Data Communication and Networking MCQs

121.

When more computers are connected at one place, it is called

   A.) LAN
   B.) WAN
   C.) Infinite 
   D.) WON

Answer: Option 'A'

LAN

122.

Which of the following is an example of a bounded medium?

   A.) coaxial cable
   B.) wave guide
   C.) fiber optic cable
   D.) all of these

Answer: Option 'D'

all of these

123.

Multiple repeaters in communication satellites are called.

   A.) detector
   B.) modulator
   C.) transponders
   D.) stations

Answer: Option 'C'

​transponders

124.

The maximum modem operating rate that can be transported by ADPCM is ______.

   A.) 300 bps
   B.) 1200 bps
   C.) 4800 bps
   D.) 9600 bps

Answer: Option 'C'

4800 bps

125.

Which layer os international standard organization OSI model is responsible for creating and recognizing frame boundaries?

   A.) physical layer
   B.) data link layer
   C.) transport layer
   D.) network layer

Answer: Option 'B'

data link layer

126.

In the X MODEM protocol, the sender waits for what character from the receiver before beginning transmission?

   A.) WACK
   B.) ACK
   C.) RVL
   D.) NAK

Answer: Option 'D'

NAK

127.

What frequency range is most affected by fog and precipitation?

   A.) 4GHz to 6GHz
   B.) 6GHz to 10GHz
   C.) above 10GHz
   D.) 2GHz to 4GHz

Answer: Option 'C'

​above 10GHz

128.

The 32-bit internet address 10000000 000010100 0000010 00011110 will be written in dotted decimal notation as __________.

   A.) 148.20.2.30
   B.) 164.100.9.61
   C.) 210.20.2.64
   D.) 128.10.2.30

Answer: Option 'D'

128.10.2.30

129.

Avalanche photodiode receiver can detect bits of transmitted data by receiving.

   A.) 1 Photon
   B.) 100 photons
   C.) 10 photons
   D.) 200 photons

Answer: Option 'D'

200 photons

130.

The capability to provide consumers with video-on-demand.

   A.) will-occur by the year 2000.
   B.) depends on the results of field trials
   C.) is based on fiber to the home
   D.) is based on the use of satellites

Answer: Option 'C'

​is based on fiber to the home

131.

Synchronous protocols.

   A.) transmit characters one at a time.
   B.) allow faster transmission than asynchronous protocols do.
   C.) are generally used by personal computers.
   D.) all of these

Answer: Option 'B'

allow faster transmission than asynchronous protocols do.

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