cable modem???

Question

Hi there... Is there any computer expert up there...i need to research on Cable Modem... but i don't know wad is that.. i need to focus on:

- Identify the benefits and the limitations of the technology

- Comparison (compared to other similar technology)

i find thru internet and i don't know what they talking about..

can help me.... as long as possible... i need to present it for 10min for this topic "Cable Modem"... plz...... thank

Answer 1

Try to go on Wikipedia and search for it. They have a really good site on it. If you have any direct questions about it email at [e-mail]



http://www.carbonfrost.com/

Carbonfrost Systems: Free Email Support To All

Answer 2

A cable modem is a type of modem that provides access to a data signal sent over the cable television infrastructure. Cable modems are primarily used to deliver broadband Internet access, taking advantage of unused bandwidth on a cable television network.

Bandwidth of business cable modem service typically range from 2 Megabits per second (Mbit/s) up to 50 Mbit/s or more.

There are two potential disadvantages to cable internet:

Like all residential broadband network technologies (e.g. DSL, FTTX, Satellite internet, WiMAX), a fixed amount of bandwidth is shared by a population of users (in the case of cable internet, users in a neighborhood share the available bandwidth provided by a single coaxial cable line). Therefore, connection speed can vary depending on how many people are using the service at the same time. This arrangement allows the network operator to take advantage of statistical multiplexing in order to provide an adequate level of service at an acceptable price. However, the operator has to monitor usage patterns, and scale the network appropriately, to ensure that customers receive adequate service even during peak usage times.
Many cable Internet providers are reluctant to offer cable modem access without tying it to a cable television subscription. They do this by charging higher rates, say $40/month for cable modem only access, than if one bundles it with a cable TV plan where it might be $30/month for cable modem service plus $20/month for cable TV service. This has ramifications similar to those of the lack of naked DSL. However, some cable internet access providers who resell access from cable companies, such as Earthlink, are generally not subject to these higher rates.

DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop, although in recent years, many have adopted digital subscriber line as a more marketing-friendly term for the most popular version of consumer-ready DSL, ADSL.

Typically, the download speed of consumer DSL services ranges from 256 kilobits per second (kbit/s) to 24,000 kbit/s, depending on DSL technology, line conditions and service level implemented. Typically, upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for Symmetric Digital Subscriber Line (SDSL).

Essentially, DSL connections work by splitting up a single phone line into two 'bands'. The ISP data runs without interference from the phone data using only the high frequencies. The user typically installs a DSL filter on each of the phones which filters those out from the phone, so that the phone only uses or hears the lower frequencies. This creates two completely independent 'bands', allowing the high frequencies to be used by the DSL simultaneously with the phone line without interfering.

Hope this helps.

Answer 3

I am no expert but I know enough. I think it would be best for you to do the research yourself to have a good presentation. here are a couple of links that should help you out.

http://www.computerhope.com/jargon/network.htm
http://www.pcw.co.uk

Answer 4

WWW.GOOGLE.COM
Research it yourself.