University of the PeopleCS 4404quiz questions comm networks 2 ( 44 PAGES, ALL ANSWERS ARE 100% CORRECT )

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Question 1 Correct Mark 1.00 out of 1.00 Flag question Question text Which is NOT a network topology? Select one: a. Centralized b. Decentralized c. Star d. Distributed Feedback The correc... t answer is: Star Question 2 Correct Mark 1.00 out of 1.00 Flag question Question text Which layer is known as the “physical layer” of the reference architecture? Select one: a. Physical b. Link c. End to end d. Network Feedback The correct answer is: Physical Question 3 Correct Mark 1.00 out of 1.00Flag question Question text Packets from higher layers become nested inside the packets of higher layers as they are passed down the protocol stack Select one: True False Feedback The correct answer is 'False'. Question 4 Correct Mark 1.00 out of 1.00 Flag question Question text Lost or damaged packets should be: Select one: a. Discarded b. Retransmitted c. Stored d. Forwarded Feedback The correct answer is: Retransmitted Question 5 Correct Mark 1.00 out of 1.00 Flag question Question textReal-world systems are designed with sub-peak capacity for economic reasons. As a result, they experience congestion and delays during off-peak usage periods. Select one: True False Feedback The correct answer is 'False'. Question 6 Correct Mark 1.00 out of 1.00 Flag question Question text Which of the following is NOT A type of delay associated with packet transmissions. Select one: a. Processing b. Transmission c. Propagation d. Routing Feedback The correct answer is: Routing Question 7 Correct Mark 1.00 out of 1.00 Flag question Question text Which retransmission strategy is the most efficient? Select one: a. Go back b. Stop and wait c. Selective Repeatd. Sliding window Feedback The correct answer is: Sliding window Question 8 Correct Mark 1.00 out of 1.00 Flag question Question text Broadcast links allow connecting multiple network nodes via the same link. Hence, when one node transmits, all or most other nodes on the link can hear the transmission. If two or more nodes are transmitting simultaneously, their signals will interfere with each other, which technique will NOT avoid this situation? Select one: a. Timed transmissions b. Listening before speaking c. Statistical Multiplexing d. Retransmission of corrupted information Feedback The correct answer is: Statistical Multiplexing Question 9 Correct Mark 1.00 out of 1.00 Flag question Question text The amount of processing required at the bridge, as opposed to a switch is minimal because bridged networks use the same protocols. Select one: TrueFalse Feedback The correct answer is 'True'. Question 10 Correct Mark 1.00 out of 1.00 Flag question Question text Which of the following is an example of dotted decimal notation for IP addresses: Select one: a. 128 . 6 . 29 . 131 b. 10000000 00000110 00011101 10000011 c. my.uopeople.org/ d. 192.168.1.1/24 Feedback The correct answer is: 128 . 6 . 29 . 131 Question 1 Correct Mark 1.00 out of 1.00 Flag question Question text What is the purpose of the retransmission timer? Select one: a. Timeouts when expected packet is not received b. Records reception times in packets c. Sets the retransmission timeout value d. is known as exponential backoff FeedbackThe correct answer is: Timeouts when expected packet is not received Question 2 Correct Mark 1.00 out of 1.00 Flag question Question text TCP sends segments in bursts (or, groups of segments), every burst containing the number of segments limited by. Select one: a. Packet size b. the current window size c. Segment size d. Burst speed Feedback The correct answer is: the current window size Question 3 Correct Mark 1.00 out of 1.00 Flag question Question text TCP protocol determines the optimal window size by what method? Select one: a. Predefined b. Dynamically c. Traffic analysis d. QoS Feedback The correct answer is: Dynamically [Show More]

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