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

Answer: (b)

UNIX is a popular multi-user, multitasking operating system developed at Bell Labs in the early 1970s. Created by just a handful of programmers, UNIX was designed to be a small, flexible system used exclusively by programmers. It was designed to be portable, multi-tasking and multi-user in a timesharing configuration.

Answer: (b)

Digital circuits, represent signals by discrete bands of analog levels, rather than by a continuous range. Because the fundamental information element of digital circuits has two states, it is most naturally represented by a number system where each individual digit has two states: binary.

Answer: (b)

The Sun Labs skunk works have found the use of computers and networks in the car, using Java, Solaris/Linux, and embedded systems. The car track is embedded with real-time Java sensor technology.

Answer: (c)

A metropolitan area network (MAN) is a computer network that usually spans a city or a large campus. A MAN usually interconnects a number of local area networks (LANs) using a high-capacity backbone technology, such as fiber-optical links, and provides uplink services to wide area networks (or WAN) and the Internet.

Answer: (b)

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is an electronic circuit on one small plate ("chip") of semiconductor material, normally silicon. Such a circuit can be made very compact, having up to several billion transistors and other electronic components.

Answer: (d)

Bluetooth is a wireless technology standard for exchanging data over short distances, creating personal area networks (PANs) with high levels of security. It can connect several devices, overcoming problems of synchronization.