fortypoundhead.com

WAN Concepts and Terminology

Posted On 2007-05-11 by FortyPoundHead
Keywords: 640-607:Cisco Certified Network Associate (CCNA) Exam
Tags: Cisco Networking 
Views: 1568


A WAN is different from a LAN. Unlike a LAN, which connects workstations, peripherals, terminals, and other devices in a single building or other small geographic area, a WAN makes data connections across a broad geographic area. Companies use the WAN to connect various company sites together so information can be exchanged between distant offices

WAN Connection Types

Leased Lines
A leased line, also known as a point-to-point or dedicated connection, provides a single, preestablished WAN communications path from the customer premises, through a service provider network, to a remote network This connection is reserved by the service provider for the client''s private use.

Circuit Switching
Circuit switching is a switching system in which a dedicated circuit path must exist between sender and receiver for the duration of the "call." Circuit switching is used by the service provider network when providing basic telephone service or Integrated Services Digital Network (ISDN). Circuit switched connections are commonly used in environments that require only sporadic WAN usage. Basic telephone service is typically employed over an asynchronous serial connection.

Packet Switching
Packet switching is a WAN switching method in which network devices share a single point-to-point link to transport packets from a source to a destination across a carrier network. Packet switched networks use virtual circuits (VCs) that provide end-to-end connectivity. Physical connections are provided by programmed switching devices.


About the Author

FortyPoundHead has posted a total of 1974 articles.

 


Comments On This Post

No comments on this post yet!


Do you have a thought relating to this post? You can post your comment here. If you have an unrelated question, you can use the Q&A section to ask it.

Or you can drop a note to the administrators if you're not sure where you should post.


Your IP address is:54.224.155.169

Before you can post, you need to prove you are human. If you log in, this test goes away.




Recent Forum Posts

Advanced search added
dwirch posted on September 23, 2017 at about 13:44 in Site News

Job Spammer: Gaurav Mehta - AgreeYa Solutions
dwirch posted on September 22, 2017 at about 10:35 in Spammers

Job Spammer: Prutha Siri - Javelin Systems
dwirch posted on September 10, 2017 at about 6:15 in Spammers

New security implemented
dwirch posted on September 7, 2017 at about 7:16 in Site News

Malicious IP Checker Companion Tool
dwirch posted on August 12, 2017 at about 20:24 in Site News

Job Spammer: Steve Adams
dwirch posted on August 8, 2017 at about 7:44 in Spammers