The three benefits provided by a network are connections, communications, and services.
The three primary network topologies are bus, ring, and star.
Network interface cards (NICs) provide the connection between the computer and the network cabling.
The three network cabling types are twisted-pair, coaxial, and fiber-optic.
Network cabling is designated by transmission speed, length, or type.
Network protocols provide the rules for network communications.
Networks can be extended with repeaters, bridges, routers, and gateways.
The Internet is a valuable informational tool for an A+ Technician.
Lesson 2: Portable Computers
Portable computers, once a novelty, are now a part of everyday business life. Portable computers work and act just like the big ones except they are very compact. In this lesson, we look at those elements that make a portable computer unique.
After this lesson, you will be able to:
Estimated lesson time: 20 minutes
Distinguish between the different categories of portable computers.
Identify the unique components of portable systems.
Define the unique problems of portable systems.
Distinguish between the different types of computer cards designed for portable computers.
The category of portable computers includes laptop, notebook, and subnotebook (palmtop) computers, as well as the newest categories: PDA (personal digital assistant) and handheld computers.