Exam 8: Communications and Networks

Explain how intranets and extranets are useful in supporting communication in an organization.

Network _______ describes how a network is arranged and how resources are coordinated and shared, encompassing network topologies and strategies.

A service that uses existing phone lines to provide high-speed connections is called _______.

A _______ area network is a network where the nodes are in close physical proximity to each other.

Which among the following is considered a line-of-sight communication medium?

Cellular services use _______ to provide wireless connectivity to the Internet.

Explain how global positioning systems function.

A _______ network topology does not use a specific physical layout but requires that each node have more than one connection to the other nodes.

A network gateway can be used to connect the LAN of one office group to the LAN of another office group.

A network topology in which the central node is connected to two or more subordinate nodes that, in turn, are connected to other subordinate nodes.

A(n) _______ is a private network within an organization that is designed to resemble the Internet.

Using this type of communications channel, several users can simultaneously use a single connection for high-speed data transfer.

Intrusion detection systems can recognize signs of a network attack and disable access before an intruder can do damage.

The client/server network strategy can handle very large networks efficiently.

A hierarchical network topology in which each device is connected to a central node, either directly or through one or more other devices, is also called a _______ network.

Standard telephone lines use coaxial cables.

This type of network strategy uses central servers to coordinate and supply services to other nodes on the network.

In a network environment, a client provides resources for the servers.

Fiber-optic cable transmits data as pulses of light through tiny tubes of glass.

WANs are widely used by organizations to link personal computers and to share printers and other resources.