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WorksheetsIntoduction to DCS 2018-19
Total questions: 20
Worksheet time: 10mins
The information to be communicated in a data communications system is the _______.
Medium
Message
Protocol
Transmission
This was the first network.
INTERNET
INTRANET
ARPANET
CSNET
Communication between a computer and a keyboard involves ______________ transmission.
Simplex
Half-duplex
Full-duplex
automatic
_______ refers to two characteristics: when data should be sent and how fast it can be sent.
Timing
Syntax
Semantics
None of the choices
________ is a collection of many separate networks.
A LAN
A WAN
AN INTERNET
None of these
_____ refers to the physical or logical arrangement of a network.
Mode of operation
Data flow
Topology
network
In _______ transmission, the channel capacity is shared by both communicating devices at all times
Simplex
Half-duplex
Full-duplex
None of these
Frequency of failure and network recovery time after a failure are measures of the _______of a network.
Security
Reliability
Performance
Fesibility
_______ refers to the structure or format of the data, meaning the order in which they are presented.
Timing
Syntax
Semantics
None of these
The _______ is the physical path over which a message travels.
protocol
signal
medium
transmitter
An unauthorized user is a network _______ issue.
reliability
security
performance
all of this
A ________ is a set of rules that governs data communication.
forum
standard
protocol
none of these
In a ______ connection, two and only two devices are connected by a dedicated link.
point-to-point
multipoint
point-to-point or multipoint
None of these
Which topology requires a central controller or hub?
Bus
Star
Ring
Mesh
_______ is the protocol suite for the current Internet.
TCP/IP
NCP
ACM
UNIX
_______ are special-interest groups that quickly test, evaluate, and standardize new technologies.
Standard organization
Forums
Regulatory agencies
All of these
________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.
Timing
Synax
Semantics
None of these
A _______ connection provides a dedicated link between two devices.
multipoint
primary
secondary
point-to-point
The largest geographic area a wide network can span is ___________
town
state
country
the world
In a fully connected mesh topology with six computers, we need ______ links.
6
36
15
25
