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NFC tags are always passive.

A) True
B) False

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Client/server computing has largely replaced centralized mainframe computing.

A) True
B) False

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A computer network consists of at least two computers.

A) True
B) False

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What are some of the common types of physical transmission media and what differentiates them from one another?

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Common types of physical transmission me...

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Which of the following is not a characteristic of packet switching?


A) Packets travel independently of each other.
B) Packets are routed through many different paths.
C) Packet switching requires point-to-point circuits.
D) Packets include data for checking transmission errors.
E) Packets are reassembled into the original message when they reach their destinations.

F) B) and E)
G) C) and E)

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Which of the following pulls content from websites and feeds it automatically to users' computers?


A) FTP
B) RSS
C) HTTP
D) Bluetooth
E) IPv6

F) B) and E)
G) B) and D)

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The most common web servers today are:


A) Microsoft IIS and IBM HTTP Server.
B) WebSTAR and Netscape Server.
C) IBM HTTP Server and Apache HTTP Server.
D) Netscape Server and Apache HTTP.
E) Apache HTTP Server and Microsoft IIS.

F) A) and E)
G) None of the above

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What has made the Google search engine so successful?

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The Google search engine became so successful because it was one of the first search engines to incorporate page ranking.Not only does it index the web pages it finds according to both keywords and combinations of keywords,it also ranks each page according to the number of pages that link to it,and the number of pages it links to itself.This helped make search results more relevant when compared to search engines relying solely on key words used on web pages.A user could be relatively certain that they would find relevant information within the top results of a Google search.Improved search results for the user,along with continual improvements to its search engine,the development and other web applications,tools,and its Ad Sense product where it sells keywords to the highest bidder has made Google so successful as a search engine and marketing firm.

What are wireless sensor networks? How do they work and what are they used for?

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Wireless sensor networks (WSNs)are netwo...

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Digital subscriber lines:


A) operate over existing telephone lines to carry voice,data,and video.
B) operate over coaxial cable lines to deliver Internet access.
C) are very-high-speed data lines typically leased from long-distance telephone companies.
D) have up to twenty-four 64-Kbps channels.
E) are assigned to every computer on the Internet.

F) None of the above
G) A) and D)

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Which type of network is used to connect digital devices within a city or metropolitan area?


A) Wi-Fi
B) LAN
C) WAN
D) MAN
E) SAN

F) A) and C)
G) B) and C)

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Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.

A) True
B) False

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Digital rights activists believe differentiated pricing does not violate net neutrality principles.

A) True
B) False

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What are the business advantages of using voice over IP (VoIP)technology?

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Businesses can lower costs by using the ...

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TCP/IP was developed during the early 1970s to support efforts to help scientists transmit data among different types of computers over long distances.

A) True
B) False

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Which signal types are represented by a continuous waveform?


A) Laser
B) Optical
C) Digital
D) RFID
E) Analog

F) A) and E)
G) A) and D)

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What are the two types of signals used to communicate a message in a network and how are they different? What device converts one type to the other type?

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The two ways to communicate a message in a network are analog signals and digital signals.An analog signal is represented by a continuous waveform that passes through a communications medium and is used for voice communication.Examples include the telephone handset and other types of speakers that generate analog sound.On the other hand,digital signals are binary waveforms (not continuous)that communicate information as strings of two discrete states: one bit or zero bits (often depicted as strings of zeroes and ones).Computers use these types of signals and use modems to convert digital signals to analog signals.

Which type of network treats all processors equally and allows peripheral devices to be shared without going to a separate server?


A) MAN
B) Wireless
C) LAN
D) Windows domain network
E) Peer-to-peer

F) A) and B)
G) C) and D)

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A network that covers entire geographical regions is most commonly referred to as a(n) :


A) local area network.
B) intranet.
C) peer-to-peer network.
D) wide area network.
E) metropolitan area network.

F) A) and B)
G) A) and C)

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Which of the following is a device that sends packets of data through different networks assuring they go to the correct address?


A) Hub
B) Switch
C) Router
D) NIC
E) Modem

F) A) and E)
G) B) and C)

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C

Showing 1 - 20 of 100

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