Deck 3: Telecommunications and Networking

Question 1

Which of the following most accurately describes the routing function of telecommunications?

A) checking for errors and putting the communication into a standardized format
B) changing coding system or speed when moving data between devices on the network
C) keeping track of the status of the network
D) choosing the most efficient path for a message to be sent over the Internet

Answer 1

D

Question 2

What is a key characteristic of a dedicated line versus a switched line?

A) requires fiber optic media
B) used only for transactions within a single building
C) provides a direct transmission between sender and receiver
D) all of the above

Answer 2

C

Question 3

Which of the following is not an advantage of a wireless LAN versus a wired LAN?

A) faster transmission speed and more secure
B) takes planning, but relatively easy to install
C) enables users of mobile devices to connect to a LAN
D) can be used as an overlay network to permit employees to connect their laptops to the corporate network from anywhere in the building

Answer 3

A

Question 4

Which of the following is not a characteristic of fiber-optic transmission?

A) faster transmission than twisted pair of wires
B) more secure than other media because it does not emit radiation
C) requires more space than coaxial cable because it has more insulation
D) not affected by power-line surges or electromagnetic interference

Question 5

Which of the following is a (are)primary reason(s)for networking an organization's computers together?

A) sharing of peripherals such as printers
B) sharing of data
C) enables client/server applications
D) all of the above

Question 6

When data can be transmitted in both directions on a telecommunications line,but not simultaneously,the transmission type is referred to as:

A) switched-line.
B) simplex.
C) half-duplex.
D) full-duplex.

Question 7

Which statement about active RFID tags is not true?

A) They are much more commonly used today than passive tags.
B) They can transmit information continuously, on request, or on a predetermined schedule.
C) They have their own power supply.
D) They are more expensive than passive tags.

Question 8

Which of the following most accurately describes the conversion function of telecommunications?

A) checking for errors and putting the communication into a standardized format
B) changing coding system or speed when moving data between devices on the network
C) keeping track of the status of the network
D) choosing the most efficient path for a message to be sent over the Internet

Question 9

Which company was the most visible early adopter of using RFID for inventory management?

A) Cisco Systems
B) Microsoft
C) Walmart
D) Facebook

Question 10

Which of the following is a term used to describe transmission speed of a network?

A) parity
B) baud
C) MIPS
D) phase

Question 11

Which type of file requires the greatest bandwidth?

A) a Word document page in small font
B) a complex graphic
C) one minute of a voice conversation
D) one minute of a video

Question 12

Which statement describes a major difference between a LAN and a WAN?

A) usage by a corporation
B) geographic distance between devices being networked
C) usage of wireless media
D) all of the above

Question 13

The term Ethernet is often used as a synonym with which of the following types of local area networks:

A) token bus network.
B) token ring network.
C) contention bus network.
D) contention ring network.

Question 14

A common transmission medium that consists of a heavy copper wire at the center,surrounded by insulating material,then a cylindrical conductor,and finally an outer protective plastic covering is called a:

A) fiber-optic cable.
B) coaxial cable.
C) twisted pair of wires.
D) token ring.

Question 15

Which of the following is not a characteristic of a star network topology?

A) costly for small and medium-sized networks
B) relatively easy to identify which cable has failed
C) if central device fails, whole network fails
D) easy to add additional devices

Question 16

Which statement about Bluetooth is not true?

A) It is named after a Viking queen.
B) It is short-range radio technology built into a microchip.
C) It enables cellular communication with home appliances as well as permitting wireless communication between a computer and a mouse, keyboard, and printer.
D) Bluetooth technology standards are available free of royalties to any company that wishes to use them.

Question 17

Which of the following is not a primary function performed by a telecommunications network?

A) transmission of voice
B) archiving data
C) tracking of out-of-service devices
D) transmission of data

Question 18

Which statement about Wi-Fi is not true?

A) Wi-Fi is a wireless technology for local area networks.
B) Wi-Fi is used in buildings with wired LANs to enable mobile access to the organizational networks.
C) Wi-Fi networks are replacing WiMAX networks due to their greater speed and geographic coverage.
D) Wi-Fi networks use a CSMA/CA protocol to avoid message failures.

Question 19

Which type of technology relies on line-of-sight transmission?

A) Bluetooth
B) satellite
C) WiMAX
D) WiFi

Question 20

Which transmission medium requires an unobstructed straight line between the transmitter and the receiver?

A) coaxial cable
B) twisted pair of wires
C) microwave
D) wireless (as in a LAN)

Question 21

The CSMA/CD and CSMA/CA protocols are designed to manage which of the following:

A) low bandwidth.
B) conversion of data from digital to analog.
C) message collisions.
D) passing of token from one device to another.

Question 22

Which of the following networking hardware devices forwards all messages it receives to all devices that are connected to it,whether or not the messages need to go there?

A) gateway
B) hub
C) router
D) switch

Question 23

A private,packet-switched network using the public Internet is referred to as a(n):

A) VPN network.
B) SONET network.
C) ISDN network.
D) DDD network.

Question 24

Using an Infrastructure as a Service provider can enable an organization to avoid major capital investments for network equipment as well as computer servers and storage.

Question 25

Conversion of digital to analog signals so that the signals can travel over conventional telephone lines is accomplished with a device called a modem.

Question 26

A broadband service offered by telephone companies that uses copper wires already installed in homes and offices to connect to the Internet is referred to as:

A) DSL.
B) cable modem.
C) T1.
D) VPN.

Question 27

Early in the decade of the 2010s,two different technologies-WiMAX and LTE (Long Term Evolution)-are competing to become the dominant 4G network technology.

Question 28

Which of the following network protocols is used on the Internet and has become the de facto standard protocol for networking around the world?

A) SNA
B) TCP/IP
C) VPN
D) OSI

Question 29

Which of the following statements about network topologies is not true?

A) A bus topology can be thought of as a simple "linear" topology.
B) A ring topology is wired like a bus, except the ends of the cable are connected.
C) A star topology is like a ring, except the hub is bigger.
D) In a mesh topology, devices are directly connected to two, three, or more other devices in a seemingly irregular pattern.

Question 30

The term modem stands for Modulator of Digital Electronic Messages.

Question 31

Which of the following OSI model layers receives a packet of data from the transport layer and adds header data to it to identify the route the packet is to take to its destination?

A) physical
B) data link
C) network
D) transport

Question 32

When considering network protocols,why is the multilayer OSI model still important?

A) It provides a conceptual framework for how communication takes place in networks.
B) It is specifically designed for Ethernet transmissions, which are quite common.
C) It describes a protocol that is gradually replacing TCP/IP.
D) It was designed by IBM.

Question 33

What is a key difference between 4G and 3G networks?

A) 4G is a wireless network, 3G is not.
B) 4G has higher data transmission rates than 3G.
C) AT&T has an exclusive patent on 4G, but not 3G.
D) 4G networks support smartphones, but 3G networks do not.

Question 34

By 2004,the number of cell phones in use in the United States was greater than the number of wired phones in homes.

Question 35

In the United States,the two giants in the telephone industry in the decade of the 2010s are:

A) T-Mobile and Sprint Nextel.
B) Verizon and AT&T.
C) BellSouth and SBC.
D) GTE and Cingular.

Question 36

A Universal Resource Locator (URL)is used to locate packets in a network.