Which command combines the contents of one file with another?
Answer: C
Correct answer: APPEND
APPEND adds the contents of one file to the end of another, leaving a single combined file. RENAME only changes a file’s name, RESTORE copies files back from a backup, and there is no ADD command for this purpose.
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A single packet on a data link is known as
Answer: B
Correct answer: Frame
On a data link the unit of transmission is a frame: the packet handed down from the network layer, wrapped in a header carrying the source and destination hardware addresses and a trailer carrying a checksum. What travels on the wire is the frame; the packet is what it encloses.
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How many bit code is used by Murray code for TELEPRINTER machines.
Answer: B
Correct answer: 5
The Murray code, the teleprinter code standardised as ITA2, uses 5 bits per character. That gives \( 2^5 = 32 \) patterns - too few for letters, digits and punctuation together, so two of the patterns shift the machine between a letter case and a figure case, doubling the effective set.
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A compiler means
Answer: D
Correct answer: A program which translates source program into object program
A compiler is a program: it reads the whole source program, checks it against the grammar of the language, and produces an object program in machine code that can then be linked and run. The person who writes the source is the programmer.
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What is the name of the operating system for the laptop computer called MacLite?
Answer: D
Correct answer: OZ
The MacLite portable ran an operating system called OZ. Despite the name it was unrelated to the Apple Macintosh, and it ran neither DOS nor Windows.
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Which among following is not an input device ?
Answer: A
Correct answer: Printer
A mouse, a scanner and a keyboard all carry information into the machine, so they are input devices. A printer takes processed results out of it and puts them on paper, which makes it an output device.
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Which among following is not a programming language ?
Answer: C
Correct answer: IEEE
Php, Perl and Java are programming languages. IEEE is the Institute of Electrical and Electronics Engineers, a professional body that publishes standards such as 802.3 for Ethernet and 802.11 for wireless networks - an organisation, not a language.
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What is the full form of IP?
Answer: A
Correct answer: Internet protocol
IP is the Internet Protocol, the network-layer protocol that gives every host an address and routes packets from one to another across interconnected networks. It offers delivery on a best-effort basis; TCP above it adds the reliability.
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Which type of system puts the user into direct conversation with the computer through a keyboard?
Answer: B
Correct answer: Interactive computer
In interactive working the user types at a keyboard, the machine responds at once, and the next entry depends on that response - a conversation. Batch processing accepts a job and returns results later with no dialogue at all, and time sharing describes how the processor is divided between users rather than the style of the exchange.
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A computer assisted method for the recording and analyzing of existing or hypothetical systems is
Answer: B
Correct answer: Data flow
A data flow diagram records a system as processes, data stores and the flows between them, so an existing or a proposed system can be drawn and analysed before any code is written. Data capture, transmission and processing name individual operations on data, not a method of describing a whole system.
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