Computer fundamental MCQ Questions and answers- Technical Aptitude

31

The central processor of a modern digital computer consists of

A) control unit B) primary memory C) control unit and primary memory D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

The central processor of a modern digital computer consists of control unit and primary memory. Central processing unit (CPU), principal part of any digital computer system, generally composed of the main memory, control unit, and arithmetic-logic unit.

32

Fifth generation computers are likely to exhibit

A) artificial intelligence B) heuristic behaviour C) advanced parallel processing D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

Fifth generation computers are likely to exhibit Artificial intelligence, Heuristic behavior and Advanced parallel processing. Artificial Intelligence is a way of making a computer, a computer-controlled robot, or a software think intelligently, in the similar manner the intelligent humans think.

33

A computer system consisting of its processor, memory and I/O devices accepts data, processes it and produces the output results. Can you tell in which component is the raw data fed?

A) Mass Memory B) Main memory C) Logic unit D) Arithmetic unit E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

A computer system consisting of its processor, memory and I/O devices accepts data, processes it and produces the output results. Can you tell in which component is the raw data fed in main memory.

34

When did arch rivals IBM and Apple Computers Inc. decide to join hands?

A) 1978 B) 1984 C) 1990 D) 1991 E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

The arch rivals IBM and Apple Computers Inc. decide to join hands in 1991. The Macintosh II is a personal computer designed, manufactured, and sold by Apple Computer from March 1987 to January 1990.

35

The transistorized computer circuits were introduced in the

A) First generation B) Second generation C) Third generation D) Fourth generation E) Fifth generation

Discuss

Answer & Solution

Answer: Option B

Solution:

The transistorized computer circuits were introduced in the Second generation computer.

36

The memory sizes in mainframe computers and advanced technology micro computers are expressed as

A) Bytes B) Kilo-bytes C) Bits D) Megabytes E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol is MB. The unit prefix mega is a multiplier of 1000000 (10⁶) in the International System of Units (SI). Therefore, one megabyte is one million bytes of information.

37

A memory bus is mainly used for communication between

A) processor and memory B) processor and I/O devices C) I/O devices and memory D) input device and output device E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

The memory bus is a type of computer bus, usually in the form of a set of wires or conductors which connects electrical components and allow transfers of data and addresses from the main memory to the central processing unit (CPU) or a memory controller.

Source : techopedia.com

38

An AND gate

A) implements logic addition B) is equivalent to a series switching circuit C) is an any or all gate D) is equivalent to a parallel switching circuit E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

The AND gate is a basic digital logic gate that implements logical conjunction - it behaves according to the truth table to the right. A HIGH output (1) results only if all the inputs to the AND gate are HIGH (1). If none or not all inputs to the AND gate are HIGH, a LOW output results.

Source : wikipedia.org

39

The daily processing of corrections to customer accounts best exemplifies the processing mode of:

A) Batch processing B) Real-time processing C) Time-sharing D) Offline processing E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

In computing, batch processing refers to a computer working through a queue or batch of separate jobs (programs) without manual intervention (non-interactive). Depending on the situation, each job may have an associated metadata such as client, department or user - and some indication of the priority and resources required.

40

Which of the following devices can be used to directly input printed text?

A) OCR B) OMR C) MICR D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

Optical character recognition (also optical character reader, OCR) is the mechanical or electronic conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene-photo or from subtitle text superimposed on an image.