Data Communication and Networking – Frame Relay MCQs

This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Frame Relay ”.
 

1
. The address field of a frame is 01101000 00001111. What is the DLCI?
  • 256
  • 416
  • 1024
  • none of the above
2
. The address field of a frame is 00000000 00011111. What is the DLCI?
  • 256
  • 416
  • 1
  • none of the above
3
. The address field of a frame is 00000100 00011111. What is the DLCI?
  • 256
  • 17
  • 1
  • none of the above
4
. The address field of a frame is 00000100 00011001. There is congestion in the _______ direction.
  • forward
  • backward
  • both
  • no
5
. The address field of a frame is 00000100 00010101. There is congestion in the _______ direction.
  • forward
  • backward
  • both
  • no
6
. The address field of a frame is 00000100 00010111. The frame is _______ for discarding.
  • eligible
  • not eligible
  • conditionally eligible
  • we cannot say
7
. Congestion avoidance in Frame Relay is done by the_________ and _______ bits.
  • FECN; DA
  • BECN; DA
  • BECN; FECN
  • none of the above
8
. There is no congestion between DTE A and DTE B. The packet going from A to B has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
9
. There is no congestion between DTE A and DTE B. The packet going from B to A has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
10
. There is congestion between DTE A and DTE B in the direction A to B. The packet going from A to B has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
11
. There is congestion between DTE A and DTE B in the direction A to B. The packet going from B to A has BECN bit _______ and FECN bit _________
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
12
. There is congestion between DTE A and DTE B in the direction B to A. The packet going from A to B has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
13
. There is congestion between DTE A and DTE B in the direction B to A. The packet going from B to A has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
14
. There is congestion between DTE A and DTE B in both directions. The packet going from A to B has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
15
. There is congestion between DTE A and DTE B in both directions. The packet going from B to A has BECN bit _______ and FECN bit _________.
  • 0; 0
  • 0; 1
  • 1; 0
  • 1; 1
16
. A switch in Frame Relay uses the _______ algorithm to change bursty data to fixed-rate data.
  • token bucket
  • leaky bucket
  • both a and b
  • none of the above
17
. A user access rate is 64 Kbps. The user _______________.
  • must never exceed this rate
  • can exceed this rate occasionally
  • must not exceed this rate if there is congestion
  • none of the above
18
. A user CIR is 64 Kbps. The user _______________.
  • must never exceed this rate
  • can exceed this rate
  • can exceed this rate occasionally if the average is rate is 64 Kbps
  • none of the above
19
. The CIR is _______ the access rate.
  • greater than
  • less than
  • equal to
  • none of the above
20
. The Bc is _________ Be.
  • greater than
  • less than
  • equal to
  • none of the above
21
. If the data sent during a period of T seconds is less than Bc, the user data ___________
  • will never be discarded
  • will be discarded if there is congestion
  • will be discarded
  • none of the above
22
. If the data sent during a period of T seconds is greater than Bc but less than Bc + Be, the user data ___________.
  • will never be discarded
  • will be discarded if there is congestion
  • will be discarded
  • none of the above
23
. If the data sent during a period of T seconds is greater than Bc + Be, the user data ___________
  • will never be discarded
  • will be discarded if there is congestion
  • will be discarded
  • none of the above
24
. In the extended address format, the addresses in the Frame Relay can be______ bytes.
  • 2
  • 2 or 3
  • 2, 3, or 4
  • none of the above
25
. In a 3-byte address, the DLCI subfield is _______ bits.
  • 6
  • 10
  • 16
  • none of the above
26
. In a 4-byte address, the DLCI subfield is _______ bits.
  • 6
  • 23
  • 16
  • none of the above
27
. In a two-bytes address, the value of the EA fields are_______ and _______ respectively.
  • 0; 0
  • 0; 1
  • 1; 0
  • none of the above
28
. In a three-bytes address, the value of the EA fields are_______, _______ and _______ respectively.
  • 0; 0; 0
  • 0; 1; 0
  • 0; 0; 1
  • none of the above
29
. In a four-bytes address, the value of the EA fields are_______, _______ and _______ respectively.
  • 0; 0; 0; 0
  • 0; 1; 0; 1
  • 0; 0; 0; 1
  • none of the above
30
. Frame Relay is designed mostly for ________.
  • fixed-rate data
  • bursty data
  • voice grade data
  • none of the above
31
. Bandwidth on demand means that the user has ______.
  • fixed-rate data
  • bursty data
  • voice grade data
  • none of the above
32
. A company with 8 LANs needs _________ T-1 lines to connect them together.
  • 15
  • 56
  • 27
  • none of the above
33
. Virtual circuit identifiers in Frame Relay operate in the _________ layer.
  • network
  • data link
  • transport
  • none of the above
34
. A virtual circuit identifier in Frame Rely is called a ___________.
  • VCI
  • VPI
  • DLCI
  • none of the above
35
. In a PVC connection, DLCIs are assigned _________.
  • temporarily
  • permanently
  • either a or b
  • neither a nor b
36
. In an SVC connection, DLCIs are assigned __________.
  • temporarily
  • permanently
  • either a or b
  • neither a nor b
37
. To create an SVC connection, the sending device issues a _______ frame.
  • setup
  • connect
  • release
  • release complete
38
. To accept an SVC connection, the receiving device issues a _______ frame.
  • setup
  • connect
  • release
  • release complete
39
. To terminate an SVC connection, the sending device issues a _______ frame.
  • setup
  • connect
  • release
  • release complete
40
. To confirm the termination of an SVC connection, the receiving device issues a _______ frame.
  • setup
  • connect
  • release
  • release complete
41
. Frame Relay uses a simplified version of HDLC called __________.
  • HDFR
  • LAPF
  • FRLAP
  • none of the above
42
. LAPF is a _________ protocol.
  • bit-oriented
  • byte-oriented
  • character-oriented
  • none of the above
43
. Which of the following fields from HDLC is missing in LAPF?
  • address
  • flag
  • control
  • FCS
44
. What is the value of the flag field in HDLC?
  • 01010101
  • 01111110
  • 10000001
  • none of the above
45
. In the non-extended format, the address field in the Frame Relay frame is _______ bits long.
  • 8
  • 16
  • 24
  • none of the above
46
. The DLCIs in Frame Relay are defined as part of the _________ field.
  • control
  • address
  • flag
  • none of the above
47
. A DLCI in Frame Relay is only _______ bits.
  • 8
  • 10
  • 6
  • none of the above
48
. The DLCI field in Frame Relay is divided into two subfields of _______ and _______ bits respectively.
  • 5; 5
  • 4; 6
  • 6; 4
  • none of the above
49
. The DLCI field in Frame Relay can define up to _________ DLCIs.
  • 512
  • 256
  • 1024
  • none of the above

 
 
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