Latest Multiple Choice Questions of Data Communication

Computer GK Questions 

Q.21 In the current frequency assignments, how many frequency bands are there for the uplink frequencies?

(A) 16

(B) 8

(C) 4

(D) 2

Data Communication and Networking: MCQ-questions-for-data-communication-and-networking

Q.22 The bandwidth required to send 132 voice-grade channels by FDM on an international satellite system is….

(A) 500 MHz

(B) 10 MHz

(C) 1320 MHz

(D) 50 MHz

Q.23 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 fibre to the home

(D) is based on the use of satellites

Q.24 Communications protocols always have a ….

(A) set of symbols

(B) the start of the header

(C) the special Flag symbol

(D) BCC

Q.25 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

Q.26 If each character in an X MODEM block has an ASC II value of 50, what would be the value of the checksum added to the block?

(A) 50

(B) 23

(C) 41

(D) 25

Q.27 Under the Y MODEM protocol, block 0 is used to transport.

(A) error-recovery information

(B) 100 characters

(C) information about the file to be transferred

(D) 64 characters

Q.28 The second Y MODEM block used to transport an 1100-byte file would use data field of…

(A) 1024 characters

(B) 100 characters

(C) 128 characters

(D) 64 characters

Q.29 A streaming protocol….

(A) provides error detection

(B) does not provide error detection

(C) uses 64-byte blocks

(D) requires a manual setup’

Q.30 An example of a sliding windows protocol is….

(A) XMODEM

(B) YMODEM

(C) YMODEM-G

(D) WXMODEM