Data Communication and Networking – Data Link Layer – Data Link Control – Line Discipline MCQs

This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Data Link Layer – Data Link Control – Line Discipline”.
 

1
. _______ is a function of the data link layer.
  • Line discipline
  • Flow control
  • Error control
  • All of the above
2
. Line discipline is mainly a function of the _______ layer.
  • physical
  • data link
  • network
  • transport
3
. _______ determines which device can send
  • Line discipline
  • Flow control
  • Error control
  • All of the above
4
. _______ determines when a device can send.
  • Line discipline
  • Flow control
  • Error control
  • All of the above
5
. Which data link layer function answers the question: Who should send now?
  • line discipline
  • flow control
  • error control
  • session management
6
. ENQ/ACK is a _______ technique
  • line discipline
  • flow control
  • error control
  • session management
7
. Poll/select is a _______ technique.
  • line discipline
  • flow control
  • error control
  • session management
8
. _______ is a line discipline technique used when there is a dedicated link between the sender and the receiver
  • ENQ/ACK
  • Poll/select
  • Stop-and-wait
  • a or b
9
. Who initiates a session on an ENQ/ACK system?
  • either station
  • the primary
  • the secondary
  • none of the above
10
. A station on an ENQ/ACK system sends _______ frame to initiate transmission.
  • an ENQ
  • an ACK
  • a NAK
  • an EOT
11
. A station on an ENQ/ACK system sends _______ frame to indicate that it is ready to receive
  • an ENQ
  • an ACK
  • a NAK
  • an EOT
12
. A station on an ENQ/ACK system sends _______ frame to indicate that it is not ready to receive.
  • an ENQ
  • an ACK
  • a NAK
  • an EOT
13
. Transmission of data from a primary to a secondary first requires the primary to _______ the secondary
  • poll
  • select
  • inquire
  • acknowledge
14
. When a primary has data to send to a secondary, it sends a _______ frame to the secondary.
  • poll
  • select
  • inquire
  • acknowledge
15
. When a primary wants to receive data from a secondary, it sends a _______ frame to the secondary
  • poll
  • select
  • inquire
  • acknowledge
16
. In a system using the poll/select line discipline, the address field contains the address of _______
  • the recipient
  • the sender
  • the primary
  • the secondary
17
. If a secondary is ready to receive data from a primary, it returns _______ frame in response to the select frame.
  • a SEL
  • an ACK
  • a POLL
  • a NAK
18
. If a secondary has data to send to a primary, it returns _______ frame in response to the poll frame
  • a data
  • a SEL
  • an ACK
  • an EOT
19
. If a secondary has no data to send, it returns _______ frame in response to a poll frame.
  • a SEL
  • an ACK
  • a NAK
  • an EOT

 
 
You may be interested in:
Data Communication and Networking MCQs by Behrouz A Forouzan.
Computer Networking MCQs
Fundamental of Networking Online Tests
Data Communication and Networking Online Tests
Data Communication and Networking Short Questions Answers
Data Communication and Networking Tutorials and Study Notes