The Storage-to-Storage instructions
Answer: A
Correct answer: have both their operands in the main store.
Storage-to-storage instructions take both operands from main memory and return the result there, without loading either into a register first - the form used for moving and comparing character strings. Register-to-storage and register-to-register instructions are the other two families.
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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 modern digital computer has
Answer: D
Correct answer: All of the above
A modern digital computer is fast, holds a great deal of data, and computes to whatever precision is asked of it - extra digits cost only extra words of storage and time. All three statements therefore hold, which is why the combined option is correct.
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A program that is employed in the development, repair or enhancement of other programs is known as
Answer: B
Correct answer: Software tool
A program used to build, repair or improve other programs - a compiler, an editor, a debugger, a linker, a version control system - is a software tool. What sets the class apart is its subject: other software, rather than the user’s own data.
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LAN card is also known as ?
Answer: D
Correct answer: NIC
A LAN card is a network interface card: the adapter that gives a machine its physical connection to the network and its own MAC address. A modem converts between digital and analogue signals, while hubs and switches are separate devices that the cards connect to.
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Which are the two major types of computer chips?
Answer: D
Correct answer: Both b and c
The two chips that define a computer are the microprocessor, which executes the instructions, and the primary memory chip, which holds the instructions and data it works on. External storage is built from disks and other media rather than from a chip of this kind.
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Which of following is used to create table ?
Answer: D
Correct answer: DDL
DDL - the Data Definition Language part of SQL - defines the structure of the database, with CREATE, ALTER and DROP. DML manipulates the rows inside those tables (INSERT, UPDATE, DELETE) and DCL controls privileges (GRANT, REVOKE).
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Binary number system consists of ?
Answer: C
Correct answer: 0’s and 1’s only
The binary system has base 2, so it uses exactly two digits, 0 and 1. Everything a computer stores - numbers, text, images, instructions - is a pattern of those two, because each is easily represented by a circuit that is either off or on.
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An optical input device that interprets pencil marks on paper media is
Answer: A
Correct answer: O.M.R
Optical mark recognition shines light on a form and detects where the reflectance is reduced by a pencil mark, so the position of each filled bubble is read as an answer. It is how examination answer sheets and ballot forms are counted, and it reads marks rather than shapes, which is what distinguishes it from OCR.
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Which method is used to connect a remote computer?
Answer: B
Correct answer: Dialup
A dial-up connection reaches a distant machine by having a modem place an ordinary telephone call to a modem at the other end; once the two have negotiated, the line carries data. It is the classic way of connecting a remote computer over the public network.
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