COMPUTER FUNDAMENTALS

Detailed explanation-1: -Network infrastructure can vary greatly in terms of:-Size of the area covered.-Number and types of services available. A network infrastructure that provides access to users and end devices in a small geographical area.

Detailed explanation-2: -Network infrastructure can be a mix of hardware devices, software applications, and network services, including: Hardware infrastructure typically includes routers, switches, hubs, repeaters, gateways, bridges, and modems. Software infrastructure includes monitoring and management tools and operating systems.

Detailed explanation-3: -Access Control: The prevention of unauthorized users and devices from accessing the network. Application Security: Security measures are placed on hardware and software to lock down potential vulnerabilities. Firewalls: Gatekeeping devices that can allow or prevent specific traffic from entering or leaving the network.

Detailed explanation-4: -There are four types of wireless networks–wireless local area networks, wireless metropolitan area networks, wireless personal area networks and wireless wide area networks–each with its own function.

Detailed explanation-5: -Network hardware, like routers, switches, and physical servers. Network software, which can run on either dedicated hardware or commodity servers. Network services, which come in the form of software that runs on servers.