ENVS 1000 Lecture Notes - Lecture 11: Web Browser, Web Server, Bit Rate

8 views2 pages
ENVS 1000 Lecture 11 Notes Bandwidth
Introduction
Our primary concerns for an end-to-end connection are the interface characteristics of
the end points and the rate of speed with which data can be moved successfully through
the channel, usually measured in bits per second and known as the bit rate or
bandwidth of the overall channel.
Successfully i this case eas that ay oise or errors icurred durig the passage
through the channel can be removed and that the message can be accurately recovered
at the receiving end.
For example, if the channel connects a Web browser with a Web server, we are most
interested in how quickly and accurately we can download the Web pages and data of
interest.
The same definition of bit rate or bandwidth also applies to individual links.
Note, however, that the characteristics of the end-to-end communication channel are
determined by the characteristics of individual links.
For example, the modem in the first link of the channel described above limits the
overall speed of the channel, regardless of the speed in the remaining links.
Each link channel may be individually characterized by the type of medium it uses
By the signaling method and data formats used to carry its messages
By the directionality of signals supported by the channel
By its interfaces with the end nodes and with other links
By its bandwidth, by restrictions on the length of the channel
By the time delay between the times the channel receives data from its incoming node
and the time it releases the data to its outgoing node
By the number of connections sharing the channel
By the noise characteristics of the channel
By the way in which packets are steered through the channel from link to link and by the
electrical or optical properties of the channel.
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+
$40 USD/m
Billed monthly
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers

Related Documents

Related Questions