What is a server?

What is a server?

• A. A personal computer used by one user
• B. A device that connects two networks
• C. A software program that performs updates
• D. A system entity that provides a service

Answer: (D)

A server is a system entity that provides a service to clients over a network. It can be a dedicated machine or a software process that waits for requests (like web pages, files, or database queries) and then delivers the appropriate resources or performs the requested actions. The essence is service provision to others, not just how a device is used by a single person or how traffic is moved between networks. Think of it as the provider in a client-server relationship: clients request something, and the server supplies it. The other descriptions fit other roles: a personal computer used by one user is a client workstation, a device that connects two networks is a router/gateway, and a software program that performs updates is simply an updater, not a server.

A server is a system entity that provides a service to clients over a network. It can be a dedicated machine or a software process that waits for requests (like web pages, files, or database queries) and then delivers the appropriate resources or performs the requested actions. The essence is service provision to others, not just how a device is used by a single person or how traffic is moved between networks.

Think of it as the provider in a client-server relationship: clients request something, and the server supplies it.

The other descriptions fit other roles: a personal computer used by one user is a client workstation, a device that connects two networks is a router/gateway, and a software program that performs updates is simply an updater, not a server.