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

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Question 1

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A network can be laid out in different ways.The layout,or shape,of a network is called a ________.

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Question 2

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Transmitting a signal from a ground station to a satellite is called ________.

A) broadcasting
B) high-frequency
C) uplinking
D) downlinking

E) A) and C)
F) B) and D)

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Question 3

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Wired communications media include three main types.The kind used for transmitting pulses of light is called a ________ cable.

Each zero and one signal represents a ________.

Describe the network topology used by the Internet.

GPS uses MEO satellites that continuously transmit timed radio signals used to identify earth locations.

Broadband technology (wireless digital services) is also referred to as ________-generation wireless services.

A virtual private network may include ________.

The two general classes of bandwidth are long and short.

Trolls,spies,hackers,and thieves are kinds of _________.

The three short-range wireless standards used in home automation networks,for linking switches and sensors around the house and yard,are Insteon,ZigBee,and _________.

A thermometer and a speedometer are examples of analog devices.

Cellphones are cellular radios.

What wired communications medium consists of dozens or hundreds of thin strands of glass or plastic?

Wi-Fi is a short-range wireless connection for LANs.

Communications signals represented in a binary electronic format are ________ signals.

Global Positioning Systems use ________ to continuously transmit signals to identify earth locations.

________ is the most common and most widely used LAN technology,with networked devices in close proximity; it can be used with almost any kind of computer.Most microcomputers come with a port for this type of network connection,which uses cable.

What are some of the uses and limitations of GPS?

The range of frequencies that a transmission medium can carry in a given period of time is called its ________.