The Whole Internet

Topics: Internet, Digital Subscriber Line, Asynchronous Transfer Mode Pages: 6 (2068 words) Published: October 14, 2012
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| Infrastructure Assignment - 4|

1. Compare and contrast at least five technologies that are readily available for in-home internet access. You should consider practical as well as technical differences in your comparison. Do not include Frame Relay or ATM as these are primarily larger scale business solutions. 802.11N| Higher-speed standards up to 300+ Mbps| 802.11n uses (MIMO) technology and a wider radio frequency channel.| It provides a mechanism called frame aggregation to decrease time between transmissions| Channels operating at 40 MHz are another feature incorporated into 802.11n| The transmitter and receiver use pre-coding & post-coding techniques to achieve the capacity of a MIMO link| Video Conferencing| A video conference is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously| ITU H.320 is known as the standard for video conferencing over integrated services digital networks| H.264 SVC is compression standard that enables video conferencing systems to achieve highly error resilient| The components within a Conferencing System layers: User Interface, Conference Control, Control or Signal Plane and Media Plane| The RTP and UDP normally carry information such the payload type which is the type of codec, frame rate, video size and many others| Browser| A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web.| Web browser is a client program that uses HTTP to make requests of Web servers throughout the Internet on behalf of the browser user| Web browsers use many other protocols like HTTPS, asp, java script, VB script to display and run script in web page| Browsers include additional components to support e-mail, Usenet news, and Internet Relay Chat (IRC)| There are many web browsers are available like Internet explorer, chrome, Firefox and safari| VoIP| VoIP (Voice over Internet Protocol) is simply the transmission of voice traffic over IP-based networks| VoIP has become popular largely because of the cost advantages to consumers over traditional telephone networks| In the VoIP world, codec’s are used to encode voice for transmission across IP networks| There are many codec’s are used in VoIP like ITU G.711 ITU G.722 ITU G.723 ITU G.726 ITU G.727 G.728 | There are many Internet telephony applications available. Like CoolTalk and NetMeeting & Google voice| Bit Torrent| BitTorrent is a content distribution protocol that enables efficient software distribution and peer-to-peer sharing of very large files| To share a file or group of files, a peer first creates a small file called a "torrent" This file contains metadata about the files to be shared and about the tracker, the computer that coordinates the file distribution| BitTorrent makes many small data requests over different TCP connections to different machines, while classic downloading is typically made via a single TCP connection to a single machine.| distributed nature of BitTorrent leads to a flood like spreading of a file throughout peers. As more peers join the swarm, the likelihood of a successful download increases| The peer creates a hash for each piece, using the SHA-1 hash function, and records it in the torrent file|

2. Explain the similarities and differences between Frame Relay and Asynchronous Transfer Mode. ATM and frame relay are two of the most common used methods for telecommunications between networks today. ATM, which stands for Asynchronous Transfer Mode, is a technology that arose from international standards relating to the transmission of data, voice, and video simultaneously over a network at speeds far faster than has been possible without the standards. ATM is also known for transporting communications at hundreds of megabits per...
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