The foundation for ____ was laid in 1989 by researchers seeking an information system that would make it easy for their colleagues to locate and share data.
a. Usenet c. the Internet
b. the Web d. a WAN
Answer: C.
Computer Network
- A Web ____ is a software program that retrieves the page and displays it.
- A Web ____ makes a page available to users of the Web.
- Documents on the Web are known as Web ____.
- The physical structure of the Internet uses ____ to send data back and forth.
- The largest WAN in existence is the ____.
- If a network covers several buildings or cities, it is called a ____.
- If computers are close together, the network linking them is called a ____.
- The __ protocol establishes a virtual circuit with the destination computer to transmit packets.
- The acronym HTTP stands for ____.
- When you connect your computer to your ____, you become part of the Internet.
- Your Internet provider maintains a switching center called a ____.
- Cable modems are capable of speeds up to ____.
- Because of attenuation, a DSL subscriber is required to be no more than ____ feet away from the nearest telephone company switching station.
- Normal telephone voice-grade lines use ____-division multiplexing to divide up the bandwidth among the subscribers.
- A digital transmission link with a capacity of 1.544 Mbps is known as a ____ line.
- Normal copper wire is capable of carrying ____ voice channels.
- ____ convert binary digits into sounds by modulating or modifying a tone.
- A ____ is a device designed to protect an internal network or node from intentional or unintentional damage from an external network.
- ____ are small, special-purpose devices or computers used to connect two or more networks.
- A widely used technology that has become an industry standard for LANs is ____.
- In a ____ topology, a computers or a network device serves as a central point, or hub, for all messages.
- Network configurations are often referred to as network ____.
- A ____ is a small number of computers connected together in close proximity, usually in a building or complex.
- Each layer in the OSI model is defined in terms of a(n) ____ and a protocol data unit.