Английский язык. Ответьте на вопросы. помогайте друзья!!!!

Задание 2
1) Information technology is the use of computers and software to manage information.
Information technology plays a major role in the 21st century world; today, our economic productivity is based more on technology than on any other advance.

2) The internet has profoundly changed the way people communicate, learn, do business and find entertainment.

3) Nowadays, connections to the internet include simple telephone lines ( a dial up telephone connection) or faster digital subscriber lines (DSLs) and cable broadband that carry larger amounts of data at quicker transfer speeds.

3) Broadband technology is a general term referring to higher speed Internet connections that deliver data, voice and video material. He combines digital, fiber optic, and wireless network technologies that compress data and transmit them at blinding speeds.

4) Wi-Fi ( Wireless Fidelity) is a wireless network that connects various devices and allows them to communicate with one another through radio waves.

5) An intranet is a smaller version of the internet for use within an organization. Using a series of customized Web pages, employees can quickly find information about their firm as well as connect to external sources.

An extranet is a network of computers that permits selected companies and organizations to access the same information. He allows user to share data, process orders, and manage information.

6) WAN (wide-area network) is a network that connects computers over a large geographic area while LAN ( local-area network) connects computers that are in close proximity to each other, such as an office building or a college campus.

7) WLANs are networks linked by radio waves.