Data Communication and Networking MCQs

M

Mr. Dubey • 51.72K Points
Coach

Q 41. HDLC is an acronym for _______.

(A) High-duplex line communication
(B) High-level data link control
(C) Half-duplex digital link combination
(D) Host double-level circuit

M

Mr. Dubey • 51.72K Points
Coach

Q 42. For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed.

(A) exactly 10
(B) less than 10
(C) more than 10
(D) none of the above

M

Mr. Dubey • 51.72K Points
Coach

Q 43. ARQ stands for _______.

(A) Automatic repeat quantization
(B) Automatic repeat request
(C) Automatic retransmission request
(D) Acknowledge repeat request

M

Mr. Dubey • 51.72K Points
Coach

Q 44. In Go-Back-N ARQ, if frames 4, 5, and 6 are received successfully, the receiver may send an ACK _______ to the sender.

(A) 5
(B) 6
(C) 7
(D) any of the above

M

Mr. Dubey • 51.72K Points
Coach

Q 45. In a Go-Back-N ARQ, if the window size is 63, what is the range of sequence numbers?

(A) 0 to 63
(B) 0 to 64
(C) 1 to 63
(D) 1 to 64

M

Mr. Dubey • 51.72K Points
Coach

Q 46. A timer is set when _____________is sent.

(A) Packet
(B) ACK
(C) NAK
(D) All

M

Mr. Dubey • 51.72K Points
Coach

Q 47. Flow control is needed to prevent

(A) Bit errors
(B) Overflow of sender buffer
(C) Overflow of receiver buffer
(D) Collision

M

Mr. Dubey • 51.72K Points
Coach

Q 48. When a primary device wants to send data to a secondary device, it needs to first send _______ frame.

(A) ACK
(B) Poll
(C) SEL
(D) ENQ

M

Mr. Dubey • 51.72K Points
Coach

Q 49. Regulation of the rate of transmission of data frames is known as

(A) Line discipline
(B) Data rate control
(C) Flow control
(D) Switch control

M

Mr. Dubey • 51.72K Points
Coach

Q 50. In sliding window, if the window size is 63, what is the range of sequence numbers?

(A) 0 to 63
(B) 0 to 64
(C) 1 to 63
(D) 1 to 64

Download our easy to use, user friendly Android App from Play Store. And learn MCQs with one click.

Image