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