1. How many fields frame in High-level Data Link Control (HDLC) may contain?
(A) Three fields
(B) Four fields
(C) Five fields
(D) Six fields
2. _________ control refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgment.
(A) Flow
(B) Error
(C) Transmission
(D) None of the above
3. _________ control refers to methods of error detection and correction.
(A) Flow
(B) Error
(C) Transmission
(D) None of the above
4. _________ control in the data link layer is based on automatic repeat request, which is the retransmission of data.
(A) Flow
(B) None of the above
(C) Transmission
(D) Error
5. ARQ stands for _________.
(A) Automatic repeat quantization
(B) Automatic repeat request
(C) Automatic retransmission request
(D) Acknowledge repeat request
6. Both Go-Back-N and Selective-Repeat Protocols use a _________.
(A) Sliding frame
(B) Sliding packet
(C) Sliding window
(D) None of the above
7. Data link control deals with the design and procedures for _________ communication.
(A) Node-to-node
(B) Host-to-host
(C) Process-to-process
(D) None of the above
8. HDLC is an acronym for _________.
(A) High-duplex line communication
(B) Host double-level circuit
(C) Half-duplex digital link combination
(D) High-level data link control
9. In _________ framing, there is no need for defining the boundaries of frames.
(A) None of the above
(B) Variable-size
(C) Standard
(D) Fixed-size
10. In _________ protocols, we use _________.
(A) None of the above
(B) Character-oriented; bit stuffing
(C) Bit-oriented; character stuffing
(D) Character-oriented; byte stuffing
11. In _________, the configuration is balanced. The link is point-to-point, and each station can function as a primary and a secondary.
(A) ABM
(B) NRM
(C) ARM
(D) NBM
12. In a _________ protocol, the data section of a frame is a sequence of bits.
(A) Byte-oriented
(B) Bit-oriented
(C) Either (a) or (b)
(D) None of the above
13. In a _________ protocol, the data section of a frame is a sequence of characters.
(A) Bit-oriented
(B) None of the above
(C) Either (a) or (b)
(D) Character-oriented
14. In PPP, _________ is a simple authentication procedure with a two-step process:
(A) NCP
(B) PAP
(C) CHAP
(D) LCP
15. In Selective Repeat ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the receive window must be _________.
(A) 15
(B) 31
(C) 16
(D) 1
16. In the _________ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame.
(A) Simplest
(B) Stop-and-Wait
(C) Go-Back-N ARQ
(D) Selective-Repeat ARQ
17. Stop-and-Wait ARQ is a special case of Go-Back-N ARQ in which the size of the send window is 1.
(A) 2
(B) None of the above
(C) 8
(D) 1
18. The _________ Protocol has flow control, but not error control.
(A) Simplest
(B) Stop-and-Wait
(C) Go-Back-N ARQ
(D) Selective-Repeat ARQ
19. The _________ Protocol has both flow control and error control.
(A) Stop-and-Wait
(B) Both (b) and (c)
(C) Selective-Repeat ARQ
(D) Go-Back-N ARQ
20. The Simplest Protocol and the Stop-and-Wait Protocol are for _________ channels.
(A) Noisy
(B) Neither (a) nor (b)
(C) Either (a) or (b)
(D) Noiseless