PPSC Computer Science Chapter 12 Computer Networking Online Test With Answers

PPSC Computer Science Chapter 12 Computer Networking Online Test

Sr. # Questions Answers Choice
1 A protocol is a set of rules governing a time sequence of events that must take place. Between peers Between an interface Between moderns Across an interface
2 Which of the following transmission system provide the highest data rate to in individual device. Computer bus Telephone lines Voice and mode Lease lines
3 A data terminal serves as an Effector Sensor Both a and b Neither a nor b
4 The channel in the data communication model can be. Postal mail services Telephone lines radio lines Any of the above
5 In a synchronous modem the receive equalizer is known as Adaptive equalizer Impairment equalizer Statistical equalizer Compromise equalizer
6 The receive equalizer reduces delay distortions using a Tapped delay lines Gearshift Descrambler Difference engine
7 Terminal are required for Real time batch processing and time sharing. Real time time sharing and distributed message processing. Real time distributed processing and manager inuiry Real time time sharing and message switching
8 An example of digital rather than analog communication is DDD DDS DDT WATS
9 What is the main difference between DDCMP and SDLC. DDCMP does not need spectral hardware to final the beginning of a message DDCMP has a message header SDLC has a IP address SDLC does not use CRC
10 Number of bits per symbol used in biodot code is. 5 7 8 9
11 An example of an analog communication method is. Laser beam Micro wave Voice grade telephone line All of the above
12 Data communications monitors available on the software marked include. ENVIRON/1 TOTAL BPL Telnet
13 While transmitting odd panty coded symbols the number of zeros in each symbol is. Odd Even a and b both Un known
14 In communication satellite multiple repeaters are known as Detector Modulator Stations Transponders
15 A examples of medium speed switched communications service is Series 1000 Data phone 50 DDD All of above
16 Communication circuits that transmit data in both directions but not a the same time are operating in A simplex mode A half duplex mode A full duplex mode An asynchronous mode
17 Avalanche photodiode receivers can detect bits of transmitted data by receiving. 100 photons 200 photons 2000 photons 300 photons
18 the loss in signal power as light travels donw the fiber is called. Attenuation Progragation scathering Interruption
19 the transmission signal coding method of TI carrier is called Bipolar NRZ Binary Manchester
20 The transmission signal coding method of TI carrier is called. Bipolar NRZ Manchester Binary
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