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Communication Systems Revision Questions

Authored by M Azer

Computers

12th Grade

Used 1+ times

Communication Systems Revision Questions
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21 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is meant by the process of encryption?

Encoding of the data so it cannot be used by unauthorised users

Manipulation of the data to make the transmitted or stored file smaller

Encoding of the data so it is not allowed to be accessed by unauthorised users

Manipulation of the data to make it easier to back up and restore the data when required

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the name of the simplest device that connects two similar network topologies together?

Bridge

Gateway

Router

Server

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the purpose of a modem?

To connect a computer to a phone line

To ensure that a digital transmission from a computer along phone lines is secure

To direct the message or file from a computer to the correct DNS server for transmission to the correct node

To modulate and demodulate the digital signal from the computer into an analogue form for transmission and back again

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What name is given to this type of diagram?

Funding management plan

Data flow diagram

Gantt chart

Decision table

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

It is determined that the Windows and doors, Plumbing and Electrical can all be completed at the same time. If this occurs then what will be the duration of the whole project?

6.5 weeks

7 weeks

7.5 weeks

8 weeks

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mustgow High School is implementing a new attendance system. The new system is used to record absences for the maths department’s classes until detected problems have been fixed, and then the new system is implemented across the school.

What method of implementation is being used?

Direct

Parallel

Pilot

Phased

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the main purpose of a developer using systems modelling tools (such as DFDs and data dictionaries)?

To allow them to better understand the existing and proposed system and to document it for other members of the development team to refer to

To allow them to conform to the expected standards of the company to ensure that the system is documented as expected

To provide extra material for the training of participants in the new system, so they can see how it works

To allow better communication with the development team and future clients to market the product better

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