Q.1 The information to be communicated in a data communications system is the _______.
(1) Medium
(2) Protocol
(3) Message
(4) Transmission
(5) Topology
Q.2 Frequencies of failure and network recovery time after a failure are measures of the _______ of a network.
(1) Performance
(2) Reliability
(3) Security
(4) Feasibility
(5) None of these
Q.3 An unauthorized user is a network _______ issue.
(1) Performance
(2) Reliability
(3) Security
(4) Portability
(5) All the above
Q.4 Which topology requires a central controller or hub?
(1) Mesh
(2) Star
(3) Bus
(4) Ring
(5) Distributed
Q.5 Which topology requires a multipoint connection?
(1) Mesh
(2) Star
(3) Bus
(4) Ring
(5) Tree
Q.6 Communication between a computer and a keyboard involves ______________ transmission.
(1) simplex
(2) half-duplex
(3) full-duplex
(4) automatic
(5) one way
Q.7 A television broadcast is an example of _______ transmission.
(1) simplex
(2) half-duplex
(3) full-duplex
(4) automatic
(5) None of these
Q.8 A _______ connection provides a dedicated link between two devices.
(1) point-to-point
(2) Multipoint
(3) Primary
(4) Secondary
(5) 1 and 3
Q.9 In a _______ connection, more than two devices can share a single link.
(1) point-to-point
(2) multipoint
(3) primary
(4) secondary
(5) None of these
Q.10 Operating system software ________.
(1) is a combination of hardware and software that works together to allow computers to exchange data.
(2) is network security hardware that prevents unauthorized network access.
(3) is software that enables the user to communicate with the computer.
(4) is a series of related web pages.
(5) is software that enables the user to communicate with the Modem.
Answers
Q.1.(3) The information to be communicated in a data communications system is the message.
Q.2. (2) Frequency of failure and network recovery time after a failure are measures of the reliability of a network.
Q.3.(3) An unauthorized user is a network security issue.
Q.4. (2) Star topology requires a central controller or hub.
Q.5.(3) Bus topology requires a multipoint connection.
Q.6.(1) Communication between a computer and a keyboard involves simplex transmission.
Q.7. (1) A television broadcast is an example of simplex transmission.
Q.8. (1) A point to point connection provides a dedicated link between two devices.
Q.9.(2) In a multipoint connection, more than two devices can share a single link.
Q.10.(3) Operating system software is software that enables the user to communicate with the computer.
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