computing

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  • Created by: jaydeep
  • Created on: 23-04-15 22:00
What is a computer system
A computer systme is a collection of hardware and software the work together to achieve some data processing task
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What is a network topology
A layout of the network
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What is the use of testing, what are the cons of it and two types of testing
Testing is used to find errors in a code. It is very expensive and time consuming to test the whole code which means that there are bound to be errors in it and the software is very complex- alpha and beta testing
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Why are some instructions stored as hexadecimal
Since it is straightforward to convert, more shorter= memorable, susceptible to errors and quick to enter
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What is the importance of a computer system?
faster access to information, new ways to do busness, new ways of communication, better decision making and 24/7
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What are standards
are a set of rules and requirments within and for a nprogram and therefore is reliable
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What is reliablitiy
The probability that the computer will be destroyed or malfunction hence we need to be able to trust it since it can cause fatal errors e.g aircraft accidents
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Why is network topology used
Used to connect computers together to share information and resources
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What is IP addressing
unique number to a computer known as a network protocol
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What is a server
central computer that stores all files and data
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In which network topology are terminators used and why
Bus network since they relect impulses back on the cable if no accessed by computer however these cause major traffic and congestion therefore delaying time
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What is a network protocol
set of rules that are used to allow devices to communicate
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What is the abbrevation of Media Accesss Control and why is it used
MAC it is used to allow new devices to be added to a network and is a physical interface that connects to network
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What is the purpose of DNS
DNS servers convert domain name into numerical IP so that it is more memorable
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What is encryption
To convert data in a different format that would need an encritographic key to bWhat is compression and e read - method of security
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What is compression and describe one
Compression is reducing a file size.Lossless does not store repeated detail however it does not loose any information whereas Lossy removes some of the data from file that cannot be recovered
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ADV of using Client server
Security is high, easier to perform software updates, faster performance since no data collisions and easier to perform backups
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Role of routers
Ensure no information is lost or inthe wrong area and prevent large amounts of data from clogging, ensure data packets get delivered and reduce the need for cables
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Other cards in this set

Card 2

Front

What is a network topology

Back

A layout of the network

Card 3

Front

What is the use of testing, what are the cons of it and two types of testing

Back

Preview of the front of card 3

Card 4

Front

Why are some instructions stored as hexadecimal

Back

Preview of the front of card 4

Card 5

Front

What is the importance of a computer system?

Back

Preview of the front of card 5
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