Basic Computer Networks Quiz Questions

Satellite communications function on wireless communication systems because they use satellites to transmit and receive signals wirelessly. Satellites act as relay stations in space, receiving signals from ground-based stations and then retransmitting them to other locations on Earth. This allows for long-distance communication without the need for physical cables or infrastructure.

A router is a single piece of hardware that allows you to use several computers on a single Internet connection. It acts as a central hub for connecting multiple devices to the Internet and directs network traffic between them. Unlike a modem, which is responsible for connecting your network to the Internet service provider, a router enables multiple devices to access the Internet simultaneously by assigning unique IP addresses to each device and managing the flow of data between them. Therefore, a router is the correct answer for this question.

A modem is a device that allows computers to transmit data over telephone lines. It converts digital signals from the computer into analog signals that can be transmitted over telephone lines, and then converts the analog signals back into digital signals at the receiving end. The performance of a modem is often measured in baud or bits per second (bps), which indicates the speed at which data can be transmitted.

An extranet is a private network that allows authorized external users to access certain resources or information of a company. It is an extension of the corporate intranet because it provides a controlled and secure way for external parties, such as customers, suppliers, or partners, to connect and collaborate with the company's internal network. It allows these external users to access specific parts of the intranet, enabling seamless communication and sharing of information between the company and its external stakeholders.

ADSL stands for Asymmetric Digital Subscriber Line. This technology allows for high-speed internet access through existing telephone lines. The term "asymmetric" refers to the fact that the download speed is typically faster than the upload speed. This is beneficial for most internet users who primarily consume content rather than upload large files. The other options, Advanced Digital Service Line, American Download Service Line, and African Download Subscriber Line, are not accurate definitions of the term ADSL.