6.3-1. Channel partitioning protocols. Which of the following statements is true about channel partitioning protocols?Group of answer choicesChannel partitioning protocol can achieve 100% utilization, in the case that there is only one node that always has frames to sendChannel partitioning protocols can achieve 100% channel utilization, in the case that all nodes always have frames to send.There can be simultaneous transmissions resulting in collisions.There can be times when the channel is idle, when a node has a frame to send, but is prevented from doing so by the medium access protocol.
Question
6.3-1. Channel partitioning protocols. Which of the following statements is true about channel partitioning protocols?Group of answer choicesChannel partitioning protocol can achieve 100% utilization, in the case that there is only one node that always has frames to sendChannel partitioning protocols can achieve 100% channel utilization, in the case that all nodes always have frames to send.There can be simultaneous transmissions resulting in collisions.There can be times when the channel is idle, when a node has a frame to send, but is prevented from doing so by the medium access protocol.
Solution
The statement that is true about channel partitioning protocols is: "There can be times when the channel is idle, when a node has a frame to send, but is prevented from doing so by the medium access protocol."
Explanation: Channel partitioning protocols divide the channel into smaller pieces (time slots, frequency, code) and assign one piece to each node for exclusive use. This means that there can be times when the channel is idle, even when a node has a frame to send, because the medium access protocol prevents it from doing so. This could be due to the fact that the node's assigned time slot has not yet arrived, or because the node's assigned frequency or code is currently being used by another node.
The other statements are not generally true. While it is theoretically possible for a channel partitioning protocol to achieve 100% utilization if there is only one node that always has frames to send or if all nodes always have frames to send, this is not typically the case in practice due to factors such as propagation delay and the fact that nodes may not always have frames to send. Simultaneous transmissions resulting in collisions are also not a characteristic of channel partitioning protocols, as these protocols are designed to prevent collisions by ensuring that only one node can use the channel at a time.
Similar Questions
6.3-3. Polling and token-passing protocols. Which of the following statements is true about polling and token-passing protocols?Group of answer choicesThese protocol can achieve close to 100% channel utilization, in the case that all nodes always have frames to send (the fact that the utilization is close to, but not exactly, 100% is due to a small amount of medium access overhead but not due to collisions)There can be times when the channel is idle for more than a short period of time, when a node has a frame to send, but is prevented from doing so by the medium access protocol.There can be simultaneous transmissions resulting in collisions.These protocol can achieve close 100% utilization, in the case that there is only one node that always has frames to send (the fact that the utilization is close to, but not exactly, 100% is due to a small amount of medium access overhead but not due to collisions)
6.3-2. Pure Aloha and CSMA. Which of the following statements is true about both Pure Aloha, and CSMA (both with and without collision detection?Group of answer choicesThere can be simultaneous transmissions resulting in collisions.Pure Aloha and CSMA can achieve 100% utilization, in the case that there is only one node that always has frames to sendThere can be times when the channel is idle, when a node has a frame to send, but is prevented from doing so by the medium access protocol.Pure Aloha and CSMA can achieve 100% channel utilization, in the case that all nodes always have frames to send.
Discusstype of Channels.
Which of he following statements is NOT true concerning streaming of video or audio over the Internet?Question 6AnswerAdaptive streaming requires that there should be multiple encoded versions of the same content available from the serverStreaming is characterised by the need to continuously receive, decode and render (or "play") a segment of the media within a fixed deadlineThe need to accommodate packet delay variation and packet loss can mean a long delay in the receiver due to bufferingProgressive Download requires the whole media file to be downloaded before playback can begin
Channel Partitioning, Random Access and Taking Turns are the method available inAnswer :Medium Access Control ProtocolInternet Control Message Protocol Address Resolution Protocol Point-to-Point Protocol
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