Question 1

In reference to computer communications, what does the term noise mean?
A)audio transmissions
B)voice transmissions that include static
C)electrical disturbances
D)the busy signal that indicates the network is busy

Accepted Answer

In computer communications, the term noise refers to electrical disturbances that can interfere with or disrupt the signal being transmitted. This can result in errors or lost data.

Question 2

Which is the best description of a coaxial cable?
A)one or more pairs of copper wires bundled together
B)a cohesive cable connected at axis points
C)dozens or hundreds of thin strands of glass or plastic that use light to transmit signals
D)a single copper wire surrounded by at least three layers

Accepted Answer

A coaxial cable consists of a single copper wire surrounded by at least three layers - an insulating layer, a woven or braided metal shield, and an outer insulating jacket.

Question 3

What is the term for a communications device that connects multiple computers together and transmits data to its correct destination on a network?
A)a director
B)a router
C)a transmitter
D)a connector

Accepted Answer

A router is a communications device that connects multiple computers together and transmits data to its correct destination on a network. It acts as a gateway between different networks, directing traffic to its intended destination.

Question 4

Which of the following is not a technology used by hot spots?
A)Bluetooth
B)Wi-Fi
C)WiMAX
D)UWB

Accepted Answer

UWB (Ultra-Wideband) is not typically used for creating hot spots; it is used for short-range communication and data transfer.

Question 5

Your new smartphone has a port that enables the transfer of data from one device to another using infrared light waves. What kind of port is this?
A)Bluetooth
B)Wi-Fi
C)IrDA
D)UWB

Accepted Answer

The port that enables the transfer of data from one device to another using infrared light waves is IrDA (Infrared Data Association). Bluetooth and Wi-Fi use radio waves for data transfer, while UWB (Ultra Wide Band) uses low energy radio waves.

Question 6

What is the purpose of hubs and switches?
A)to give a location for each node on a network
B)to translate analog signals into digital signals
C)to provide a central point for cables in a network
D)to minimize the number of dropped network connections in your home

Accepted Answer

Hubs and switches provide a central point for cables in a network. They allow multiple devices to connect and communicate with each other. They collect data from multiple incoming lines and send it to the intended destination. Hubs and switches are used in Ethernet networks to increase the efficiency of data transmission.

Option A is incorrect because the purpose of hubs and switches is not to give a location for each node on a network.

Option B is incorrect because the purpose of hubs and switches is not to translate analog signals into digital signals. That is the purpose of a modem.

Option D is incorrect because the purpose of hubs and switches is not to minimize the number of dropped network connections in your home. That is the role of network boosters or extenders.

Question 7

In a networked environment, no authorized computer user can access data and information stored on other computers on the network.

Accepted Answer

In a networked environment, authorized users can access data and information stored on other computers on the network, subject to appropriate access controls and permissions.

Question 8

You are a technology expert and you have been asked to predict which technology will become the Internet standard for data transmission, replacing T3 lines. Which of the following are you most likely to predict?
A)FTTP
B)ISDN
C)DSL
D)ATM

Accepted Answer

The answer of You are a technology expert and you...

Question 9

Which of the following has the fastest maximum transfer transmission rate?
A)802.11g
B)802.11ac
C)802.11ad
D)UWB

Accepted Answer

The answer of Which of the following has the fastest...

Question 10

Which of the following offers an alternative to infrared communications with high bandwidth transmissions?
A)Bluetooth
B)Wi-Fi
C)cellular radio
D)IrDA

Accepted Answer

The answer of Which of the following offers an alternative...

Question 11

You are purchasing a new mobile phone, and are learning about categories of cellular transmissions. You ask the sales person what the 'G' stands for in the categories 1G, 2G, 3G, and 4G. What does he reply?
A)gigabytes
B)generation
C)global
D)geographic

Accepted Answer

The 'G' stands for generation, indicating the different generations of cellular network technologies. 1G refers to the first generation, 2G to the second generation, and so on up to the current 4G technology.

Question 12

Which of the following communications technologies does not use broadcast radio signals?
A)Bluetooth
B)Wi-Fi
C)IR
D)UWB

Accepted Answer

Bluetooth, Wi-Fi, and UWB use radio signals to communicate wirelessly. However, infrared (IR) communication uses non-radio frequency light waves to transmit data, which makes it the only technology on the list that does not use broadcast radio signals.

Question 13

Which of the following is a 4G standard?
A)EVDO
B)LTE
C)CDMA
D)UMTS

Accepted Answer

LTE (Long-Term Evolution) is a 4G standard used for wireless communication. EVDO, CDMA, and UMTS are all 3G standards.

Question 14

Which of the following has a port to which a cable connects in order to coordinate the transmission and receipt of data, instructions, and information to and from the computer or device containing it?
A)router
B)transmitter
C)network interface card
D)connector

Accepted Answer

A network interface card (NIC) has a port to which a cable connects in order to coordinate the transmission and receipt of data, instructions, and information to and from the computer or device containing it. A router is a networking device that connects multiple devices and networks together. A transmitter is a device that sends out a signal, but does not necessarily have a port for cable connection. Connector is a general term that refers to any device used to connect two or more components together.

Question 15

What kind of communications device sends and receives data and information to and from a digital line, such as ISDN and cable?
A)a hub
B)a router
C)a switch
D)a modem

Accepted Answer

A modem (short for Modulator-Demodulator) is a communication device that sends and receives digital information over a digital line, such as ISDN and cable. It converts the digital signal from the computer to an analog signal that can be sent over the line and then converts the analog signal back to a digital signal for the computer to interpret.

Question 16

What type of media transmits multiple signals simultaneously?
A)broadband
B)bandwidth
C)broadwidth
D)backbone

Accepted Answer

Broadband is a type of media that can transmit multiple signals simultaneously. This is because it offers a wide range of frequencies for data transmission, which allows it to carry different types of signals (such as voice, video, and data) at the same time. Bandwidth refers to the amount of data that can be transmitted over a channel, but it does not necessarily allow for multiple signals to be transmitted simultaneously. Broadwidth is not a recognized term in the field of telecommunications. Backbone refers to the main network infrastructure that carries data between different locations, but it also does not necessarily allow for multiple signals to be transmitted simultaneously.

Question 17

What is a NIC?
A)a central communications device that allows computers and devices to transfer data wirelessly
B)a communications device that enables a computer or device that does not have built-in networking capability to access a network
C)a network that controls Internet communications
D)a network device that controls the IP addresses of the nodes on a network

Accepted Answer

A NIC (Network Interface Card) is a communications device that enables a computer or device that does not have built-in networking capability to access a network. It is installed in a computer's expansion slot or USB port and usually has one or more ports for connecting to a network cable or wirelessly to a Wi-Fi network.

Question 18

What term is used to describe the time it takes a signal to travel from one location to another on a network?
A)bandwidth
B)access time
C)transmission performance
D)latency

Accepted Answer

Latency is the term used to describe the time it takes for a signal to travel from one location to another on a network. It is a measure of the delay between when a request is sent from a device and when the response is received.

Question 19

You want to use the UMB cellular transmission standard on your new mobile phone. Which standard will you use?
A)2G
B)3G
C)4G
D)5G

Accepted Answer

UMB (Ultra Mobile Broadband) was a 4G standard developed by Qualcomm but was eventually discontinued in favor of LTE, which is also a 4G technology.

Question 20

Users connected to a network have access to software on the network.

Accepted Answer

When users are connected to a network, they can access software and files that are stored on the network server(s).

Quiz 10: Communicating Digital Content

In reference to computer communications, what does the term noise mean?

Which is the best description of a coaxial cable?

What is the term for a communications device that connects multiple computers together and transmits data to its correct destination on a network?

Which of the following is not a technology used by hot spots?

Your new smartphone has a port that enables the transfer of data from one device to another using infrared light waves. What kind of port is this?

What is the purpose of hubs and switches?

In a networked environment, no authorized computer user can access data and information stored on other computers on the network.

You are a technology expert and you have been asked to predict which technology will become the Internet standard for data transmission, replacing T3 lines. Which of the following are you most likely to predict?

Which of the following has the fastest maximum transfer transmission rate?

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

You are purchasing a new mobile phone, and are learning about categories of cellular transmissions. You ask the sales person what the 'G' stands for in the categories 1G, 2G, 3G, and 4G. What does he reply?

Which of the following communications technologies does not use broadcast radio signals?

Which of the following is a 4G standard?

Which of the following has a port to which a cable connects in order to coordinate the transmission and receipt of data, instructions, and information to and from the computer or device containing it?

What kind of communications device sends and receives data and information to and from a digital line, such as ISDN and cable?

What type of media transmits multiple signals simultaneously?

What is a NIC?

What term is used to describe the time it takes a signal to travel from one location to another on a network?

You want to use the UMB cellular transmission standard on your new mobile phone. Which standard will you use?

Users connected to a network have access to software on the network.