of the medium.
- The packet transmission time in CSMA/CD should be at least as long as the time needed to detect a collision to have an advantage over CSMA.
- Controlled Access or Scheduling protocols provide fair access to the shared medium and eliminate collisions completely.
- There are three methods for controlled access: Reservation, Polling, and Token Passing.
- In the Reservation Access Method, stations take turns transmitting frames at a full rate and make reservations in minislots to organize transmissions.
- Polling can be centralized or distributed, with the primary station coordinating data exchanges and asking secondary stations for data.
- Token-Passing network involves stations listening to arriving bits in the listen state and transmitting frames after capturing a free token in the transmit state.
- Channelization is a multiple-access method for sharing the available bandwidth of a link in time, frequency, or through code, between different stations.
- FDMA (Frequency Division Multiple Access) assigns a frequency to a transmission channel, while TDMA (Time Division Multiple Access) shares the channel in time slots.
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Description
Test your knowledge of CSMA/CD and Controlled Access Protocols with this quiz. Explore the concepts of collision detection, jam signals, and fair access methods such as Reservation, Polling, and Token Passing. Gain insights into multiple-access methods like FDMA and TDMA for efficient bandwidth sharing.
