Khawaja Fareed University of Engineering & Information
Technology
Rahim Yar Khan
Department of Computer Engineering
Data Communication & Computer Networks
Lab
Lab 01: Network Deviecs
1: Purpose:
Objective of this lab is to make students familiar with the network devices and their
functionality.
2: Activity Outcomes:


The student will understand the function and working of the devices
The student will understand that where these devices exists in topologies
Instructor Note:
The Students should have knowledge about topologies, devices that they see daily in their homes
or university.
3: Network Devices:
Some common Network devices are listed below
 Networking cables, Hub, Repeaters, Modem, Access point, Wireless Access
point, Network bridge, Switches, Routers and Gateways
 Hybrid Network Devices: Multilayer switches, Protocol converters, Network
Address Translators (NAT), Firewalls, Multiplexers, Bridge Routers, Servers,
Proxy Servers
4: Definitions of Network Devices
Networking hardware, also known as network equipment or computer networking devices, are
electronic devices which are required for communication and interaction between devices on a
computer network. Specifically, they mediate data transmission in a computer network.
Networking Cables
 Wires that are used to connect two or more computer systems and network
devices are known as networking cables. Examples coaxial cable, optical fiber
cable and twisted pair
Hub
 A devices that is used for interconnect of two or more system over the LAN
network. A signal send from a system is broadcasted to every port on the hub
except the sender port
Bridge
 A device that is used to connect the multiple segments
Repeaters
 Device that receives and retransmit signals at higher power
Switch
 It used packet Switching, Design is similar to hub, configure it and create VLAN,
It is aware of address associated to its ports forward each frames to correct port
Router
 A devices that is used to connect multiple networks, It used path summarization.
It receives the packets and forward to next intermediate devices/router or network
using IP until it reaches the destination node.
Gateway
 An interface providing a compatibility between networks by converting
transmission speeds, protocols, codes, or security measures. It is also a router.
Firewalls
 A software or hardware that is used to implement network policies to make
network and devices secure from intrusion or cyber attacks
Multiplexer/Demultiplexer
 A device that sends data of multiples low speed transmission lines to a single high
speed transmission line or vices versa
Bridge Router
 A devices that perform duties of both bridge and router
Server
 A computer system or device that provides services or manage resources. Main
servers are Web server, file server, email server, Proxy, DNS, Print server etc.
Access Point
 A point or device from where we get access of the network is known as access
point. We can get connected to access point via wire or through wireless
5: Pictorial View of Devices:
Twisted pair
Coaxial
Fibre
Hub
Bridge
Repeater
Router
Switch
Multiplexer
Firewall
Server
6: Assignment:
Q-1: What is medium? Discuss each medium in detail.
Q-2: Describe circuit switched and packet switched network.
Q-3: Differentiate between analog and digital transmission.
Q-4: What is the difference between Hub and Switch?
Q-5: Explain all the servers that are mentioned above.
Q-6: What is modem?
7: Rubrics:
Completeness
Plagiarism
Formatting
Total
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Lab Instructor Signature