|
|
|
13-Point Business Development Plan for IT Professionals
Here is a thirteen-step business development plan for IT professionals and consultants. It will help you become the expert in your field and attract all the clients you need:
1. Identify your niche. Without a niche, it is impossible to aim your...
9 Ways to Get an MCSE or CNE Without Wasting $5000+
9 Ways to Get an MCSE or CNE Without Wasting $5000-$9000 by Richard Stooker 1. Buy good certification books. Yes, I know how thick they are - the tests do cover that much material, so what can you do? A teacher is not going to talk that much...
Bluetooth: Personal Wireless Networking
If you've got a wireless network for your computers already,
well, you might get a bit excited about what I'm going to say
next. How would you feel if your PDA, your mobile phone, your
mp3 player and almost everything else you connect to...
Computer Network Installation
Computer network installation can be daunting but with a few guidelines you can install a good network at your home or office. Networking allows computers to share peripherals, and allows one computer to backup the data of another. Also networks can...
Ideal connection builder for small businesses
Small businesses, just like any other big company, need effective business contacts to grow and spread their net wide. But compared to large companies, they face a stiffer challenge in building a network base. Not any more! With the internet proving...
|
|
| |
|
|
|
|
|
|
Internetworking Overview
Internetworking:
Internetworking involves connecting two or more computer
network with some sort of routing device to exchange traffic
back and froth, and to guide traffic on the correct path across
the complete network to their destination . Connecting together
two or more networks with bridges sometimes inaccurately refer
to as internetworking ,but the resulting system is a single
subnetwork ,and users require no internetworking protocol, such
as IP,to traverse it. Briefly, I will present :Network Layers,
Tunneling technique .-which are misunderstood terms in computer
network-
Network layers:
1.physical layer (Repeaters & Hubs): They just move the bit from
one network to an identical network. these are mostly analog
devices and do not understand any thing about digital
protocols(regenerate singles)
2.Data link layer (Bridges & switches): They accept frames
,examine MAC addresses and forward the frames to different
networks ,doing minor protocol translation.
3.Network Layer (Routers): They can connect two networks and do
packet translation ,but translation is increasingly rare.
4.Transport Layer(Transport Gateways): They can interface
between two transport connection
.For example ,allow packets to
flow between a TCP network and SAN network.
5.Application Layer (Application Gateways): They translate
message semantics for the data being moved, such as parsing and
changing header fields between an Internet e-mail and X.400
e-mail.
How Network Differ?
Networks can differ in many ways: 1.They may differ in their
Physical layer :by having different modulation technologies.
2.they may differ in their data link layer by: having different
frame format. 3.they may differ in their network layer by:
having different internetworking protocols.
Networks can be connected by different devices according to the
level of connection.
Tunneling: Tunneling is a technique used for passing information
between two networks of the same type of network, but there is a
different network in between. When the router gets the frame, it
pulls the IP packet out of the frame and drops it into the
payload field of anther frame to send across the WAN. this is
undone at the other end ,allowing the data to be received on the
other end.-More about Tunneling later-
To Be Cont .. T. M . Harahsheh
About the author:
Jordan
|
|
|
|
|
|
