Exam 9: Communications and Networks

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Most hot spots span from ____ feet.

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____________________ consists of one or more twisted-pair wires bundled together.

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For radio transmissions, a transmitter is needed to send the broadcast radio signal and a receiver to accept it.

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In a fiber-optic cable, each strand, called an optical fiber, is as thin as a human hair.

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A(n) ____________________ is a coffeehouse or restaurant that provides computers with Internet access to its customers.

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In twisted-pair cable, each ____________________ consists of two separate insulated copper wires that are twisted together.

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____________________ are radio waves that provide a high-speed signal transmission.

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Many software products provide a means to ____, or work online, with other users connected to a server.

(Multiple Choice)
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  Figure 9-2 On a network such as the one illustrated in Figure 9-2, the ____________________ are the computers and mobile devices on the network that rely on the server for its resources. Figure 9-2 On a network such as the one illustrated in Figure 9-2, the ____________________ are the computers and mobile devices on the network that rely on the server for its resources.

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Identify the letter of the choice that best matches the phrase or definition.
Some hubs include these; that is, the hub receives data from many directions and then forwards it to one or more destinations.
UWB
Requires line-of-sight transmission; that is, the sending device and the receiving device must be in line with each other so that nothing obstructs the path of the light wave.
infrared
Kind of network that is sometimes called a file sharing network.
Gigabit Ethernet
Correct Answer:
Verified
Premises:
Responses:
Some hubs include these; that is, the hub receives data from many directions and then forwards it to one or more destinations.
UWB
Requires line-of-sight transmission; that is, the sending device and the receiving device must be in line with each other so that nothing obstructs the path of the light wave.
infrared
Kind of network that is sometimes called a file sharing network.
Gigabit Ethernet
Allows participants to have the ability to open a separate window and type messages to one another.
Bluetooth
Some industry experts predict that this will replace infrared technology.
broadcast radio
A network standard that specifies how two devices use short-range radio waves to communicate at high speeds with each other.
GPS
Instead of these, some users access the Internet wirelessly through 3G networks.
dedicated
To prevent unauthorized users from accessing files and computers, many routers are protected by these.
hot spots
Can be negatively affected by the distance between two points, the type of transmission media, and the number of nodes through which data must travel.
wireless home network
A wireless transmission medium that distributes radio signals through the air over long distances.
fiber-optic
A technology that uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person.
P2P
Works in conjunction with the TCP/IP network standard.
adapter card
A dial-up modem usually is in this form, which is inserted in an expansion slot on a computer's motherboard.
firewalls
A widely used application of this technology is to assist people with determining where they are located.
latency
The core of this kind of cable consists of dozens or hundreds of thin strands of glass or plastic that use light to transmit signals.
bus
The physical cable that connects the computers and other devices in a bus network.
WAP
Provides high speeds of transmission, with transfer rates of 1 Gbps (1 billion bits per second).
RFID
One advantage of this is that a mobile computer can be taken outside and then connect to the Internet through the home network as long as it is in the network's range.
routers
The most common type of network card.
Ethernet card
Type of lines that can be either analog or digital.
online meeting
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____________________ consists of single copper wire surrounded by at least three layers: an insulating material, a woven or braided metal, and a plastic outer coating.

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____________________ is a wireless transmission medium that distributes radio signals through the air over long distances.

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A MAN usually is managed by a consortium of users or by a single network provider that sells the service to the users.

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Today, ____ is the most popular LAN technology because it is relatively inexpensive and easy to install and maintain.

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Each computer or device on a local area network, called a ____, often shares resources such as printers, large hard disks, and programs.

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Physical transmission media used in communications include all of the following except ____.

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Baseband media transmits multiple signals simultaneously.

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On a client/server network, the client sometimes is called a host computer.

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One popular use of the ____ network standard is in hot spots that offer mobile users the ability to connect to the Internet with their wireless computers and devices.

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A(n) ____________________ is a modem that sends and receives data and information to and from a digital telephone line.

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