s te a class C IP address the D. 2097153 E. None of the shove is 19, Which of th
ID: 2265995 • Letter: S
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s te a class C IP address the D. 2097153 E. None of the shove is 19, Which of the a connection betwon a computer and a setork Each interface An IP E. None of the ahove is 20. TCP uses A. Stop and go stratey where if a packet is losa the sendor gos to the fient paket in the B. Stop and wait strategy where if a packet is lost the sender stops trmis C. Time out and re-tramsmission sarasegy whore and was for an quside user to sesolve the problem re if a packct is not acksow lodged b thhe receiver within a timeout period the sender goes to the first packet in the buffer and start re-ranission is not transmits that packet a sralegy whene ifa packt is not acknowledged by the noceiver within a timer perkod the sonder re- E. None of the above is truc. 21. In ALOHA A. A computer checks the transmission line for any data before start sending any packet B. A computer checks the transmission line for any collisions before start sending any packet C A computer does not check the transmission line Sor any data before start sending any packet D. A computer checks the transmission line foe the token befiec start sending any packet E. None of the above is ruc 22. In CSMA: A. A computer checks the transmission line for any data before start sending any packct B. A computer checks the transmission line for only collisions before start sending any packet C. A compater does not check the transmission line for any data before start sending any packet D. A computer checks the transmission line for the token before start sending any packst E. None of the above is true 23. In CSMA/CD: A. A computer checks the transmission line for any data before start sending any packet B. A computer checks the transmission line for only collisions before start sending any packet C. A computer does not check the transmission line for any data before start sending any packet D. A computer checks the transmission line for the token before start sending any packet E. None of the above is true. 24. In CSMA/CD if a collision is detected: A All computers involve in the collision must wait for the same amount of time before re-transmitting the lost packet B. The computer located flarthest from the collision is allowed to re-transmit first C. The computer located furthest from the collision is allowed to re-transmit last D. All computers involve in the collision must wait for a random amount of time within a specific time period before re-transmitting the l packet E None of the above is trueExplanation / Answer
21- in ALOHA a computer doesnt check for traffic before sending the data if collision occurs the data is sent again. Therefore C is correct.
22- CSMA when a system is ready to transmit it keeps on checking for the channel as it gets the channel free it transmits the message. Therefore A is correct
23- before sending the data the computer checks whether the channel is free or not. Therefore A
24 - if collision is detected all computers imvolved arr given a random amount of time to wait before retransmission. Therefore D is correct
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