Networking Devices: A Comprehensive Guide for Students, Essays (university) of Network Theory

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Unit 2 : Networking

Lesson [07] Networking Devices

Module Learning Outcomes

▪ LO1. Examine networking principles and their protocols.

▪ LO2. Explain networking devices and operations.

▪ LO3. Design efficient networked systems.

▪ LO4. Implement and diagnose networked systems.

Hubs

▪ A hub interconnects two or more workstations into a local area network. ▪ When a workstation transmits to a hub, the hub immediately resends the data frame to all connecting links ▪ Three basic types of hubs : ▪ Passive ▪ Active ▪ Intelligent

Switch

▪ Switch is a computer networking device that connects

devices together on a computer network by using

packet switching to receive, process, and forward data

to the destination device.

▪ Managed and Unmanaged Switches

Router

▪ A router is a device that forwards data packets along networks. ▪ A router is used to connect at least two networks, commonly two LANs or WANs or a LAN and its ISP's network. ▪ Routers are located at gateways, the places where two or more networks connect. ▪ Routers are the critical devices that keeps data flowing between networks and keeps the networks connected to the Internet.

Repeater

• A network device used to regenerate or replicate a signal. Repeaters are used in transmission systems to regenerate analog or digital signals distorted by transmission loss. Digital repeaters can reconstruct a signal to near its original quality.
• Works in physical layer

Modem

▪ It converts or "modulates" an analog signal from a

telephone or cable wire to digital data (1s and 0s) that a

computer can recognize.

▪ Similarly, it converts digital data from a computer or

other device into an analog signal that can be sent over

standard telephone lines.

▪ Modem stand for "Modulator-Demodulator."

Content Filter

▪ Content-control software is software designed to restrict or control the content a reader is authorised to access.

Load Balancer

▪ Load balancing improves the distribution of workloads across multiple computing resources, such as computers, a computer cluster, network links, central processing units, or disk drives. Load Balancing algorithms

• Round robin
• Weighted round robin
• Least connections
• Least response time

Packet Shaper

▪ The Packet Shaper is a device that sits in between the

campus network and the outside network.

▪ All incoming and outgoing traffic passes through it.

Summary

▪ Networking Devices

▪ Network card ▪ Hub ▪ Switch ▪ Bridge ▪ Repeater ▪ Router ▪ Content Filter ▪ Load Balancer

Thank You