Download Computer Networks: Performance and Quality of Service by Ivan Marsic PDF

By Ivan Marsic

Show description

Read Online or Download Computer Networks: Performance and Quality of Service PDF

Similar data in the enterprise books

Multimedia Broadcasting and Multicasting in Mobile Networks

Introducing cellular multimedia – the applied sciences, electronic rights administration and every thing else you want to comprehend for supplying expense effective multimedia to cellular terminals potency and value effectiveness inside multimedia supply is quick changing into a scorching subject in instant communications, with cellular operators competing to supply reasonably cheap, trustworthy providers.

Absolute Beginner's Guide to Wi-Fi

Absolute Beginner's consultant to wireless is a publication for newcomers who are looking to sign up for the wireless revolution. utilizing easy-to-understand language, this booklet teaches you all you must learn about wireless, from picking the wireless approach that's good for you to including a wireless card and similar software program to discovering hotspots and entry issues.

XSLT cookbook: solutions and examples for XML and XSLT developers

Omit these funky robotic toys that have been the entire rage within the '80s, XSLT (Extensible Stylesheet differences) is the last word transformer. This robust language is specialist at remodeling XML files into PDF records, HTML files, JPEG files—virtually something your middle wishes. As necessary as XSLT is, although, most folk have a tough time studying its many peculiarities.

Asterisk Cookbook: Solutions to Everyday Telephony Problems

Asterisk has a wealth of positive factors that can assist you customise your PBX to fill very particular enterprise wishes. This brief cookbook deals recipes for tackling dialplan basics, making and controlling calls, and tracking channels on your PBX setting. each one recipe incorporates a easy code resolution you could positioned to paintings instantly, in addition to a close dialogue that gives perception into why and the way the recipe works.

Extra resources for Computer Networks: Performance and Quality of Service

Example text

2 Reliable Transmission via Redundancy To counter the line noise, a common technique is to add redundancy or context to the message. ” A human receiver would quickly figure out that the original message is “information,” because this is the closest meaningful word to the one that is received. Similarly, assume you are tossing a coin and want to transmit the sequence of outcomes (head/tail) to your friend. Instead of transmitting H or T, for every H you can transmit HHH and for every T you can transmit TTT.

2). 11) The velocity of electromagnetic waves in dry air equals v ≈ 3 × 108 m/s, and in copper or optical fiber it equals v ≈ 2 × 108 m/s. 33 and 5 nanoseconds per meter (ns/m). Given a wireless local area network (W-LAN) where all stations are located within a 100 m diameter, the (maximum) propagation delay is tp ≈ 333 ns. 192 ms. The relationship is illustrated in Figure 1-24(a). Recall from Figure 1-6 that on a 1 Mbps link, 1 bit is 1 μs wide, so the leading edge of the first bit will reach the receiver long before the sender is done with the transmission of this bit.

If errors are clustered, they are not effective. Consider the following example. ” By simply using a spelling checker, your friend may easily recover the original message. ” Obviously, it is impossible to guess the original message unless you already know what Rutherford said. This kind of clustered error is usually caused by a jamming source. It may not necessarily be a hostile adversary trying to prevent the communication, but it could be a passive narrow-band jamming source, such as microwave owen, which operates in the same frequency range as Wi-Fi wireless networking technology.

Download PDF sample

Rated 4.73 of 5 – based on 37 votes