IT &computer MCQ section 7 MCQ Questions & Answers Detailed Explanation

Answer: (b)

System management is designed to balance processing and input/output, with the aim of providing reasonable minimum turnaround and maximum throughput. Turnaround is the amount of time elapsing between a request to the computer to execute a program or input and the availability of output.

Answer: (c)

Initially released in 1993, HTML or HyperText Markup Language is the standard markup language used to create web pages. The first important extension to HTML itself was called Dynamic HTML (DHTML). Active Server Pages (ASP) was released in 1996; XML was also started in the same year.

Answer: (b)

A grid is a network or a series or vertical and horizontal lines constructed perpendicular to each other. One series or lines runs from east to west and the other from north to south. Together they form squares of same dimensions within a given map. Each of the line forming the squares is given a value so that the position of an object on a map can be easily identified.

Answer: (a)

Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication and power supply between computers and electronic devices. USB was designed to standardize the connection of computer peripherals to personal computers, both to communicate and to supply electric power.

Answer: (a)

The process is known as index definition. The order in which columns are listed in the index definition is important. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indices can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.

Answer: (c)

A local area network (LAN) is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building using network media.

The defining characteristics of LANs, in contrast to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area, and lack of a need for leased telecommunication lines.