IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation

Answer: (a)

VPN is all about maintaining privacy over the public internet.

Answer: (b)

PSW stands for Program Status Word. It is an IBM System/360 architecture and successors control register which performs the function of a Status register and Program counter in other architectures, and more. It contains status bits that reflect the current CPU state.

Answer: (c)

An automated teller machine or automatic teller machine (ATM) is a computerized telecommunications device that enables the clients of a financial institution to perform financial transactions without the need for a cashier, human clerk or bank teller.

The first modern ATMs came into use in December 1972 in the UK; the IBM 2984 was designed at the request of Lloyds Bank.

Answer: (c)

The overall design or description of the database is known as database schema or intension of the database and is specified while designing the database.

The data in the database at a particular point of time is known as database instance of database state or snapshot. The database state is also called an extension of the schema.

Answer: (d)

Electronic waste or E-waste is the collective term for discarded electrical or electronic devices such as computers, mobile phones, etc that enter the waste stream from various sources.

E-waste contains a significant concentration of substances that are highly toxic and are hazardous to human health and the environment.

Answer: (c)

A web browser is a software application for accessing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URL). The major web browsers are Firefox, Internet Explorer, Google Chrome, Opera, etc.