انت هنا الان : شبكة جامعة بابل > موقع الكلية > نظام التعليم الالكتروني > مشاهدة المحاضرة

Introduction to WAN

الكلية كلية تكنولوجيا المعلومات     القسم قسم شبكات المعلومات     المرحلة 4
أستاذ المادة وسام سمير عبد علي بهيه       30/10/2013 20:15:20
A WAN is a data communications network that operates beyond the geographic scope of a LAN.

WANs are different from LANs in several ways. While a LAN connects computers, peripherals, and other devices in a single building or other small geographic area, a WAN allows the transmission of data across greater geographic distances. In addition, an enterprise must subscribe to a WAN service provider to use WAN carrier network services. LANs are typically owned by the company or organization that uses them.

When an enterprise grows to include branch offices, e-commerce services, or global operations, a single LAN network is no longer sufficient to meet its business requirements. Wide-area network (WAN) access has become essential for larger businesses today.

There are a variety of WAN technologies to meet the different needs of businesses and many ways to scale the network. Adding WAN access introduces other considerations, such as network security and address management. Consequently, designing a WAN and choosing the correct carrier network services is not a simple matter.

WANs use facilities provided by a service provider, or carrier, such as a telephone or cable company, to connect the locations of an organization to each other, to locations of other organizations, to external services, and to remote users.
WANs generally carry a variety of traffic types, such as voice, data, and video.



Table of Contents of lecture

Introduction to WAN
What is a WAN?
Three major Characteristics of WANs:
Why Are WANs Necessary?
The Evolving Enterprise
The Hierarchical Design Model
WANs and the OSI Model
WAN Physical Layer Terminology
WAN Devices

Please download the PDF to get full Content.

المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .