Computing Systems - Higher
About this set
Created by:
euan on November 17, 2009
Subjects:
higher computing, computing, computers, networking, spanish, history, capitals, states and capitals
Description:
Revision material for Scottish Higher Computing - Topic 1 - Computer Systems
Classes:
Higher Computing, The Mr Hendry Appreciation Society
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57 terms
Terms | Definitions |
|---|---|
 4294967296 | What is the largest positive integer that can be represented by 32 bits? |
| 11011000 | Convert the number 216 into to 8 bit binary code |
| Easy to use | Why do computers use a binary representation to store information? |
| 11011001 | What is -39 in 8 bit binary code? |
| Can represent non-latin based languages | What is the main advantage of UNICODE over ASCII code? |
| Resolution | What does the number of pixels refer to on a computing screen? |
| 0.08 | How musch memory is required to store a bitmapped image, 32 X 20 inches in kilobytes (to 1 d.p)? |
| 2.25 | How much memory will a image of 24 colours, 1024 X 768 display take up in megabytes (to 2 d.p)? |
| Vector | What type of image is resolution independant? |
| 65536 | How many colours can be represented using a pixel depth of 16-bits? |
| Control Unit, Arithmatic Logic Unit, Registers | Name the three parts of the processor? |
| Control Unit | What part of the processor manages the execution of intructions? |
| To transfer data to and from the processor | What is the main function of the data bus? |
| Bi-directional | The system bus can work in both directions. It is ... |
| 16777216 | How many memory locations has a 24-bit address bus |
| Uni-directional | The address bus can only send information in one direction. It is ... |
| 128 | What is the maximum addressable storage on a system with a 16-bit data bus and 16-bit data bus in kilobytes? |
| Cache memory | The type of memory with the fastest access is ... |
| RAM | Memory which is volitile is ... |
| Analogue to Digital Converter | What does ADC stand for in peripheral terms? |
| User name and password | Usually, to join a network you need a ... |
| USB pen | An example of a direct access device is a ... |
| Have many devices communicating together | An interface allows the user to ... |
| Internetwork | Connecting two computer networks together creates an ... |
| Distance | The type of network required is dependant on what factor? |
| Network Interface Card | What is required to connnect to a network? |
| Only one or two people have control over the network | A client - server network is ... |
| Everyone has equal control of the network | A peer to peer network is ... |
| The arrangement of computers to form a network | What describes a network topology? |
| Bus, Star, Ring, Mesh | Name the four types of network topology? |
| Star | What type of network topology connects all the nodes to one central node? |
| Security | What is the main downfall of a peer to peer network? |
| Thin Client | What term can be used to describe a workstation with a low specifiction? |
| Hub | What piece of network hardware recieves a signal and sends the signal to all the other attached nodes? |
| Switch | What piece of network hardware divides the network up into collision domains? |
| They route packets only to required nodes, unlike a hub which sends the packet to all nodes on the network | What is the main advantage of a switch compared to a router? |
| Link networks to the internet | Routers can be used to ... |
| Network Interface Card | What does the term "NIC" stand for? |
| To allow the user to access the World Wide Web | What is the main function of a browser? |
| It decreases | What happens to the bandwith of a file if it is compressed using data compression? |
| Wireless Application Protocol | What is the software a mobile phone uses to access the internet? |
| Virus | What is the piece of programming code that causes some unexpected and usually undesirable event in a computer system? |
| Proxy Server | What piece of software can be set to deny access to web pages or news groups which contain offensive, violent or pornographic material? |
| The Computer Misuse Act (1990) | If someone uses a computer to damage or steal unauthorized data they are breakeing which act? |
| The Copyright Designs and Patents Act (1988) | What act prevents the user copying software, images or data without permission from the creator? |
| The Data Protection Act (1998) | What act describes the duties and responsibilities of those holding data on individuals? |
| Using a hub or router | Name two ways packets can be sent round a network? |
| Operating System | What piece of software provides the user with a means of operating the computer? |
| Command Line Interface | What interface is a mechanism where the user is required to type commands to the system? |
| Graphical User Interface | What type of interface is a way where the user is presented with a series of graphical images and controls the operation of the computer by interacting in some way with those graphics? |
| A Process | What is the definintion of a program in execution? |
| Utility Programs | What name is given to a group of programs which are used to enhance the operating system? |
| A disk defragmentor | An example of a utility program is ... |
| Multimedia | The combined use of video, text, sound and graphics can be defined as ... |
| File Virus | What type of viruses attach themselves to program files such as .exe or .com files? |
| Trojan Horse | What type of virus is a program where harmful code is contained inside another code which can appear to be harmless |
| Anti-virus software | What type of software is used to prevent the spread of small, usually malignant programs that spread amongst machines using a similar approach to that used by biological viruses. |
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