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Computer Technology in Communication (Mobile networks (High speed data…
Computer Technology in
Communication
Digital communications
Two or more computers/devices transfer data, instruction and information
Sender, Receiver, Message, Medium, Protocol
Network usage
A set of devices connected by communication devices and transmission media
Categorized
Area of coverage
PAN, LAN, WAN, MAN
Architecture
Client/server
Peer-to-peer
Topology
Ring
• Star
• Bus
• Tree
• Mesh
The Internet
Definition
Internet ( Interconnected Network) and the World Wide Web (www) are NOT the same
Purpose
Access information
Send/post messages
Communicate with friends and family
Communication devices, lines, and transmission media
Definition of Communication Device
Any type of hardware capable of transmitting data, instructions, and information between a sender and a receiver through transmission media
Definition of Communication Lines
A dedicated line is a type of always-on physical connection that is established between 2 communications devices
Definition of transmission media
Materials or substances that carry communication signals
Communication standards and protocols
Ensure compatibility in moving data between the different computers and devices on across networks
Communication Standard
Ethernet
• Token ring
• Wireless Fidelity (Wi-Fi)
• Long Term Evolution (LTE)
• Ultra-wideband
• Infrared Data Association (IrDA)
Communication Protocol
Transmission Control Protocol/Internet Protocol (TCP/IP)
• Bluetooth
• Radio Frequency Identification (RFID)
• Near Field Communication (NFC)
Mobile networks
High speed data from 3G onwards (G=generation)
Faster transmission rates for voice, data, video
Better quality
Bandwidth
Different G different improvements