Question 1

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

Accepted Answer

Wireless sensor networks (WSNs) are networks of interconnected wireless devices that are embedded into the physical environment to provide measurements of many points over large spaces. These devices have built-in processing, storage, and radio frequency sensors and antennas. They are linked into an interconnected network that routes the data they capture to a computer for analysis. These networks range from hundreds to thousands of nodes. Because wireless sensor devices are placed in the field for years at a time without any maintenance or human intervention, they must have very low power requirements and batteries capable of lasting for years. Wireless sensor networks are valuable in areas such as monitoring environmental changes; monitoring traffic or military activity; protecting property; efficiently operating and managing machinery and vehicles; establishing security perimeters; monitoring supply chain management; or detecting chemical, biological, or radiological material.

Question 2

In the domain name "http: //books.azimuth-interactive.com", which element is the second-level domain?

Accepted Answer

A)   books
B)   azimuth-interactive
C)   com
D)   none; there is no second-level domain in this name
E)   books.azimuth-interactive B

Question 3

An NOS must reside on a dedicated server computer in order to manage a network.

Accepted Answer

A) True 
 B)False  False

Question 4

Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching.

Accepted Answer

A) True 
 B)False

Question 5

Based on your reading of the examples in the chapter, what would be the best use of RFID for a business?

Accepted Answer

A)   logging transactions
B)   managing the supply chain
C)   lowering network costs
D)   enabling client communication
E)   improving employee engagement

Question 6

4G networks use which standards?

Accepted Answer

A)   GSM and LTD
B)   CDMA and PAN
C)   LTE and LTD
D)   T-Mobile and AT&T
E)   LTE and WiMax

Question 7

Blogs, wikis, and social networking sites were designed for individuals to communicate with each other. What uses do businesses have for these tools?
 Give specific examples.

Accepted Answer

The answer of Blogs, wikis, and social networking sites were...

Question 8

A VPN

Accepted Answer

A)   is an encrypted private network configured within a public network.
B)   is more expensive than a dedicated network.
C)   provides secure, encrypted communications using Telnet.
D)   is an Internet-based service for delivering voice communications.
E)   is a proprietary networking service technology developed by individual corporations.

Question 9

The most appropriate wireless networking standard for creating PANs is

Accepted Answer

A)   I-mode.
B)   IEEE 802.11b.
C)   Wi-Fi.
D)   Bluetooth.
E)   RFID.

Question 10

What is Web 3.0, and how do you think Web 3.0 developments could impact businesses?

Accepted Answer

The answer of What is Web 3.0, and how do...

Question 11

The total amount of digital information that can be transmitted through any telecommunications medium is measured in

Accepted Answer

A)   bps.
B)   Hertz.
C)   baud.
D)   gigaflops.
E)   RPMs.

Question 12

Which type of network is used to connect digital devices within a half-mile or 500-meter radius?

Accepted Answer

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

Question 13

Which of the following is the first generation of cellular systems suitable for watching videos?

Accepted Answer

A)   2G
B)   2.5G
C)   3G
D)   3.5G
E)   4G

Question 14

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

Accepted Answer

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.

Question 15

The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes.

Accepted Answer

A) True 
 B)False

Question 16

A(n) ________ is a commercial organization with a permanent connection to the Internet that sells temporary connections to retail subscribers.

Accepted Answer

A)   RSS
B)   WAN
C)   NFP
D)   ISP
E)   FTP

Question 17

Which of the following is not one of the top five search engines?

Accepted Answer

A)   Facebook
B)   Yahoo
C)   Microsoft Bing
D)   Ask
E)   Google

Question 18

A(n) ________ is software for locating and managing stored Web pages.

Accepted Answer

A)   Web server
B)   net server
C)   router
D)   modem
E)   hub

Question 19

________ monetizes the value of the data stored by search engines.

Accepted Answer

A)   TCP/IP
B)   RSS
C)   WiMax
D)   Wireless sensor networks
E)   Search engine marketing

Question 20

The Internet is based on which three key technologies?

Accepted Answer

A)   TCP/IP, HTML, and HTTP
B)   TCP/IP, HTTP, and packet switching
C)   client/server computing, packet switching, and the development of communications standards for linking networks and computers
D)   client/server computing, packet switching, and HTTP
E)   e-mail, instant messaging, and newsgroups

Exam 7: Telecommunications, the Internet, and Wireless Technology

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