Laser printer is a type of ?
Answer: B
Correct answer: Non impact printing
A laser printer draws the page as a pattern of charge on a photosensitive drum, which picks up toner and transfers it to the paper, where heat fuses it. Nothing ever strikes the sheet, so it is a non-impact printer - unlike dot-matrix, daisy-wheel and line printers, where hammers or pins hit a ribbon against the paper.
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Direct Access Storage Device is also referred as ?
Answer: B
Correct answer: DASD
A direct access storage device is abbreviated DASD, an IBM term for disk storage - a medium on which any record can be reached directly by its address, without reading everything recorded before it, as tape would require.
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Which of the following software interacts with the hardware ?
Answer: C
Correct answer: System software
System software - the operating system, its drivers and its utilities - is the layer that deals with the hardware directly, issuing the commands that read a disk, drive a display or send a packet. Application software asks the system software to do that work rather than touching the hardware itself.
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UNIVAC is an example of
Answer: A
Correct answer: First generation computer
UNIVAC I, delivered in 1951, was built from vacuum tubes and programmed in machine language - the defining features of the first generation. Transistors mark the second generation, integrated circuits the third, and microprocessors the fourth.
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Data division is the third division of a _____ program.
Answer: A
Correct answer: COBOL
A COBOL program is written in four divisions in a fixed order: IDENTIFICATION, ENVIRONMENT, DATA and PROCEDURE. The Data Division, third of the four, declares every file and working-storage item the program uses before the Procedure Division operates on them.
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What is The capacity of 3.5 inch floppy disk?
Answer: D
Correct answer: 1.44 MB
The 3.5-inch high-density diskette holds 1.44 MB: 80 tracks a side, two sides, 18 sectors per track and 512 bytes per sector, giving \[ 80 \times 2 \times 18 \times 512 = 1{,}474{,}560 \text{ bytes} \] which is 1440 KB, quoted as 1.44 MB.
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Compiler is related to ?
Answer: A
Correct answer: Programming Language
A compiler reads a program written in a high-level programming language and translates the whole of it into machine code before it is run, reporting any breach of the language’s grammar as it goes. Its subject matter is therefore the programming language, not the operating system, the network or a database.
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Applications are often referred to as ____________
Answer: C
Correct answer: executable files
An application is a program, and a program is delivered as an executable file - one whose contents are machine instructions the operating system can load and run. Data files hold the material such a program works on; system software and the operating system are a different layer altogether.
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What is the primary requisite of a good computer programmer?
Answer: C
Correct answer: Logical mind
Programming is the business of breaking a problem into unambiguous steps and reasoning about what follows from what, so a logical turn of mind matters most. Mathematics and domain knowledge help with particular problems, but the ability to reason through a procedure applies to all of them.
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Computer security can be increased by using ?
Answer: D
Correct answer: All of above
Security is built in layers, and each item is one layer: a password keeps unauthorised people out of the account, an antivirus detects and removes hostile software, and a firewall filters the traffic allowed in and out. Since all three raise security, the combined option is correct.
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