Computer Science- Chapter 8

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Remote users can connect to an organization’s network through this type of secure private connection.

VPN

In a computer network, this node that requests and uses resources available from other nodes.

Client

Which physical connection is the fastest?

Fiber-optic cable

All communications between a company’s internal networks and the outside world pass through this server.

Proxy

In a communication system, which among the following convert messages into packets that can travel across the communication channel?

Connection devices

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

Client/server

_______ is a term relating to sending data to a satellite.

Uplink

The capacity of a communication channel is measured in _______.

bandwidth

A wireless access point that provides Internet access in a public place such as a coffee shop, library, bookstore, or university.

Hotspot

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

Mesh

WiMax stands for _______.

Worldwide Interoperability for Microwave Access

Every computer on the Internet has a unique numeric address called a(n) _______.

IP address

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

3G and 4G cellular networks

Microwave communication uses high-frequency _______.

radio waves

The essential features of this include identifying, sending, and receiving devices and breaking information into small parts for transmission across the Internet.

TCP/IP

This device enables connectivity between two LANS or a LAN and a larger network.

Network gateway

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

Packetization

In a communication system, which among the following originate and accept messages in the form of data, information, and/or instructions?

Sending and receiving devices

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

Tree

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

widespread use of mobile devices with wireless Internet connectivity

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

switch

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

Broadband

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

Extranets

The GPS device in an automobile uses which communication channel?

Satellite

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

Microwave

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

DSL

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