CGS CH 10

For best performance of a communications channel, which of the following should be true

bandwidth should be high and latency low

Who invented the Ethernet

Robert Metcalfe

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

microwave station

Which of the following can be avoided if a computer or mobile device has a motherboard that integrates networking capability

NIC

Microwave transmission involves sending signals from one microwave station to another. What is this often called

fixed wireless

Which of the following is a wireless transmission medium that distributes radio signals through the air over long distances

broadcast radio

How many feet can the range of Bluetooth devices be extended with additional equipment?

325

Which of the following has the fastest transfer rate

FTTP

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

wide area network (WAN)

Which of the following is the least likely technology PANs would use

peer-to-peer

Which of the following is a LAN that uses no physical wires

WLAN

Which of the following is a network standard that specifies no central computer or device on the network should control when data can be transmitted

Ethernet

Which of the following is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a wired network

wireless access point

The amount of data, instructions, and information that can travel over a communications channel sometimes is called which of the following

bandwidth

Which of the following is not an application of communications satellite technology

fixed wireless

Which of the following has the fastest transfer rate

ATM

Which of the following is true of the installation of a network like the one shown in the accompanying figure

It can span a larger distance than a bus network, but it is more difficult.

Which of the following can detect problems—such as why traffic is flowing slowly—on networks that use the TCP/IP protocol

packet sniffer software

As illustrated in the accompanying figure, on what kind of network must all of the computers and devices (nodes) on the network connect to a central device

star network

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

home network

Which of the following terms identifies any network based on the 802.11 family of standards

Wi-Fi

The type of network shown in the accompanying figure, describes a network in which each computer has equal responsibilities and capabilities. What is this kind of network called

P2P

On what kind of network, such as that illustrated in the accompanying figure, do one or more computers act as a server and the other computers on the network request services from the server

client/server

Which of the following kinds of cable consists of a single copper wire surrounded by at least three layers: an insulating material, a woven or braided metal, and a plastic outer coating

coaxial

Which of the following is the maximum transfer transmission rate for communications satellites

2.56 Tbps

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

noise

Which of the following terms is the time it takes a signal to travel from one location to another on a network

latency

On a network such as the one illustrated in the accompanying figure, some servers perform a specific task and can be placed with other servers to perform multiple tasks. What are these kind of servers call

dedicated

The design of computers, devices, and media in a network is categorized as either client/server or peer-to-peer. What is the term used to refer to this characterization

network architecture

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

peer-to-peer network

Which of the following is true of DSL

It is a popular digital line alternative for the small business or home user.

Which of the following kinds of devices is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

communications

Which of the following is true of broadcast radio with regard to physical transmission media

It is slower and more susceptible to noise.

Which of the following is a transmission media on which data, instructions, or information travel

communications channel

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

NIC

As shown in the accompanying figure, which of the following kinds of networks is a network topology in which a cable forms a closed loop, with all computers and devices arranged along it

ring

On a network such as the one illustrated in the accompanying figure, if one node fails, as long as that node is not providing services to other nodes on the network, what happens

only that node is affected

Which of the following defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used

network standard

Digital communications describes a process in which two or more computers or devices transfer all of the following EXCEPT ____.

networks

How many wired and/or wireless computers and mobile devices might a router be able to connect

more than 200

On a network such as the one illustrated in the accompanying figure, what kind of computer controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information

host

Which of the following is the greatest problem with regard to a bus network

The bus itself might become inoperable.

Which of the following is the data transfer rate equivalent to one million bits per second

Mbps

Which of the following kinds of modems is a modem that sends and receives digital data over and information to and from a digital line

broadband

Which of the following defines how a network uses close-range radio signals to communicate between two devices or objects equipped with this technology

NFC

Which of the following are radio waves that provide a high-speed signal transmission

microwaves

Which of the following is a communications device that connects multiple computers together and transmits data to its correct destination on a network

router

Which of the following did Sven Mattisson and Jaap Haartsen invent

Bluetooth

For smaller business and home networks, which of the following allows multiple computers to share a single broadband Internet connection such as through a cable modem or DSL modem

router

What is the maximum transfer transmission rate for Bluetooth

24 Mbps

CGS CH 10 - Subjecto.com

CGS CH 10

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For best performance of a communications channel, which of the following should be true

bandwidth should be high and latency low

Who invented the Ethernet

Robert Metcalfe

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

microwave station

Which of the following can be avoided if a computer or mobile device has a motherboard that integrates networking capability

NIC

Microwave transmission involves sending signals from one microwave station to another. What is this often called

fixed wireless

Which of the following is a wireless transmission medium that distributes radio signals through the air over long distances

broadcast radio

How many feet can the range of Bluetooth devices be extended with additional equipment?

325

Which of the following has the fastest transfer rate

FTTP

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

wide area network (WAN)

Which of the following is the least likely technology PANs would use

peer-to-peer

Which of the following is a LAN that uses no physical wires

WLAN

Which of the following is a network standard that specifies no central computer or device on the network should control when data can be transmitted

Ethernet

Which of the following is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a wired network

wireless access point

The amount of data, instructions, and information that can travel over a communications channel sometimes is called which of the following

bandwidth

Which of the following is not an application of communications satellite technology

fixed wireless

Which of the following has the fastest transfer rate

ATM

Which of the following is true of the installation of a network like the one shown in the accompanying figure

It can span a larger distance than a bus network, but it is more difficult.

Which of the following can detect problems—such as why traffic is flowing slowly—on networks that use the TCP/IP protocol

packet sniffer software

As illustrated in the accompanying figure, on what kind of network must all of the computers and devices (nodes) on the network connect to a central device

star network

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

home network

Which of the following terms identifies any network based on the 802.11 family of standards

Wi-Fi

The type of network shown in the accompanying figure, describes a network in which each computer has equal responsibilities and capabilities. What is this kind of network called

P2P

On what kind of network, such as that illustrated in the accompanying figure, do one or more computers act as a server and the other computers on the network request services from the server

client/server

Which of the following kinds of cable consists of a single copper wire surrounded by at least three layers: an insulating material, a woven or braided metal, and a plastic outer coating

coaxial

Which of the following is the maximum transfer transmission rate for communications satellites

2.56 Tbps

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

noise

Which of the following terms is the time it takes a signal to travel from one location to another on a network

latency

On a network such as the one illustrated in the accompanying figure, some servers perform a specific task and can be placed with other servers to perform multiple tasks. What are these kind of servers call

dedicated

The design of computers, devices, and media in a network is categorized as either client/server or peer-to-peer. What is the term used to refer to this characterization

network architecture

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

peer-to-peer network

Which of the following is true of DSL

It is a popular digital line alternative for the small business or home user.

Which of the following kinds of devices is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

communications

Which of the following is true of broadcast radio with regard to physical transmission media

It is slower and more susceptible to noise.

Which of the following is a transmission media on which data, instructions, or information travel

communications channel

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

NIC

As shown in the accompanying figure, which of the following kinds of networks is a network topology in which a cable forms a closed loop, with all computers and devices arranged along it

ring

On a network such as the one illustrated in the accompanying figure, if one node fails, as long as that node is not providing services to other nodes on the network, what happens

only that node is affected

Which of the following defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used

network standard

Digital communications describes a process in which two or more computers or devices transfer all of the following EXCEPT ____.

networks

How many wired and/or wireless computers and mobile devices might a router be able to connect

more than 200

On a network such as the one illustrated in the accompanying figure, what kind of computer controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information

host

Which of the following is the greatest problem with regard to a bus network

The bus itself might become inoperable.

Which of the following is the data transfer rate equivalent to one million bits per second

Mbps

Which of the following kinds of modems is a modem that sends and receives digital data over and information to and from a digital line

broadband

Which of the following defines how a network uses close-range radio signals to communicate between two devices or objects equipped with this technology

NFC

Which of the following are radio waves that provide a high-speed signal transmission

microwaves

Which of the following is a communications device that connects multiple computers together and transmits data to its correct destination on a network

router

Which of the following did Sven Mattisson and Jaap Haartsen invent

Bluetooth

For smaller business and home networks, which of the following allows multiple computers to share a single broadband Internet connection such as through a cable modem or DSL modem

router

What is the maximum transfer transmission rate for Bluetooth

24 Mbps

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