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Exam 8: Communications and Networks

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Question 1

True/False

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Network operating systems (NOS)control and coordinate the activities of all computers and other devices on a network.

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True

Question 2

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In a client/server network,the ________ provides access to resources and services.

A) client
B) switch
C) server
D) gateway

Correct Answer

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C

Question 3

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TCP/IP protocol involves identifying,sending,and receiving devices and breaking information into small parts for transmission across the Internet.

Compare the high-speed connection services: DSL,cable,fiber-optic service (FiOS),satellite,and cellular services.

WiMax stands for ________.

One of the most dramatic changes in connectivity and communications in the past few years has been ________.

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

What are the advantages and disadvantages of using a peer-to-peer system?

In a wireless LAN,all communications pass through the network's centrally located wireless access point or ________ station.

Organizations use the following to allow suppliers and others limited access to their networks.

________ are countrywide and worldwide networks.

The ________ is the central node that coordinates the flow of data by sending messages directly between the sender and receiver nodes.

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

This type of network topology does not use a specific physical layout.

Cellular services use ________ to provide wireless connectivity to the Internet for smartphones.

Modulation is the name of the process of converting from digital to analog.

________ is the process of breaking down information sent or transmitted across the Internet into small parts.

Describe the four categories of bandwidth.

A ________ network system uses central servers to coordinate and supply services to other nodes on the network.

In a peer-to-peer network,only the central host computer supplies the resources,the other computers request resources from this host.