Protecting Networks with Firewalls

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

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

A firewall is a specialized technology designed to protect an organization's network against external threats. T/F

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

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

Microwave communication uses high-frequency ____

The ____ is the central node that coordinates the flow of data by sending messages directly between the sending and receiving nodes

The capacity of a communication channel is measured in ____.

Which physical connection is the fastest?

Every computer on the Internet has a unique numeric address called an ____.

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

LTE stands for ____.

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

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 service that uses existing phone lines to provide high speed connections is called ____.

Fiber-optic cable transmits data as pulses of light through tiny tubes of glass T/F

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

_____ is the process of breaking down information sent or transmitted across the internet into small parts.

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

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

The GPS device in an automobile uses which communication channel?

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

one of the most dramatic changes in connectivity and communications in the past few years has been ____.

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

The most common standard in LANs is called Ethernet. T/F

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

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

WiMax stands for ____

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

Cellular services use ___ to provide wireless connectivity to the internet