Technical Definition of LAN and WAN

The technical definition of LAN and WAN does not depend upon the Graphical Distance. So, we
can define LAN and WAN as follow:
The technology which we use for the communication on the Physical Layer and Data Link Layer decides whether we are doing LAN Communication or WAN Communication.

LAN (Local Area Network)
If we are using Ethernet Technology which run on Physical and Data Link Layer for the
communication between two computers even they are l00 kilometers far from each other then
it is called LAN (Local Area Networks).

WAN (Wide Area Network)
If we are using V,35, or EIA/TIA-232 which run on Physical Layer and PPP or HDCL Protocol on
Data Link Layer for the communication between two Computers even they are placed nearer to
each other it will be WAN (Wide Area Network).

Comments

Post a Comment

Popular posts from this blog

Lecture 4: Network Cabling and Tools

Image
3 Types of Ethernet cable are used in Networking 1-Straight through Cable 2-Cross Over Cable 3-Roll over cable Straight through cable, Cross over Cables are used for data transfer While Rollover cable is used to configure routers / switches / network devices. To remember which type of cable you should use, follow these tips:  To connect two serial interfaces of 2 routers we use serial cable .   To specify when we use crossover cable or straight-through cable, we should remember: Group 1: Router, Host, Server Group 2: Hub, Switch One device in group 1 + One device in group 2: use straight-through cable Two devices in the same group: use crossover cable For example: we use straight-through cable to connect switch to router, switch to host, hub to host, hub to server… and we use crossover cable to connect switch to switch, switch to hub, router to router, host to host HOW TO MAKE A NETWORK CABLE: 1. Unroll the required length of network cable and add a little extr...
Read more

Lecture 6(b): Subnetting Examples

Image
Before Going to Subnetting Examples put attention on below Slide it will help to solve exam Question: Subnetting Class C: Subnetting Class B: Subnetting Class A:  Note:According to Cisco in Subnetting First and Last Subnet is not Valid because 1st subnet contain Network Address of IP whom we go to Subnet in Last subnet Contain Broadcast Address,Practically we used that subnets otherwise it will wastage of IP's.Normally in exam question may be mention that 1st/last subnet included or excluded. Be Prepare for Quiz.In Next Post i Will explain VLSM and Route Summarization.
Read more

Lecture 3(a) :Transmission Media

Image
Media:   Sending of data from one device to another is called transmission of data , Medium used to transmit the data is called Media like (Cables,Waves,Laser). Transmission of data through Medium is called Transmission Media. Types of Media:     Guided (Wired)     Twisted Pair ,Coaxial cable, Fiber Optics .        Unguided (Wireless)                 Radio waves,Microwaves,Infared waves.  Lets Start From Guided Media: Cable are divided into three types according to their speed, cost, need etc. 1. Twisted pair cable 2. Co-axial cable 3. Fiber optic cable 1. TWISTED PAIR CABLE: A twisted pair wire consist of two bunches of thin copper wire and enclosed separately in a plastic insulator with conductor. One the wire is used to...
Read more