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Exam 8: Communications and Networks

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Question 21

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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.

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Question 22

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

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Question 23

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

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

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

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

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

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

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

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

Standard telephone lines use coaxial cables.

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

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

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

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

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.

Explain how global positioning systems function.

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

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