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

Answer: (a)

Looping is used in programming to save the tedium of many repetitive tasks. One of the main uses of loops in programs is to carry out repetitive tasks. A loop executes one or more lines of code (statements) as many times as one wants.

Answer: (a)

Customer relationship management (CRM) is a model for managing a company’s interactions with current and future customers. It involves using technology to organize, automate, and synchronize sales, marketing, customer service, and technical support.

Answer: (a)

The process of reducing the size of a data file is popularly referred to as data compression, although its formal name is source coding. Compression is useful because it helps reduce resources usages, such as data storage space or transmission capacity.

Because compressed data must be decompressed to use, this extra processing imposes computational or other costs through decompression.

Answer: (c)

The Internet protocol suite is the set of communications protocols used for the Internet and similar networks, and generally the most popular protocol stack for wide area networks.

It is commonly known as TCP/IP, because of its most important protocols: Transmission Control Protocol (TCP) and Internet Protocol (IP), which were the first networking protocols defined in this standard.

Answer: (b)

Unix is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs. It provides separate logins for each user and separate storage space. Most importantly it supports separate security for users and groups.

Answer: (c)

Assembly language uses a mnemonics to represent each low-level machine operation or opcode. Some opcodes require one or more operands as part of the instruction, and most assemblers can take labels and symbols as operands to represent addresses and constants, instead of hard coding them into the program.