Computer Terms Flashcards

1
Q

What do the letters “WIMP” stand for?

A

Windows, Icons, Menus, Pointers.

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2
Q

What does the term “Peer-to-peer network” mean?

A

Peer-to-peer network is a network that simply connects computers. In a peer-to-peer network, no single computer is in charge; each computer is “on the network,” just like any other computer.

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3
Q

What do the letters “HCI” stand for?

A

Human Computer Interface

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4
Q

In terms of network management what does the term “auditing” refer to?

A

Keeping logs of the network activity.

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5
Q

What factors influence choosing a network for a company?

A
  • cost of network
  • size of organisation
  • how the system will be used
  • existing systems
  • performance required
  • security issues
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6
Q

What do the letters “FTP” stand for?

A

“File Transfer Protocol.”

It is a common method of transferring files via the Internet from one computer to another.

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7
Q

What do the letters “GUI” stand for?

A

Graphical User Interface

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8
Q

Give an example of a “command line Interface”?

A

MS DOS

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9
Q

In terms of network management what does the term “disaster planning” refer to?

A

The backup and restoration of a network’s data in the event of a complete failure of that network.

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10
Q

What does the term “client server network” mean?

A

In a client-server network one main computer runs special server software, acting as the network boss.

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11
Q

What are the main principles of the “Data Protection Act”?

A

The eight principles require personal data to be:

  • Processed fairely and lawfully
  • Obtained for and used for specific and lawful purposes
  • Relevant , adequate and not excessive
  • Accurate, up-to-date (if necessary)
  • Only kept as long as needed
  • Held in accordance with the rights of the person to whom the data refers
  • Kept securely
  • Only transferred to countries that offer adequate date protection.
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12
Q

Who is the Data Protection Act set out to protect?

A

The main aim of the Data Protection Act is to protect the individual.

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13
Q

What is meant by parallel running whaen implementing a new computer system?

A

Parallel running describes a period of time where a new system is run alongside the original system. During this period problems can be ironed out, and if there are any problems with the new system the old system can be used as a backup. Parallel running also allows users time to familiarise themselves with (and gain confidence in using) the new system, thus resulting in minimum disruption to the organisation.

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14
Q

What are “Gantt charts”?

A

Gantt charts are are useful tools for planning and scheduling projects. They enable project managers to:

  • Plan how long a project should take
  • Determine the order in which activities need to take place
  • Review what should have been achieved by agreed deadlines
  • see the relationship between one activity and another
  • allocated staffing and resourcing across and between activities
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15
Q

Name the stages of the system development life cycle and and explain why it is described as a cycle.

A

There are nine stages to the life cycle. They are:

  • Definition
  • Investigation and Analysis
  • Design
  • Implementation
  • Testing
  • Installation
  • Documentation
  • Evaluation
  • Maintenance

The outcomes of each satge provide a starting point for the next stage. These outcomes are tested and validated. If the outcomes are found to be faulty or incomplete the process returns to the beginning of the stage. This can happen at the end of any of the six stages - the process loops until the outcomes are verified.

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16
Q

What is the role of the system analyst in the development of a solution to an identified problem?

A

The system analyst leads the development of the process and is involved in all stages. The analyst will liaise with the client, review their needs and lead on to the development of the feasibility study and the specification. The development of the detailed specification will support the programming team and enable the analyst to play a key role in measuring the performance of the developed system against the user requirements during alpha testing.

17
Q

In terms of the system development life cycle describe a Data Flow Diagram (DFD)

A

DFD are diagramatic representations of the relationaship between the systems that manage the functions of an organisation and the way the data moves around the organisation. There are 4 elements.

Entities - an entity refers to an item that has data attached to it. The entity “students” will hold data about students.

Processes - these are the things the system will do in order to organise data into formatssuitable for the user. In a timetabling system one process could be the allaocation of teacher to classes

Data Flow - From the source of the data following the direction of flow to the destination of the data.

Data Storage - the location wher data is held such as student data table or classroom data table.

18
Q

What does the term Disaster Recovery mean?

A

The threats.

Users must recognise the threats to their systems, information and data.

  • Fire
  • Flood
  • Theft
  • Earthquake
  • Malicious damage
  • Hacking
  • Terrorism
  • War
  • Communication breakdown
  • Power failure
  • Hardware failure
  • Software faults

A Disaster recovery plan provides a method to be used by an organisation following a disaster so that the organisation can recover in the shortest time possible.

19
Q

Explain the stages of a Disaster Recovery Plan.

A

Risk analysis.
The risks of an event happening must be evaluated. In the UK an earthquake is not a high risk, while flooding and fire are high risks. The cost of the threat becoming a reality, the cost of recovering from it and the potential for it to happen are measured.

Disaster recovery plan.
Provides for the method to be used following a disaster for the organisation to recover. Large organisations now have special offices furnished with all the equipment necessary and data backups should they loose their existing offices. They have recruited staff that are paid a retainer, who will be able to take the jobs should the existing staff become unavailable as a result of a threat.

Other organisations have plans that are within their budget to enable continuation following a threat happening.

Contingency plan.

  • Identify what could go wrong.
  • Identify what should be done if it does.