Data Communication & Network MCQs

Data Communication & Network MCQs

The following Data Communication & Network MCQs have been compiled by our experts through research, in order to test your knowledge of the subject of Data Communication & Network. We encourage you to answer these 20 multiple-choice questions to assess your proficiency.
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1: The wireless lan term for a collection of multiple basic service sets is ____.

A.   Multiple Service Set (MSS)

B.   Extended Service Set (ESS)

C.   Basic Service Set (BSS)

D.   Complex Service Set (CSS)

2: Stop-and-wait arq uses ___________ type of data flow.

A.   Full duplex

B.   Half duplex

C.   Simple half duplex

D.   Simple full duplex

3: The interval during which the signals propagate down the bus and back is the ____.

A.   Exponential backoff

B.   Attenuation

C.   Collision window

D.   Bounce window

4: A ________ is a collection of computers connected to one another or to a common connection medium.

A.   Network

B.   Analyzer

C.   PC connection

D.   None of these

5: A _____ is a hardware device that allows several nodes to share one communication channel.

A.   Database

B.   Controller

C.   Client system

D.   Multiplexer

A.   Bus

B.   Disk drive

C.   Control Unit

D.   Motherboard

A.   Hardware

B.   Software

C.   Printer

D.   Network

8: A ______ has a similar role to a hub.

A.   Ethernet Switch

B.   Bridge

C.   Router

D.   Repeater

9: A ________ sends data from one collision domain to another.

A.   Bridge

B.   Link

C.   Router

D.   Switch

10: A ________ topology uses more than one topology when building a network.

A.   Bus

B.   Hybrid

C.   Star

D.   Mesh

11: A ____ multiplexes 24 input channels together onto one high-speed telephone line.

A.   T-1 system

B.   SONET system

C.   SDH system

D.   Congruent system

12: The typical maximum distance between microwave towers is roughly ____ to 30 miles.

A.   3

B.   6

C.   8

D.   15

13: The most basic error-detection techniques are parity checks, which are used with ____ connections.

A.   Synchronous

B.   Asynchronous

C.   Statistical

D.   Fiber-optic

14: When a signal is amplified by an amplifier, the signal gains in ____.

A.   Decibels

B.   Hertz

C.   Bytes

D.   Watts

15: ____ technique is also known as disk mirroring.

A.   RAID-0

B.   RAID-1

C.   RAID-3

D.   RAID-5

16: _______ is a term relating to sending data to a satellite.

A.   Downlink

B.   Modulate

C.   Demodulate

D.   Uplink

17: A ____ is a device that interconnects two segments of local area networks and acts as a filter.

A.   ​router

B.   ​satellite

C.   ​switch

D.   ​hub

18: According to one rule of thumb, ______ percent of circuit loading information is easy to gather.

A.   50

B.   25

C.   80

D.   19

E.   20

19: In a payback analysis, the ____ cost is a one-time cost that occurs in year 0.

A.   Operation and Maintenance

B.   Time-Adjusted

C.   Development

D.   Cumulative Time-Adjusted

20: A direct connection between a terminal and a mainframe computer is a ____ connection.

A.   Multipoint

B.   Point-to-point

C.   Single-point

D.   Direct-point

21: An arithmetic checksum _______ the individual characters to be transmitted.

A.   Adds

B.   Inverts

C.   Multiplies

D.   Divides

22: At the end of the data character, one or two ____ bits are added to signal the end of the frame.

A.   Start

B.   Check

C.   Parity

D.   Stop

23: A new parameter that might have an impact on metropolitan area design is the ____.

A.   Availability

B.   Tangible

C.   Failover time

D.   Sniffer