Flashcards
Computer Science (CPU Architecture)
Cards in this deck (35)
- 1What does CPU stand for and what is it?Central Processing Unit
Known as the brain of the computer and its job is to process data by searching, sorting, calculating and decision making. - 2What is the fetch-execute cycle?It gets the data from memory where it is stored in temporary memory called registers, it then decodes the instruction to understand what it is saying then it executes the instruction where the data processing takes place.
- 3What is Clock Speed?The operating speed of a computer or its microprocessor expressed in cycles per second. It is measured in Megahertz.
- 4How does the number of cores your computer has affect the speed?A CPU contains one or more processing unit, each unit is called a core. A core contains ALU, control unit and registers. It is common for computers to have dual, quad or more cores. CPUs with multiple cores have more power to run multiple programs at the same time.
- 5What is a cache?It is similar to a RAM, they are both temporary memory locations, it's where data is stored that needs to be recalled quickly. The larger the cache the faster your computer would potentially run.
- 6What is a GPU?Graphics processing unit, single chip processor that makes lighting effects and transforms objects every time a 3D scene is redrawn. It is used for 3D applications.
- 7What are the features of the von Neumann architecture?Memory, control unit, input-output, Logic unit and bus.
- 8Explain the diagram of the Von Neumann Architecture?
- 9What is the difference between main memory and cache memory?A CPU cache is used by the CPU of a computer to reduce the average time to access memory. Cache is smaller, faster memory which stores copies of the data from the most frequently used main memory locations.
- 10What is the DPA?Data Protection Act is a law designed to protect personal data stored on computers or in a paper filing system.
- 11What does BIOS stand for?Basic Input Output System
- 12What is the Computer Misuse Act?Developed to cope with hackers and viruses.
- 13What are the 3 levels of offence?Unauthorised access.
Unauthorised access with intent to commit another offence.
Unauthorised access.
Unauthorised access with intent to commit another offence and manipulating data. - 14Who is the Data Controller?Person or company that collects and keeps data about people.
- 15Who is the Data Subject?Person who has data about them stored outside their direct control.
- 16What is personal data?It's about living people and could be your address, name or phone number etc.
- 17What is sensitive data?Also about living people, but it includes one or more details of a data subject for example religion and criminal record.
- 18What is the definition of a Virus?They copy and transfer themselves without any user helping them and can cause great harm even if all they do is consume network resources and slow down the network.
- 19What is the definition of a worm?Program that enters computer without permission by attaching themselves to files and emails, where it corrupts and deletes files on your computer.
- 20What is a Trojan horse?Pretends to be something useful so the user downloads it onto their system where it then causes damage to the files and computer.
- 21What is spyware?Collects information, about users without knowledge. They get installed and take names, numbers and addresses also passwords.
- 22What is adware?Automatically downloaded and installed onto computer and appears using adverts and if clicked it will install and then corrupt and take files.
- 23What is Copyright?Exclusive, legal right given to originator to print, film, record and to authorize others to do the same.
- 24What is the purpose of the copyright law?To ensure people are rewarded for creativity. Give protection to copyright holder.
- 25Advantages of Star Topology?Reliable if cable fails, high performing.
- 26Disadvantages of Star Topology?Expensive to install, extra hardware, if the hub fails there is no internet connection.
- 27Advantages of Ring Topology?Transfer data quickly, no data collisions.
- 28Disadvantages of Ring Topology?If cable is faulty or fails then the entire network will fail.
- 29Advantages of Bus Topology?Easy to install, Cheap.
- 30Disadvantages of Bus Topology?Network fails if cable fails, there are more work stations so it is slower.
- 31What is a computer network?Two or more devices connected to share information and resources.
- 32What is a protocol?Set of rules followed to be achieved. Affects what type of computer your network connects.
- 33What is packet switching?Message broken into parts then sent separately and then reassembled at the destination.
- 34What does WAN stand for and give one characteristic?Wide area network - Spans large physical distance.
- 35What does LAN stand for and give one characteristic?Local area network - network devices connected over short distance.
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- Created by Harman Rai · Dec 7, 2015
- Copied by cameron walker · Jun 14, 2018
- Copied by dylan white · Jun 14, 2018
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