Networking: Connecting the Digital World, Slides of Computer science

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Networking

Presented by: Abigail Atiwag

Networking refers to the practice of connecting devices and systems to share resources, exchange data, and communicate with each other. Here are key topics related to networking:

Types of Networks

Wireless Networks : Networks that use wireless communication technologies such as Wi-Fi (IEEE 802.11), Bluetooth, cellular networks (3G, 4G, 5G), and satellite communication.

Network Components

Routers : Devices that forward data packets between networks, enabling communication between different networks. Switches : Devices that connect multiple devices within a LAN, forwarding data packets based on MAC addresses.

Network Components

Modems : Devices that modulate and demodulate signals to enable communication over different transmission media (e.g., DSL modem, cable modem).

Network Protocols

Transmission Control Protocol/Internet Protocol (TCP/IP) : A suite of protocols for data communication and networking on the Internet, including TCP, IP, UDP, ICMP, and ARP. Ethernet : A widely used LAN technology that defines protocols for data transmission and media access control (MAC) using Ethernet frames.

Network Topologies

Star Topology : Devices are connected to a central hub or switch, facilitating easy management and scalability. Bus Topology: Devices are connected in a linear or daisy- chain fashion, where data is transmitted along the shared communication medium.

Network Topologies

Ring Topology : Devices are connected in a circular manner, with data traveling in one direction around the ring. Mesh Topology : Devices are interconnected with multiple redundant paths, providing high reliability and fault tolerance.

IP Addressing and Subnetting

Subnetting : Dividing a network into smaller subnetworks (subnets) to optimize address allocation, routing efficiency, and network management.

Network Security

Authentication : Verifying the identity of users or devices accessing the network through methods like passwords, biometrics, and multi- factor authentication (MFA). Encryption : Securing data transmission and communication using cryptographic algorithms (e.g., AES, RSA) to prevent unauthorized access and data breaches.

Network Services and Protocols

Domain Name System (DNS) : Resolving domain names to IP addresses and facilitating domain name registration, resolution, and management. Dynamic Host Configuration Protocol (DHCP) : Automatically assigning IP addresses, subnet masks, default gateways, and other network parameters to devices on a network.

Network Services and Protocols

Simple Network Management Protocol (SNMP) : Monitoring and managing network devices, collecting performance data, and managing network configurations.

Network Management and

Monitoring

Network Troubleshooting : Identifying and resolving network

problems, connectivity issues, performance bottlenecks,

and network optimization.

Cloud Networking and Virtualization

Cloud Computing : Delivering network resources, services, and applications over the Internet using cloud infrastructure (e.g., IaaS, PaaS, SaaS). Virtualization : Creating virtual networks, virtual machines (VMs), and virtualized resources to optimize resource utilization, scalability, and flexibility.