ICT-CHAPTER 12-KEYWORDS ACTUAL REAL EXAM UPDATED QUESTIONS AND DETAILD ANSWERS.

analogue - correct answer refers to the continually varying nature of some values that are input into computer systems. data in this format must be converted to digital format before it can be stored on a computer system batch processing - correct answer invoves collecting data over a period of time and then proceesing this data collectively at a convenient time. the batc is held as a transaction file and then after processing the master file is uploaded check digit - correct answer a digit added to the beginning or the end of a number to verify that the number entered is a authentic code. chip and pin - correct answer replaced the magnetic chip on credit and debit cards. computer control - correct answer can process variables which are fed in; the output of the computer is used to control the process. based on the principal of feedback data collection - correct answer using forms and devices to collect data from a variety of sources data logging - correct answer capturing data at regular intervals by a device such as a sensor. it is then stored by a computer for analysing at a later point data subject - correct answer the individual whose personal data is being stored and used. the data protection act will guide organisations on the legal use of personal data digital certificate - correct answer an attachment to an electronic message used for security purposes digital signature - correct answer a digital code attatched to an electronic message which uniquely identifies and authenticates the sender e-commerce - correct answer this is a means of conducting buisness transactions over electronic networks feedback - correct answer this is a situation where the output can influence further inputs. it is used in real-time processing situtations hacker - correct answer a person who gains unauthorsied access to a computer system information commissioner - correct answer the organisation who is responsible for reguating compliance with the Data Protection legislation interactive TV - correct answer a digital television that alows for two way communication intranet - correct answer a website which is only available to employees or members of an organisation, school or college. magnetic stripe - correct answer this is an integral part of a plastic card. on this tape data can be written or read master file - correct answer the mian file used to store data in a computer system modelling - correct answer creating a set of rules that can stimulate a real life situtation done by a computer multimedia - correct answer the combination of text, graphics, video, voice and sound to produce a presentation or website podcast - correct answer a series of digital files that are released episodically and often downloaded as mulitimedia files from the internet onto mobile phones sensor - correct answer an electronic component that converts energy from one source to another that can be understood by a computer system simulation - correct answer a computer program used to model real life situations and associated behaviour such as an aircraft cockpit