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Free computer quiz Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. Which of the following types of channels move data relatively slowly?
(a)
Narrow band channel
(b)
Broad band channel
(c)
Voice band channel
(d)
Wide band channel
2. In a synchronous modem, the digital to analog converter sends signal to the
(a)
Equalizer
(b)
Terminal
(c)
Transmission line
(d)
Modulator
3. What is the main purpose of a data link content monitor?
(a)
Measurement of bit error rate
(b)
Determine the type of transmission used in a data link
(c)
Detect problems in protocols
(d)
Determine the type of switching used in a data link
4. One important characteristic of LAN is
(a)
Application independent interfaces
(b)
Parallel transmission
(c)
Low cast access for low bandwidth channel
(d)
Unlimited expansion
5. Multiple repeaters in communication satellites are called
(a)
Stations
(b)
Transponders
(c)
Modulator
(d)
Detector
6. Most data communication involving telegraph lines use
(a)
Delayed service
(b)
Simplex lines
(c)
Wide band channels
(d)
Narrow band channel
7. A router operates at the
(a)
Application layer
(b)
Data link layer
(c)
Segmentation layer
(d)
Network layer
8. In OSI network architecture, the routing is performed by
(a)
Session layer
(b)
Transport layer
(c)
Data link layer
(d)
Network layer
9. A communication device that combines transmissions from several I/O devices into one line is
(a)
Multiplexer
(b)
Modifier
(c)
Full duplex line
(d)
Concentrator
10. RS-232, RS-449, RS-530, V-24 and X-21 are examples of
(a)
Standards for end-to-end performance of data communication systems
(b)
Two methods of error detection and correction
(c)
Standards for various types of transmission channels
(d)
Standards for interfaces between terminals and modems
