IT &computer MCQ section 6 MCQ Questions & Answers Detailed Explanation

Answer: (a)

On 15th July, 2007, HCL InfoSystem Ltd. India’s premier information and the country’s largest PC manufacturer announced the launch of India’s first personal computer with one terabyte hard drive capacity in the market.

Answer: (d)

Data is organized in a data storage hierarchy of increasingly complex levels: bits, bytes (characters), fields, records, files, and databases. Data are logically organized into:

Bits (characters): - a bit is the smallest unit of data representation (0 or 1);

Byte: a unit of digital information that most commonly consists of 8 bits;

Field: a field consists of a grouping of characters;

Record: record consists of fields, with each field describing an attribute of the entity;

File: a group of related records;

Database: an integrated collection of logically related records or files.

Answer: (a)

The question has more than one option correct: secondary storage is also known as auxiliary storage or external storage. USB (memory stick) Flash Drive is a secondary data storage device that includes flash memory with an integrated USB interface.

USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc. They are often used for the same purposes, for which floppy disks or CDs were used, i.e., for storage, data back-up and transfer of computer files.

Answer: (c)

Principal components of a central processing unit (CPU)include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory) and execution of instructions by directing the coordinated operations of the ALU, registers and other components.

Answer: (a)

A personal network is a set of human contacts known to an individual, with whom that individual would expect to interact at intervals to support a given set of activities.

Personal networks are intended to be mutually beneficial–extending the concept of teamwork beyond the immediate peer group. The term is usually encountered in the workplace

Answer: (c)

A bug in a program is an error, flaw, mistake or failure.