Lesson 9: Networks and Network Devices Flashcards
Connects the sending device to transmission media
Communications device
Accepts the transmission of data, instructions, or information
Receiving device
Initiates an instruction to transmit data, instructions, or information
Sending device
Means by which the data, instructions, or information travel
Transmission media or a communications channel
- Facilitating communications
- Sharing hardware
- Sharing data and information
- Sharing software
- Sharing files
Common ways you will interact with a network
A _____________ (P2P) network, sometimes called a file sharing network, allows users to access one another’s hard drives or cloud storage and exchange files directly via a file sharing program
peer-to-peer
This allows users connected to a network to exchange money from one account to another via transmission media
Electronic funds transfer (EFT)
An __________ is an internal network that uses Internet technologies
intranet
An __________ allows customers or suppliers to access parts of its intranet
extranet
A __________ sends signals and data through cables
wired network
A __________ sends signals through airwaves and usually does not require cables
wireless network
A network standard that defines how high-speed cellular transmissions use broadcast radio to transmit data for mobile communications
LTE (Long Term Evolution)
__________ means receiving data while upstream rate means sending data
Downstream rate
LTE is developed by ____________________ (3GPP)
Third Generation Partnership Project
Two competing standards for LTE are __________ (Worldwide Interoperability for Microwave Access) and UMB (__________)
WiMax… Ultra Mobile Broadband
A navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites.
GPS (global positioning system)
__________ consists of programs and apps that:
1. Help users establish a connection to another computer
2. Manage the transmission of data
3. Provide an interface for users to communicate with one another
Communications software
This is the method by which computers and devices are physically arranged on a network
Topology
The logical design of all devices on a network
Network architecture
- Bus Network
- Ring Network
- Star Network
- Mesh Network
Common network topologies
All devices attach to a central cable, called a bus, that carries the data. If the bus fails, the devices on the network will no longer be able to communicate
Bus network
All devices interconnect with one another. If a single device fails, the rest of the network will continue to function by communicating via an alternate route
Mesh network
Two types of mesh topologies:
1. __________ (each device is connected to every other device on the network)
2. __________ (each device may or may not be connected to all other devices on the network)
Full mesh topology … Partial mesh topology
Data travels from one device to the next in a sequential fashion. If one device fails, communication on the network could cease to function. No longer common
Ring network
Each device on the network is attached to a central device, such as a server or switch. If the central device fails, the other devices will be unable to communicate
Star network
Two or more star networks may be joined together using a bus to for a __________. They are often used in schools and businesses
Tree topology
On a __________, one or more computers act as a server and the other computers on the network request resources from the server
Client/server network
A computer or mobile device on the network that relies on the server for its resources
Client
Two common network architectures
- Client/server
- Peer-to-peer
Client/server networks are often controlled by a __________
network administrator
With this type of network, computers communicate directly with one another and can share one another’s resources. A network administrator is not required
Peer-to-peer (P2P)
A type of P2P network where users share files with one another over the Internet
Internet peer-to-peer (Internet P2P) network
Connects computers and devices in a limited area, such as a home, a school, or a small office complex
local area network (LAN)
A wireless LAN (__________) is a LAN that uses wireless connections
WLAN
A network that connects devices in a large geographic region, such as a multinational company or national retail chain. The Internet is classified as this.
wide area network (WAN)
A type of wide area network that is operated by a city or country
metropolitan area network (MAN)
Connects personal digital devices within a range of approximately 30 feet. Typically connected via bluetooth
personal area network (PAN)
A form of PAN that consists of small, lightweight biosensors implanted in the body
body area network (BAN)
Specifies the amount of data your provider offers you per month
Data plan
Guidelines that specify the way computers access a network, the types(s) of hardware used, data transmission speeds, and the types of cable and wireless technology used
Network standards
A standard that outlines characteristics of how devices communicate on a network
Protocol
The __________ standard controls how network interface cards (NICs), routers, and modems share access to cables and phone lines, as well as dictate how to transmit data
Ethernet
Most businesses use a standard, such as EDI (____________________) that define how business documents travel across transmission media
electronic data interchange
A set of protocols that is used by all computers and devices on the internet
TCP/IP (Transmission Control Protocol/Internet Protocol)
______ defines how data is routed through a network, and ____ specifies that all computers and devices connected to a network have a unique IP address
TCP … IP
Devices communicating with one another over a short range
Bluetooth
Remote controls or other data transmission within close proximity
IrDA (infrared data association)
Uses radio signals to communicate data over cellular networks
LTE
Used in credit cards, smartphones, and tickets to facilitate close-range communication
NFC (near field communication)
Radio signals transmitted through antennas, often found in tollbooth transponders or embedded chips in animals
RFID (radio frequency identification)
Low-energy radio technology for short-range, high-bandwidth communications
UWB (ultra-wideband)
Hot stops and wireless home and small business networks using TCP/IP
Wi-Fi
A series of network standards that specifies how two wireless devices communicate over the air with each other
802.11
A __________ is a type of always-on physical connection that is established between two communications devices
dedicated line
A process that combines multiple analog or digital signals into a single signal over a shared medium
Multiplexing
_____ provide a central point for network cables in a network and are used to transfer data to all devices
Hubs
__________, used more frequently than hubs, also provide a central point for network cables in a network; however, they transfer data only to the intended recipient
Switches
_________, which connect two or more networks and direct, or route, the flow of information along the networks or Internet so that multiple users can share a connection
Routers
A __________ connects a sending or receiving device, such as a computer, to a communications channel, such as the Internet
modem
Also called a broadband modem, it is a communications device that sends and receives data and information to and from a digital line
Digital modem
A __________ uses a cable TV connection
cable modem
A __________ uses standard copper telephone wiring
DSL modem
A __________ sends digital data and information from a computer to an ISDN line and receives digital data and information from an ISDN line
ISDN (Integrated Services Digital Network)
