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are destined to C or not). From what senders do these frames arrive? C' B' A 2 3 A' B C

are destined to C or not). From what senders do these frames arrive? C' B' A 2 3 A' B C

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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please take a look at the two pic. urgent

6.3A-3. Multiple Access protocols (3). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times t=0.1, 1.4, 1.8, 3.2, 3.3, 4.1. Each transmission requires exactly one time unit. t=0.0 L 1 [ [ 5 3 1 st For the CSMA protocol (without collision detection), indicate which packets are successfully transmitted. You should assume that it takes .2 time units for a signal to propagate from one node to each of the other nodes. You can assume that if a packet experiences a collision or senses the channel busy, then that node will not attempt a retransmission of that packet until sometime after t=5. Hint: consider propagation times carefully here. [Note: You can find more examples of problems similar to this here B.) 6 t=1.0 N 2 3 t=2.0 45 t=3.0 6 t=4.0 t=5.0
Transcribed Image Text:6.3A-3. Multiple Access protocols (3). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times t=0.1, 1.4, 1.8, 3.2, 3.3, 4.1. Each transmission requires exactly one time unit. t=0.0 L 1 [ [ 5 3 1 st For the CSMA protocol (without collision detection), indicate which packets are successfully transmitted. You should assume that it takes .2 time units for a signal to propagate from one node to each of the other nodes. You can assume that if a packet experiences a collision or senses the channel busy, then that node will not attempt a retransmission of that packet until sometime after t=5. Hint: consider propagation times carefully here. [Note: You can find more examples of problems similar to this here B.) 6 t=1.0 N 2 3 t=2.0 45 t=3.0 6 t=4.0 t=5.0
6.4-5. Self Learning Switches (b). Consider the network below with six nodes, star-connected into an Ethernet switch. Suppose that A sends a frame to A, A' replies to A, then B sends a message to B' and B' replies to B. Suppose you are node C, and consider the frames arriving to node C's interface (whether they are destined to C or not). From what senders do these frames arrive? C' B' > () > B U ینا A' C A T A 2 3 A' B C Not quite. This answer is incorrect.
Transcribed Image Text:6.4-5. Self Learning Switches (b). Consider the network below with six nodes, star-connected into an Ethernet switch. Suppose that A sends a frame to A, A' replies to A, then B sends a message to B' and B' replies to B. Suppose you are node C, and consider the frames arriving to node C's interface (whether they are destined to C or not). From what senders do these frames arrive? C' B' > () > B U ینا A' C A T A 2 3 A' B C Not quite. This answer is incorrect.
Expert Solution
Step 1: Introduction

CSMA/CD - In the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) protocol, nodes listen to the channel to check for ongoing transmissions before attempting to transmit. If the channel is busy, they wait for it to become idle. If two nodes start transmitting at the same time and a collision is detected, both nodes stop transmitting and wait for a random backoff period before reattempting the transmission.

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