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

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: (d)

Computers connected directly to the internet are called “Servers,” while the computers we use are “clients,” because they are not connected directly to the internet, but through an Internet Service Provider.

TCP/IP is the communication protocol for the internet. TCP/IP defines the rule computers must follow to communicate with each other over the internet.

TCP provides a communication service at an intermediate level between an application program and the Internet Protocol (IP).

Answer: (d)

The Data Link layer is the second layer of the seven-layer Open Systems Interconnection (OSI) model of computer networking at which meaning is assigned to the bits that are transmitted over the network. Two types of Data Link layer devices are commonly used on networks: bridges and switches.

A bridge is an intelligent repeater that is aware of the MAC addresses of the nodes on either side of the bridge and can forward packets accordingly.

A switch is an intelligent hub that examines the MAC address of arriving packets in order to determine which port to forward the packet to.

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.