Submitted by: Submitted by l11122
Views: 252
Words: 416
Pages: 2
Category: Philosophy and Psychology
Date Submitted: 10/15/2011 06:12 PM
Compare and contrast packet and circuit switching
Packet switching A WAN switching method that allows you to share bandwidth
with other companies to save money. It operates by taking messages and dividing
them into packets before they are sent. Each packet is then transmitted individually
and can even follow different routes to its destination. Packet switching is good for
bursty data transfers but is not as good for constant data transfer. Examples include
Frame Relay and X.25.
In packet switching methods, messages are broken into small parts called packets.
Each packet is tagged with source, destination, and intermediary node addresses as appropriate.
Packets can have a defined maximum length and can be stored in RAM instead
of on a hard disk. Packets can take a variety of possible paths through the network in an
attempt to keep the network connections filled at time. However, because the message is
broken into multiple parts, sending packets via different paths adds to the possibility that
packet order could get scrambled. Therefore, a sequencing number is added to each
packet.
Packet Switching Advantages I believe would be the Security,Bandwidth used to full potential, Devices of different speeds can communicate, probolay not affected by line failure (rediverts signal) ,Availability do not have to wait for a direct connection to become available, During a crisis or disaster, when the public telephone network might stop working, e-mails and texts can still be sent via packet switching
A few Packet switiching Disadvantages I believe would be Data packets can get lost or become corrupted and Under heavy use there can be a delay.
Circuit switching Circuit switching sets up a line like a phone call. No data transfers
before the end-to-end connection is established. Examples include dial-up
modems and ISDN lines.
The telephone message is sent in one go, it is not broken up. The message arrives in the same order that it was originally...