Info Tech Chap 6

The most common type of Ethernet cable found on the market today is 10000BaseT, which is also known as

10 Gigabit Ethernet.

A short-range wireless networking standard used to connect peripheral devices to computers, tablets, and smartphones.

Bluetooth

Operates at 2.4 gigahertz, which is within the RF spectrum

Bluetooth

This is a wireless technology for shorter range communications.

Bluetooth

Which technology is a short-range wireless networking standard used to connect peripheral devices to computers, tablets, and smartphones?

Bluetooth

Cable

Provides speeds exceeding 100 Mbps

VDSL

Provides speeds up to 52 Mbps downloading and 16 Mbps uploading

Which application-level network protocol is used to send email?

SMTP

Which technology enables people to communicate wirelessly to and from nearly anywhere in the world?

Cellular

_____ technology enables people to communicate wirelessly to and from nearly anywhere in the world.

Cellular

The most popular networking standard in the world is _____.

Ethernet

A twisted-pair cable typically has between one and four wires.

False

Satellite internet is faster than either cable or DSL.

False

Satellite internet is less prone to latency problems than cable or DSL.

False

Shielded twisted-pair cable is the most commonly used type of twisted-pair cable in networking and phone systems.

False

True or False: A narrowband medium carries much more data per second than a broadband medium.

False

True or False: A network adapter consists of hardware and/or software that allows communication between similar networks.

False

True or False: A web browser may use Post Office Protocol 3 (POP3), along with several other protocols, to manage site traffic.

False

True or False: The most commonly used wireless technology today is hi-fi (short for high fidelity).

False

True or False: The term IEEE 802.11 refers to the organization that maintains the standards for various types of computer and communication technologies and the date on which the Wi-Fi standard was put in place.

False

True or false: A cabling technology is under development that could deliver communications at speeds roughly 1000 times faster than technology available today.

False

True or false: A hub is faster than a switch.

False

This graphic shows the basic components and structure of which type of cable?

Fiber-optic cable

A web browser receives and displays web pages using primarily

Hypertext Transfer Protocol (HTTP)

A web browser uses primarily _____ to receive and display web pages.

Hypertext Transfer Protocol (HTTP)

To receive and display web pages, the protocol a web browser primarily uses is _____.

Hypertext Transfer Protocol (HTTP)

In the TCP/IP protocol, each device on a network has a unique identifier called its

IP address.

A process called network address translation (NAT) automatically changes the _____ on the data going in and out of the router as needed.

IP addresses

Carries data between a PC and peripherals using low-frequency light

Infrared

_____ technology transmits data as light waves, whereas microwave technology transmits data as radio waves.

Infrared

Which of the following organizations is responsible for global coordination of the assignment of IP addresses?

Internet Assigned Numbers Authority (IANA)

Which protocol is used to manage a server-based email interface?

Internet Mail Access Protocol (IMAP)

_____ is used to manage a server-based email interface.

Internet Mail Access Protocol (IMAP)

In the Open Systems Interconnection (OSI) reference model, which protocol is commonly used at the Network layer?

Internet Protocol (IP)

Which of the following statements describes a broadband medium?

It's a communications medium capable of carrying at least 256 kilobits per second (Kbps).

Which of the following statements does not describe a T line?

It's a short-range wireless networking standard used to connect peripheral devices to computers.

Which of the following statements best describes a hybrid topology?

It's a system that mixes topologies in a network.

Which of these statements describes an extranet?

It's an extension of an intranet that allows specified external users to access certain resources in the organization's network.

Which of the following statements does not describe the Ethernet protocol?

It's the least popular network protocol.

Operates in the uppermost end of the RF frequencies, and is used for direct point-to-point communication

Microwave

Which of the following is the main protocol suite used today for internet networking, as well as most business and home networks?

TCP/IP

Both cable and DSL

Uses a modem or terminal adapter which may also serve as a wireless access point

Has frequencies above those of infrared light and measured in terahertz

Visible colors

The most commonly used wireless technology today.

Wi-Fi

The most commonly used wireless technology today is

Wi-Fi.

The way a network is designed and built is referred to as network _____.

architecture

Which medical tool uses fiber-optic technology?

gastroscope

A set of rules for how things will happen is called a _____.

protocol

What seven-layer model explains how different kinds networking software work together?

the Open Systems Interconnection (OSI) reference model

Each network adapter has a unique hardware identifier consisting of a 12-digit number made up of six two-digit pairs. What is this identifier called?

the media access control (MAC) address

SSID is

the name of your network.

In this illustration of a wireless network, which hardware device serves as the wireless access point?

the wireless router

As hardware technology has developed, Ethernet has used different types of cable. Which of the following is the most common type found on the market today?

10Base5

How many bytes do IPv6 addresses consist of?

16

The use of fiber optics dates back to the

1700s.

In which decade was Internet Protocol (IP) technology developed?

1970s

Bluetooth 5 allows data to be transferred between two devices at a rate of

2 Mbps.

How many bytes do IPv4 addresses consist of?

4

Which class of mobile broadband service is capable of providing around 9.5 megabits per second (Mbps) throughput?

4G

4G (or 4th generation) mobile broadband service provides around _____ megabits per second (Mbps) throughput.

9.5

Which of the following statements does not describe a blade-mounted server?

A hardware problem with this server will take down only one server, not an entire rack of servers.

Devices that can have wireless communications capabilities include

All of the choices are correct.

_____ is a short-range wireless networking standard with a connectivity range of 15 to 20 feet.

Bluetooth

The latest Bluetooth specification, which can communicate over 800 feet, is called

Bluetooth 5.

Which of the following statements describes a rack-mounted server?

It's more or less a fully functioning computer (although it lacks a keyboard, mouse, or monitor) that's typically mounted in a rack unit with other servers.

Which of the following statements describes a default gateway?

It's the port through which data leaves the router to go to another network.

Which of these statements does not describe a metropolitan area network (MAN)?

It's typically wireless, using either Bluetooth or IrDA technology.

Which network coverage classification describes a private network of computers located in the same building or group of nearby buildings?

LAN

DSL

Maximum speed depends on distance to provider's box in your neighborhood

_____ transmission sends and receives several related bits simultaneously.

Parallel

A _____ contains a larger bundle of individual lines than a _____ and therefore transfers data at faster speeds.

T3 line; T1 line

The suite of protocols referred to as _____ is the main protocol suite used today for internet networking, as well as most business and home networks.

TCP/IP

What is the purpose of the hub and switch?

They connect the devices in a network.

In the Open Systems Interconnection (OSI) reference model, one of the most common protocols used at the _____ layer is Transmission Control Protocol (TCP).

Transport

Communication satellites circle the Earth in a geosynchronous orbit.

True

In each pair of wires in twisted-pair cable, one wire is a solid color and one is the same color striped with white.

True

Individual consumers can have their own satellite dish with its own transceiver.

True

The pairs of wires in twisted-pair cable are twisted to minimize EMI.

True

The shielding in shielded twisted-pair cable is designed to minimize EMI from outside the cable.

True

The two-way radio on a satellite that sends and receives data is called a transponder.

True

True or False: An email application may use Post Office Protocol 3 (POP3) to receive mail.

True

True or False: In Microsoft Windows, the preferred name for peer-to-peer architecture is workgroup.

True

True or False: The most commonly used wireless technology today is Wi-Fi.

True

True or False: The term Carrier Sense Multiple Access with Collision Detection (CSMA/CD) refers to the error detection and correction process that occurs in bus topology.

True

True or false: A medium in communications is some kind of network.

True

True or false: A network operating system is what allows resources, such as printers, to be shared by many users.

True

True or false: RF can work with voice and gesture controls.

True

True or false: To set up a device to join a wireless network, you need to know the network's SSID.

True

Carries sound in the 300 to 3000 hertz frequency range

Voice frequency

A network that spans a large geographical area, connecting two or more LANs, is called a(n) _____.

WAN

The first choice for setting up encryption for wireless security should be

WPA3.

In cellular technology, what is a cell?

a calling area that has its own cellular antenna

Communication involves someone who sends a message and someone who receives a message, as well as

a communication medium and a common protocol.

What is a local area network (LAN)?

a private network that serves the needs of a business, organization, school, or residence with computers located in a single building or group of nearby buildings

Which hardware device is used to direct network traffic on a large scale—for instance, to other devices and even other networks?

a router

In a network designed with client/server architecture, which of the following would not be a client?

a server

Setting up a network allows users to share files, a printer, and

an internet connection.

Each different combination of Wi-Fi speed, maximum distance, and frequency range is referred to as a(n)

band.

The _____ is the overall data throughput per second of a transmission medium.

bandwidth

The overall data throughput per second of a transmission medium is its

bandwidth.

The overall throughput per second of a transmission medium is its

bandwidth.

A _____ might be used to connect the networks in two different buildings or departments of a company, both of which are set up using the same topology.

bridge

A communications medium capable of carrying at least 256 kilobits per second (Kbps) is referred to as a(n) _____ medium.

broadband

Describes a communications medium capable of carrying at least 256 Kbps.

broadband

In a physical _____ topology, all computers and devices are linked by a single line of cable with two endpoints.

bus

In which topology are all computers connected via a single cable?

bus

This graphic illustrates a _____ topology, in which all computers and devices are linked by a single line of cable with two endpoints.

bus

Best choice for a network of 20 computers

client/server

Type of network that requires a computer with a server operating system

client/server

This graphic illustrates which type of network architecture?

client/server architecture

In _____ architecture, one or more _____ is responsible for managing network traffic and sharing network resources.

client/server; servers

Network operating systems support both network servers and user computers, which are referred to as

clients.

Commonly used for cable TV connections.

coaxial cable

Which type of cable consists of an insulated copper center wire grounded by a shield of braided wire?

coaxial cable

Which type of cable is shown in this graphic?

coaxial cable

A connection that enables computers in different locations to send data to one another is called a

communications medium.

Orbiting device containing several transponders.

communications satellite

Analog data is

continuously variable data.

The port through which data leaves the router to go to another network is called the

default gateway

When a different IP address is assigned each time users log on to their computers or devices, the IP address is

dynamic.

One disadvantage of Wi-Fi Direct compared with Bluetooth is that Wi-Fi Direct uses more

energy.

An extension of an intranet that allows users to access data via the internet is called a(n) _____.

extranet

Which type of communications media uses a string of glass to transmit beams of light?

fiber-optic cable

Two people talking on the telephone is an example of _____ transmission.

full-duplex

Hardware and/or software that enables communication between dissimilar networks is called a _____.

gateway

The unlabeled server in the center of this diagram is a _____, which enables communication between dissimilar networks.

gateway

Satellites have a(n) _____ orbit, which means they go around the Earth at the same speed that the planet rotates, making them appear stationary when viewed from the ground.

geosynchronous

Communications protocols

govern the exchange of information.

Two-direction communication that isn't simultaneous, such as that of a walkie-talkie, is known as _____ transmission.

half-duplex

Which type of data transmission allows two-directional communication but not simultaneously?

half-duplex

Multitasking involves

handling several requests at one time.

The term used for a Wi-Fi-enabled location is a(n)

hotspot.

A _____ was an early version of a switch and is now obsolete.

hub

This element receives packets of data and sends that data out to all of the connected ports.

hub

Companies commonly combine network types to suit their particular situations. What is the term for a system that mixes topologies in a network?

hybrid typology

IrDA is the standard for which type of connection?

infrared

Transmits data as light waves instead of radio waves.

infrared technology

When a Wi-Fi device connects to a wireless access point, it's said to be operating in _____ mode.

infrastructure

Which of the following is a disadvantage of fiber-optic cable?

installation costs

A(n) _____ is a private network within an organization that uses the same basic protocols as the internet but is restricted to only the staff of that organization.

intranet

Which network user classification restricts access to only the staff of a company?

intranet

A private network within an organization that uses the same basic protocols as the internet but is restricted to only the staff of that organization is called a(n)

intranet.

The _____, or delay, involved in satellite internet access limits the performance of this service to levels far below those of cable and DSL.

latency

In the electronics world, the chief drawback of infrared technology is that it requires

line of sight.

A switch physically connects the computers in a _____ and is able to read the data in each incoming data packet, determine its destination, and then forward it to the correct computer.

local area network (LAN)

A private network that serves the needs of a business, organization, school, or residence with computers located in a single building or group of nearby buildings is called a

local area network (LAN).

A wide area network (WAN) spans a large geographical area, connecting two or more

local area networks (LANs).

Each network adapter has a unique hardware identifier called a(n) _____ address, which is a 12-digit number that consists of six two-digit pairs.

media access control (MAC)

The graphic illustrates a _____ topology—the physical topology of the internet—in which each computer or device is connected to multiple computers or devices.

mesh

Which topology is used on the internet?

mesh

Which topology is the physical topology of the internet and ensures that the network won't fail if some of the computers or devices stop functioning?

mesh topology

The ability to stream content from a tablet or phone to a TV is called

mirroring.

The term _____ refers to the way a network is designed and built.

network architecture

The central pathway of a network.

network backbone

A _____ is a network adapter that's added to the computer as an expansion device.

network interface card (NIC)

A _____ (or layout) is the pattern by which a network is organized.

network topology

When you connect a Bluetooth-enabled peripheral device, such as a headset or printer, to a computer or smartphone, you _____ the devices.

pair

Perform this action with a new Bluetooth headset so that the headset can communicate with your smartphone.

pair the headset with the smartphone

This graphic compares how bits of data travel in serial transmission versus _____ transmission.

parallel

Best choice for a network of three computers

peer-to-peer

Type of network in which each computer maintains its own list of authorized users

peer-to-peer

Type of network in which shared files may not be accessible if a certain user is not signed into his computer

peer-to-peer

Which type of network architecture has no dedicated servers?

peer-to-peer

A network design in which there is no dedicated server is called

peer-to-peer architecture.

This graphic illustrates a _____, which has a very small range and is used primarily by one person.

personal area network (PAN)

This graphic illustrates which type of network?

personal area network (PAN)

Paired Bluetooth devices that are communicating with each other are operating within a personal-area network (PAN) or

piconet.

A set of rules for how things will happen is called a

protocol.

Bluetooth uses this medium to connect two devices.

radio signals

A cellular tower relays

radio waves.

A _____ (also called an amplifier) receives signals along a network, increases their strength, and then sends them along the network's communications path.

repeater

Network hardware that strengthens and amplifies a network signal is called a

repeater.

A physical _____ topology is rarely used anymore, because if one computer or device is removed or one segment of cable has a break in it, the entire network will fail.

ring

In which topology does data travel in one direction in a closed loop until the data reaches its destination?

ring

Directs network traffic across different network segments, such as between LANs.

router

Which of these types of transmission sends only one bit of data at a time?

serial

A form of data transmission that sends one bit at a time.

serial transmission

An announcement made over a public address system at a sports arena is an example of which type of transmission?

simplex

Which fiber-optic cable mode is used for long distances?

single-mode

A cell phone that can run applications and access the internet is referred to as a _____.

smartphone

In a physical _____ topology, multiple computers and peripheral devices are linked to a central gathering point, such as a switch or a router, in a point-to-point configuration.

star

In which topology do all devices connect to a hub or switch?

star

Which physical network topology links multiple computers and peripheral devices to a central hub?

star

In which type of physical topology are multiple computers and peripheral devices linked to a central gathering point, such as a switch or a router, in a point-to-point configuration?

star topology

In this graphic, the gateway is a server connecting a _____ network to a _____ network.

star; ring

Network operating systems must keep data secure while it's being transmitted or

stored.

A _____ physically connects the computers in a local area network (LAN) and is able to read the data in each incoming data packet, determine its destination, and then forward it to the correct computer.

switch

A hardware device that physically connects computers within a LAN.

switch

This element determines which address the packet of data should be delivered to and sends it only to that destination.

switch

In a token ring topology, a _____ isn't a physical object but rather permission to speak.

token

In a _____ topology, the computers in a network constantly pass a token among themselves, and if a computer has nothing to send, it passes the token to the next computer in the circle.

token ring

The pattern by which a network is organized is referred to as network _____.

topology

An extra PC that is set up to run a server operating system is called a

tower server.

In a bus topology, each computer has a network card with a _____: a device that sends messages along the bus in either direction.

transceiver

A communications satellite is a solar-powered electronic device that contains several small, specialized radios called

transponders.

Instead of leasing T lines to connect distant offices across the country, a company can establish a _____ by having each branch office set up a local internet connection.

virtual private network (VPN)

A(n) _____ spans a large geographical area, connecting two or more local area networks (LANs).

wide area network (WAN)

Many hotels, airports, schools, and restaurants provide Wi-Fi hotspots, which are locations that have one or more

wireless access points.

Large organizations typically have multiple racks of switches with hundreds of cables running to and from them; these switches are usually stored out of the way in enclosures called

wiring closets.

What is WiMAX?

a wireless technology with a larger usable range than Wi-Fi

What is another name for the central pathway of a network?

network backbone

A network adapter that's added to the computer as an expansion device is called a

network interface card (NIC).

This graphic compares how bits of data move through a serial cable versus a parallel cable. In which type of transmission does a group of bits travel simultaneously over different paths?

parallel transmission

Which type of network design has no dedicated server?

peer-to-peer

A _____ directs network traffic but on a larger scale than a switch.

router

What type of communications system is illustrated in this graphic?

satellite

A _____ transmission sends one bit of data at a time; it's like a narrow path that only one person can walk on at a time.

serial

There are two types of twisted-pair cable: _____ and _____.

shielded; unshielded

A special type of internet-based wide area network (WAN) called a _____ has become increasingly popular among large businesses that need a cost-effective way to expand their networking options.

virtual private network (VPN)

FTTH provides internet access to homes and businesses at speeds of up to

1 Gbps.

____ mode occurs when two computers connect to one another directly without an access point.

Ad hoc

True or False: Unshielded twisted-pair (UTP) cable is more expensive than shielded twisted-pair (STP) cable and is used in environments where electromagnetic interference might be a problem.

False

_____ cable is often used as the central pathway of a network, because it can transmit a large amount of data very quickly.

Fiber-optic

Which of the following statements describes a twisted-pair cable?

It consists of pairs of copper wires that are individually wrapped in plastic and bound together by another plastic casing.

Which of the following statements describes the Ethernet protocol?

It has become such a popular type of network that any network can be assumed to be Ethernet unless otherwise specified.

_____ is a method by which multiple data streams (either analog or digital) are combined and carried on a single wire.

Multiplexing

The abbreviation SMTP stands for _____, which is a protocol used to send email.

Simple Mail Transfer Protocol

Although _____ were considered very fast when first developed, they have been surpassed by cable and DSL.

T1 lines

Neither cable nor DSL

Ties up your land-based phone line while it is operating

True or False: The term IEEE 802.11 refers to the organization that maintains the standards for various types of computer and communication technologies and the number of the standard that governs Wi-Fi.

True

True or False: Unshielded twisted-pair (UTP) cable is available in different categories: the higher the category number, the faster the data transmission the cable can reliably support.

True

_____ transmit information through the air in much the same way a battery-operated radio sends radio waves.

Wireless media

The term latency refers to the _____ involved in satellite internet access that limits the performance of this type of service to levels far below those of cable and DSL.

delay

Data moves most efficiently from one computer to another when it's _____—that is, when it starts out as bits (1s and 0s) and stays that way as it travels to its destination.

digital

A(n) _____ is a transmission station on the ground that receives signals from transponders.

earth station

The magnetic field that's generated when electricity passes through a wire is known as

electromagnetic interference.

Which type of communications system does this graphic illustrate?

microwave

The term 3G, which stands for 3rd generation, is a class of _____ that provides about 3 megabits per second (Mbps) throughput.

mobile broadband service

A network topology is the pattern by which a _____ is organized.

network

At the most basic level, a _____ consists of two or more devices connected by one or more communications media, such as wires, telephone lines, and wireless signals.

network