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Exam 10: Communicating Digital Content

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Question 81

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Fiber-optic cables have the capability of carrying significantly more signals than wire cables.

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Question 82

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As shown in the accompanying figure, what is the term for a network that covers a large geographic area, such as a city, country, or the world, using a variety of wired and wireless transmission media?

A) local area network (LAN)
B) metropolitan area network (MAN)
C) wide area network (WAN)
D) variable area network (VAN)

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Question 83

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COGNITIVE ASSESSMENT Which of the following offers an alternative to infrared communications with high bandwidth transmissions?

Which of the following enables a computer or device that does not have built-in networking capability to access a network?

COGNITIVE ASSESSMENT Which is the best description of a coaxial cable?

Transmission from a satellite to an earth-based station is called an uplink.

COGNITIVE ASSESSMENT Which group developed the WiMAX standard?

A(n)____________________ device is a device that accepts the transmission of data, instructions, or information.

With ISDN, the same telephone line that could carry only one computer signal now can carry three or more signals at once through the same line, using a technique called ____________________.

COGNITIVE ASSESSMENT What is a sending device?

An extranet essentially is a small version of the Internet that exists within an organization.

Which of the following terms is an electrical disturbance that can degrade communications?

COGNITIVE ASSESSMENT How are standards such as EDI used by businesses?

Which of the following is an earth-based reflective dish that contains the antenna, transceivers, and other equipment necessary for microwave communications?

____________________ is a set of standards for digital transmission of data over standard copper telephone lines.

Some mobile users have a wireless modem that uses a mobile phone provider's network to connect to the Internet wirelessly from a computer or other mobile device.

Many home users are connecting multiple computers and devices together into a system. What is the name for this system?

​____ is provided by applications such as email, FTP, browser, discussion boards, chat rooms, Internet messaging, videoconferencing, and VoIP.

ADSL is ideal for Internet access because most users upload more information than they download from the Internet.

Which of the following is a simple, inexpensive network that typically connects fewer than 10 computers?