Information Technology (Questions & Answers ) - 471021. The disk's surface is divided into a number of invisible concentric circles called:
Tracks
1022. COBOL is an acronym for :
Common Business Oriented Language
1023. A mechanism for arranging controlled access to a shared resource is :
Lock-out
1024. VLSI Stands for ----------:
Very Large Scale Integration
1025. Which output device is known as Soft Copy Output device :
Monitor
1026. A ---- is a group of computers and network devices connected together, usually within the same building:
LAN (local area network)
1027. Network of Networks :
Internet
1028. ---------is a type of cyber crime in which data is altered as it is entered into a computer system:
Data diddling
1029. How many Toggle keys are there in a keyboard?
Three
1030. First Generation (1940-56)
• Technology was the use of vacuum tubes in electronic circuit.
• internal operating speed (IOS) was milliseconds.
• Operating systems (OS) were batch processing.
• Machine codes & electric boards were the languages.
• Examples- UNIVAC-I, IBM-701.
1031. Second Generation (1957-63)
• Technology was the use of transistor and diodes.
• ros was microseconds
• OS was Batch processing.
• Languages were assembly language & high level language.
• Examples- UNIVAC-1004, IBM-1401.
1032. Third Generation (1964-71)
• Technology was the use of integrated circuits.
• I OS was nano seconds
• OS was time sharing.
• Languages were High Level Languages like FORTRAN, COBOL & BASIC.
• E:xamJ?les - UNIVAC-1100, IBM-360, PDP-8 .
1033. Fourth Generation (1971-present)
• Technology-was the use of large integrated circuits.
• IOS was in picoseconds
• OS were Dos & Windows.
• Languages were high level languages like Java, C++ & Python.
• Examples - ALTAIR-8800, IBM-370.
1034. Fifth Generation
• Artificial intelligence is the major characteristic. It i's the realm of programming where devices are able to think & react to the environment around them .
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