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Computer Networking

Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.

18,810 Questions

Why can't i watch videos on my computer?

If you hardware and basic software are working properly you need so called codecs.

Where can you watch all seasons and episodes for Megaman NT warrior please give I Link?

Truthfully, the best place that you might have thought of already is Youtube. There may be some other fanatics posting episodes on their own websites, but, you know, highly unlikely! Although, since Megaman was the product of the same company that did other JAPANESE games, the majority of those episodes will be in English dubs.

How do you connect the link cable?

Call your local cable company and say you would like to subscribe to there service. They will hook you up outside. It is either up to you to run cabling inside for hookup or you can have the cable provider do it for an extra fee. Run at least RG6 or RG6 quad coaxial cable inside with compression fittings only. Do not use crimp or screw on types as they tend to degrade and cause signal loss. If you are not that handy then have the cable company do it for you. Call your local cable company and say you would like to subscribe to there service. They will hook you up outside. It is either up to you to run cabling inside for hookup or you can have the cable provider do it for an extra fee. Run at least RG6 or RG6 quad coaxial cable inside with compression fittings only. Do not use crimp or screw on types as they tend to degrade and cause signal loss. If you are not that handy then have the cable company do it for you.

Is university free in Sweden?

To study at universities in Sweden is free, but you still have to pay for all the books.

Can you connect your laptop to your ps3 and see What is on your laptop on your tv?

I haven't tried it but im looking into it but using a video capture device like Dazzle DVD recorder but I don't know what the quality is like on that.

Gamebridge provides reasonable quality for PlayStation 2 however the lack of HD severely impacts PlayStation 3, it does deserve credit for showing no lag time that. The connections are component and s-video. (price with TV tuner $15)

What is 10 100 1000base t in networking?

10baseT is the designation for ethernet LAN running on twisted pair cable at 10 megabits per second using cables and hardware compatible with 10baseT. 100baseT, also called Fast Ethernet, uses twisted pair cable where data transfer occurs at 100 megabits per second with cables and hardware compatible with 100baseT. 1000baseT (gigabit ethernet) runs at 1000 megabit per second or 1 gigabit with cables and hardware capable of maintaining that speed. The higher speed cables and hardware are supposed to be compatible with the earlier slower speed.

The T in 10..baseT indicates that it uses twisted pair cabling (called category 5, 5e, 6, 6a depending on the speed it can handle) with various rules about the cables regarding insulation, shielding, connection rules and a maximum cable distance of about 100 meters.

Earlier versions of ethernet used different cableing. 10base5 used a special thick coaxial cable, ran at 10 megabits per second with a maximum cable length of about 5 hundred meters. 10base2 used thinner cheaper coaxial cabling and connectors, also ran at 10 megabits per second but with a maximum cable length of about 200 meters. Both of these are considered obsolete having been replaced by the twisted pair cable.

What are the disadvantages of using coaxial cable?

scattering, costs high than wireless communication, difficult to maintain,splicing should be perfectly taken care ,otherwise the loses increases in the optic fibres

Given a channel with intended capacity of 100Mbps the bandwidth of the channel is 20 MHz What signal to noise ratio is required to achieve this capacity?

Using the Shanon Capacity formula,

C = B log2 (1+ SNR)

Where B = 20 X 106 Hz

In order to calculate C (channel capacity) one must be mindful that 1Kbps = 1024 bps, NOT 1000 bps. Having this in mind,

C = 100 X 1.024 * 106 bps = 1.024 * 108

Substituting C, B, and solving for SNR:

1.024 * 108 = 20* 106 * log2 (1+SNR)

1.024 * 102 = 20 * log2 (1+SNR)

5.12 = log2 (1+SNR)

25.12 = 1 + SNR

2 5.12 - 1= SNR

SNR = 33.8

if in decibels = 10 log (33.8) = 15.29 dB

What is the fullform of PSTN?

Public Switched Telephone Network

Public Switched Telephone Network

Public Switched Telephone Network

Public Switched Telephone Network

What can you do if someone is using your home address?

You should file a police report immediately. Unless you have given someone permission to use your address, they are committing an offense and you may find yourself in legal trouble. If they are using your address they may be getting the mail out of your mail box.

What is a synonym for mask?

An archaic word for a face mask is a "facials"

If want to buy face mask, Green + Bare offers Australian best-made natural & cruelty-free skincare products like face masks for real life & real skin. 100% natural & vegan friendly

What is the difference between communication device and communication media?

In context of Computers:

Communication Devices enable conversion of voice signals into digital/analog & vice versa whereas Communication Media refers to the medium used for storage & transmission of Communication in form of DATA.

What is client server Architecture?

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Client server architecture refers to a network architecture whereby every computer on the network is either a server or a client.

Can you connect a 2-wire DSL wireless modem router to a cable modem?

This question can be understood with more than one meaning.

One meaning is that of a user that desires to connect an access point to retransmit internet from their cable modem to extend the bandwidth provided by their Cable ISP wireless to one or more users. For this, one must first check the acceptable use policy of the company which is providing the cable router. The hookup is quite straightforward. Setup the cable modem to deliver a static IP to the wireless router. Let the wireless router reassign IPs to the end users. If servers are to be parked behind the wireless router, then more engineering is required, which will not be covered here in this response. (Please ask another question regarding configuring servers behind cable modems.)

There are wireless router / gateway devices that you can hool up to a cable modem to provide auto failoever and auto failback during cable internet outages. One such device is the Nexus Hawk www.nexushawk.com. This wireless router device is inserted between the cable modem and the user network. The wireless router then provides internet access during intermitent outages. There are a few such products advertising this feature, but to date I have only seen the Nexus Hawk in use. I invite others to write of other products they have seen working in the field. This question can be understood with more than one meaning.

One meaning is that of a user that desires to connect an access point to retransmit internet from their cable modem to extend the bandwidth provided by their Cable ISP wireless to one or more users. For this, one must first check the acceptable use policy of the company which is providing the cable router. The hookup is quite straightforward. Setup the cable modem to deliver a static IP to the wireless router. Let the wireless router reassign IPs to the end users. If servers are to be parked behind the wireless router, then more engineering is required, which will not be covered here in this response. (Please ask another question regarding configuring servers behind cable modems.)

There are wireless router / gateway devices that you can hool up to a cable modem to provide auto failoever and auto failback during cable internet outages. One such device is the Nexus Hawk www.nexushawk.com. This wireless router device is inserted between the cable modem and the user network. The wireless router then provides internet access during intermitent outages. There are a few such products advertising this feature, but to date I have only seen the Nexus Hawk in use. I invite others to write of other products they have seen working in the field.

What are the Elements of optical fiber communication link?

If light meets the inner surface of the cladding (the core - cladding interface) at greater than or equal to Qc then TIR occurs. So all the energy in the ray of light is reflected back into the core and none escapes into the cladding. The ray then crosses to the other side of the core and, because the fiber is more or less straight , the ray will meet the cladding on the other side at an angle which again causes TIR. The ray is then reflected back across the core again and the same thing happens. In this way the light zig zags its way along the fiber. This means that the light will be transmitted to the end of the fiber.

In reality the light which enters the fiber is a focused beam, consisting of many millions of "rays" behaving in a similar way. They all zig zag along the core of the fiber, crossing over each other, and filling up the core with light. A pulse of light traveling along the core of the fiber is really a bundle of these rays.

What arp table entries are created when a client makes an arp request that cannot be satisfied by data already in the arp?

Dynamic ARP table entries are created whne a client makes an ARP request that cannot be satisfied by data already in the ARP table.

What term refers to the concept of believing one's culture is better than others?

The term that refers to the concept of believing one's culture is better than others is ethnocentrism. It's the tendency to view alien groups or cultures from the perspective of one's own, and is often accompanied by feelings of dislike for other groups. It is generally developed negative connotations.

What are the different generations of computer networks?

* First Generation (1940-1956) - VACUUM TUBES * Second Generation (1956-1963) - TRANSISTORS * Third Generation (1964-1971) - INTEGRATED CIRCUITS * Fourth Generation (1971-Present) - MICROPROCESSORS

What do ports 135 and 137 information tell an attacker?

Ports 135 and ports 137 tell an attacker that the user has a Windows OS system. These ports are used by hackers.

How did you operate the first computer?

By first, do you mean... First? The Medical Institute Learning Facility, Russia (MILF) was founded in 1632 by a wise man, known as Wilt "The Stilt, Illadelph, The Illy One" Chamberlan, named by the man himself, Bobbito Garcia AKA DJ Cucumber Slice, MC corn on the cob.

Back in 1632, the very first computer was designed by Bill Gates and Harry Potter.
With their combined technological wisdom, they formed the greatest invention known to man. The Computer. Commonly known as The Computer.

This device is know to have cured many unknown diseases, such as; Unknown Disease.25, Unknown Disease.1, Unknown Disease.953 and The Common Sadistic Arabian Flu.

The main function of this device was the "On" button.

How much salt floats an egg?

its H2O

AnswerSalt has nothing to do with it.

A fresh egg will sink in water. Stale eggs will have propagated gases within them, causing them to float in water.

This is a classic test for egg freshness.

What is written above may be part true, but the salt has a lot to do with it because without it with the same egg withing the same 5 minutes with salt it floats and without it, it dose not.