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 ...view middle of the document...
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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 second, which results in speedier service than Ethernet on local area networks. ATM has also ascended into being a standard for fixed-length cell switching. Cells that originate from various sources or from various destinations are asynchronously multiplexed between multiple packet switches. The Virtual Path Identifier (VPI) and Virtual Circuit Identifier (VCI) are the unique integer fields that identify each circuit on each link of the network.
Frame Relay implements no error or flow control. The simplified handling of frames leads to reduced latency, and measures taken to avoid frame build-up at intermediate switches help reduce jitter. Frame Relay offers data rates up to 4 Mb/s, with some providers offering even higher rates. Frame Relay VCs are uniquely identified by a DLCI, which ensures bidirectional communication from one DTE device to another. Most Frame Relay connections are PVCs rather than SVCs.
Frame Relay provides permanent, shared, medium-bandwidth connectivity that carries both voice and data traffic. Frame Relay is ideal for connecting enterprise LANs. The router on the LAN needs only a single interface, even when multiple VCs are used.
The difference, first, frame relay uses variable packet sizes. The packet size varies, depending on the amount of data that is being sent. ATM uses a fixed packet size, which is the 53 byte cell that was depicted earlier. Next, frame relay, while although is useful to connect...