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Communication and Technologies - Coggle Diagram
Communication and Technologies
Digital communications
A process where many computing device transfer data, instructions and information whether it is wired or wireless
5 components:
Sender/Sending Device
Receiver/Receiving Device
Message
Medium
Protocol
Network
A set of devices connected by communication devices such as computer, printer or any device that can receive/send data and transmission media
Network Usage
Transferring Funds
Share Software/Hardware
Facilitate Communications
Share Data and Information
Types of network
Area of Coverage
refers to the covered geographical area for a network
Categories:
Personal Area Network ( PAN)
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)
Architecture
Configuration of computers, devices, and media on a network
Two types of Network Architecture
Client/ Server
one or more computer acts as server which control access to software, hardware and other resources on the network while other computers is a client who request services from the server
Provides a centralized storage area for programs, data and information
Typically consist of 10 or more computers
Peer-to-Peer
Each computer acts a peer which have an equal capabilities to share software, hardware, data and information with other computers on the network
Connect less than 10 computers
Topology
Arrangement or layout of a devices on a network
Consists of 5 basic topologies
Ring
Star
Bus
Tree
Mesh
The Internet
Interconnected Network which is a global collection of computer networks
Purposes :question:
To access information
Send/Post Messages
Communication
Communications
Devices
Any type of hardware that can transmit data, instructions or information between sender and receiver through a transmission media
Example: Modems, wireless access points, routers, network cards, hubs, and switches
Lines
A type of dedicated line that always-on physical connection between two communication devices
Example: Cable, digital subscriber line, fiber to the premises (FTTP), T-Carrier, Asynchronous Transfer Mode (ATM)
Transmission Media
Physical or wireless materials that can carry communication signals
Example:
-Physical: Twisted pair cable, coaxial cable, fiber-optic cable
-Wireless: Infrared, broadcast studio, cellular video, microwaves, communication sattelites
Mobile Networks
Types of Mobile Networks
0G (pre-mobile telephony technology)
1G (voice only by analog signals) : 1981
2G (Voice and Data with added SMS) : 1992
3G (Voice, data, and video added MMS with high speed) : 2001
4G (enhanced 3G) : 2010
5G, 6G (future generations) : 2020 and beyond
Speeds:
1G : 2 Kbps
2G : 64 Kbps
3G : 2 Mbps
4G : 100 Mbps
5G: 10 Gbps
Communication Standards and Protocols
It is important to ensure compatibility in transferring data between different computers and devices
Standard
A guidelines that specify how computers accessing the medium, type of medium, speeds, and types of cable used whether it is wired or wireless
Network Standards
Ethernet
Token Ring
Wireless Fidelity (Wi-Fi)
Long Term Evolution (LTE)
ultrawideband
Infrared Data Association (IrDA)
Protocol
A standard that outlines characteristic of how two devices communicate on a network
Network Protocols
Transmission Control Protocol/Internet Protocol (TCP/IP)
Bluetooth
Radio Frequency Identification (RFID)
Near Field Communication (NFC)