Exam 6: Communications, Networks, and Cyberthreats: the Wired and Wireless World

Infrared transmission is a type of low-frequency wireless transmission that is short-range and line-of-sight.

A mainframe computer that controls a large network is called the ________ computer.

Simple one-way radio receivers that receive data (but not voice messages)are called ________; they are often used in hospital environments.

The ________ consists of the main "highway" that connects all computer networks in an organization.

Satellite orbits are at three levels: GEO,MEO,and LEO.

The Internet is a WAN.

Networks are structured in two principle ways: client / server and ________.

Antivirus software protects files and computer systems in all of these ways EXCEPT which one?

The backbone is the main communications route in a bus network topology.

A _________ is a system of hardware and / or software that protects a computer or a network from intruders.

GPS uses satellites orbiting at a(n)________ level; they transmit timed radio signals used to identify earth locations.

A ________ network topology is one in which all microcomputers and other communications devices are connected directly to a central network switch.

What kind of topology (layout)is used by a network that connects all its computers and communications devices to a central server?

If an organization's internal private network uses the same infrastructure and standards of the Internet,then the private network is a(n)________.

Cellphones do not get infected by malware.

What form of wireless transmission sends data to an AM or FM receiver?

Virtual private networks (VPNs)are private networks that use a public network (usually the Internet)instead of private,leased (expensive)lines to connect remote sites.

A motherboard expansion card called a _________ enables a computer to send and receive messages over a network.

A set of conventions that govern how data is exchanged between devices on a network is known as a communications ________.

So they can be sent over a telephone line,analog signals are converted into digital signals,and then back again,by using ________.