Ch 8

In a computer network, the node that requests and uses resources available from other nodes
Client
In a communication system, which among the following convert messages into packets that can travel across the communication channel?
Connection devices
A firewall is a specialized technology designed to protect an organization’s network against external threats. T/F
True
All communications between a company’s internal networks and the outside world pass through this server
Proxy
This type of network strategy uses central servers to coordinate and supply services to other nodes on the network
Client/server
Microwave communication uses high-frequency ____
Radio waves
The ____ is the central node that coordinates the flow of data by sending messages directly between the sending and receiving nodes
Switch
The capacity of a communication channel is measured in ____.
bandwidth
Which physical connection is the fastest?
Fiber-optic cable
Every computer on the Internet has a unique numeric address called an ____.
IP address
Organizations uses the following to allow suppliers and others limited access to their networks
Extranets
LTE stands for ____.
Long term evolution
In a network environment, a client provides resources for the servers. T/F
False
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
Tree
A service that uses existing phone lines to provide high speed connections is called ____.
DSL
Fiber-optic cable transmits data as pulses of light through tiny tubes of glass T/F
True
This type of network topology does not use a specific physical layout
Mesh
_____ is the process of breaking down information sent or transmitted across the internet into small parts.
Packetization
The essential features of this include identifying, sending, and receiving devices and breaking information into small parts for transmission across the Internet ____.
TCP/IP
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
The GPS device in an automobile uses which communication channel?
satellite
Remote users can connect to an organization’s network through this type of secure private connection
VPN
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
Using this type of communications channel, several users can simultaneously use a single connection for high-speed data transfer
Broadband
The most common standard in LANs is called Ethernet. T/F
True
A wireless access point that provide Internet access in a public place such as coffee shop, library, bookstore, or university
hotspot
This device enables connectivity between two LANs or a LAN and a larger network
Network gateway
WiMax stands for ____
Worldwide Interoperability for Microwave Access
Which among the following is considered a line-of-sight communication medium
Microwave
Cellular services use ___ to provide wireless connectivity to the internet
3G and 4G cellular networks