IT &computer MCQ section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (b)

The computers of first generation (1946-1959) used vacuum tubes as the basic components for memory and circuitry for CPUand magnetic drums for memory. These computers relied on machine language, the lowest-level programming language understood by computers, to perform operations.

Answer: (d)

In information technology, a protocol is an agreement between the communicating parties on how communication is to proceed.

Violating the protocol makes communication more difficult, if not impossible. A protocol is the specialist set of rules that endpoints in a telecommunication connection.

Answer: (c)

User Datagram Protocol (UDP) uses a simple connectionless transmission model with a minimum protocol mechanism. It provides checksums for data integrity, and port numbers for addressing different functions at the source and destination of the datagram.

It is an alternative communications protocol to Transmission Control Protocol (TCP) used primarily for establishing low-latency and loss tolerating connections between applications on the Internet.

Answer: (d)

In IBM PC compatible computers, the Basic Input/Output System (BIOS), is the de facto standard defining a firmware interface. The name originated from the Basic Input/Output System used in the CP/ M operating system in 1975.

Answer: (a)

Electronic commerce, commonly known as e-commerce, is the buying and selling of products or services over electronic systems such as the Internet and other computer networks.

Electronic commerce draws on such technologies as electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems.