With each visit of this Data Communication and Networking online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.
Test Instructions Question type Randomized MCQs.Changes every time you visit the test Total Number of Questions 30 Time Limit 20 Minutes Points 1 Point for each Question
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Question 1 of 30
Q-1.A crossbar switch with x inputs and y outputs requires _______ crosspoints
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Question 2 of 30
Q-2.An FDDI station sends asynchronous data as long as the _______ value is positive
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Question 3 of 30
Q-3.An STS-1 frame contains _______ octets.
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Question 4 of 30
Q-4.In Project 802, the data link layer consists of the _______ sublayer and the _______ sublayer
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Question 5 of 30
Q-5.A _______ is usually privately owned and links the devices in a single office, building, or campus
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Question 6 of 30
Q-6.A sine wave completes one cycle in 20 seconds. Its frequency is _______
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Question 7 of 30
Q-7.In the sliding window method of flow control, the receiver window _______ size when an ACK is sent
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Question 8 of 30
Q-8.Which of the following is an error detection method?
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Question 9 of 30
Q-9.The MTSO can change the channel carrying a call through a process called _______.
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Question 10 of 30
Q-10.AN HDLC _______ station sends responses
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Question 11 of 30
Q-11.Section overhead in an STS-1 frame contains _______ octets.
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Question 12 of 30
Q-12.A _________ preamble is used to synchronize the receiver’s clock
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Question 13 of 30
Q-13.Devices in a star or tree topology are usually configured in a _______ relationship
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Question 14 of 30
Q-14.The HDLC _______ for acknowledgment.
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Question 15 of 30
Q-15.What is the class of the address 248.22.33.1?
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Question 16 of 30
Q-16.In its most popular implementation, the EIA-232 interface standard defines _______ wires for actual data transmission
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Question 17 of 30
Q-17.The performance of transmission media is often measured by _______
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Question 18 of 30
Q-18.Proprietary and non proprietary standards are both classified as _______ standards
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Question 19 of 30
Q-19.Sliding window ARQ is usually implemented as _______
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Question 20 of 30
Q-20.An acknowledgment at the PLP layer is encapsulated in _________ at the data link layer.
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Question 21 of 30
Q-21.In asynchronous serial transmission, if we are sending 100 Kbps, we send _______ characters per second.
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Question 22 of 30
Q-22.Long-range radio navigation uses frequencies in the _______ ranges.
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Question 23 of 30
Q-23.The maximum data rate of half duplex 64-QAM modem using a two-wire regular telephone line is ___________ bps
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Question 24 of 30
Q-24.Forty-five physical channels link _______ devices arranged in a mesh topology
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Question 25 of 30
Q-25.What is the major weakness of asynchronous TDM?
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Question 26 of 30
Q-26.In HDB3 encoding, a string of four consecutive 0s produces _______.
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Question 27 of 30
Q-27.The highest STS level has a data rate of _________ Mbps.
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Question 28 of 30
Q-28.Handoff is necessary when ________
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Question 29 of 30
Q-29.A class C address starts with the _________bit(s).
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Question 30 of 30
Q-30.If DQDB slots are generated on device X, then _______.
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