Questions in Communication Network

[lengoanhcat]

I only learn a few about communication network and how it works. But I got a large amount of confusion and many problems. Can you show me someplace I can find information about packet switching, circuit swithching and statistics in communication technology and communication techology stimulation or applet?
Many thanks.:|

Added after 15 minutes:

Sorry, I means technology simulation or applets

 

[m_llaa]

there are many book
one of the best and introductory book is "Computer Networks" by Andrew S Tanenbaum

 

[rohitgalatage]

another good book

data Comminications and Networking by Behrouz A. Forouzan ..Mcgraw Hill Pub.

 

[vicky]

hi dear


packet switching Last modified: Wednesday, January 30, 2002


PACKET SWITCHING

Refers to protocols in which messages are divided into packets before they are sent. Each packet is then transmitted individually and can even follow different routes to its destination. Once all the packets forming a message arrive at the destination, they are recompiled into the original message.
Most modern Wide Area Network (WAN) protocols, including TCP/IP, X.25, and Frame Relay, are based on packet-switching technologies. In contrast, normal telephone service is based on a circuit-switching technology, in which a dedicated line is allocated for transmission between two parties. Circuit-switching is ideal when data must be transmitted quickly and must arrive in the same order in which it's sent. This is the case with most real-time data, such as live audio and video. Packet switching is more efficient and robust for data that can withstand some delays in transmission, such as e-mail messages and Web pages.

A new technology, ATM, attempts to combine the best of both worlds -- the guaranteed delivery of circuit-switched networks and the robustness and efficiency of packet-switching networks.

APPLET

A program designed to be executed from within another application. Unlike an application, applets cannot be executed directly from the operating system. With the growing popularity of OLE (object linking and embedding), applets are becoming more prevalent. A well-designed applet can be invoked from many different applications.

Web browsers, which are often equipped with Java virtual machines, can interpret applets from Web servers. Because applets are small in files size, cross-platform compatible, and highly secure (can't be used to access users' hard drives), they are ideal for small Internet applications accessible from a browser.


CIRCUIT SWITCHING

Relays or other components that are use to save the circuit in any type of categorey or the comnents which connect teh circuit opr dis connect the circut at our desire values is known as a switching circuits.

 

[shoivn]

Another good book:
Data and Computer Communications by William Stallings