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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

What is network tropologies?

A network topology is a description of the way computers are connected to each other and to other devices on a network. It can refer to the physical connections (the way the wires interconnect or the routing of wireless signals) or it can refer to the logical connections (the way computers can see each other or not see each other even though they have a physical connection.

The topology can refer to a home network with a handful of computers and printers or it can extend to vast sections of the Internet.

Some examples of topologies are ring, bus, tree, mesh and each describes the way the links are made. Network topology is a huge topic and the subject of more books than can be counted. A link is below that offers some simple examples of topolgy and might be a springboard for more study.

What is cost of class a and class b public address?

For an institution or even an individual, the cost would be whatever the ISP charges to connect using that address.

How can you get into locked wireless internet?

Secured wireless networks are networks with, usually, a WAP key. A WAP key is located on the actual modem and/or wireless device, etc. Some setups may allow the creator of the network to establish a password in replacement of a standard WAP key.

What do you understand by internet and intranet explain with example?

Network of networks is called internet. For internet we will require both hardware and software component. We should have four things for hardware.

1- Computer

2-Modem

3- Telephone

4- NIC (Network Interface Card)

And in software

1- Operating System

2- ISP ( Internet Service Provider)

3-Browser

Internet is when your computer can access the World Wide Web (www.) through a modem or gateway. it can also be connected to a network at your home or office, but you can still access the internet.

Intranet is a type of closed loop network that only certain computers are part of. There will not be access to the www. because there is no gateway or modem attached to the network or computer. Internet is also a way to connect office computers together to share information. An example of the use of a internet will be the Department of Defence or some police agencies.

What is the difference between broad band and base band?

Broad band is a given range of frequencies, starting at a lower frequency through to an upper frequency, Base band is usually a specific frequency on which various modulation methods can be employed. But it too, can have a frequency range, or `band width' that considered part of the base band but yet called a single frequency based on the frequency's `center frequency'. A base band frequency for instance that's used in analog TV transmissions can range from 6 to 8 megahertz wide, on which the video, sound, color and other information is imposed. Broadband, usually used in computing terms, usually implies something like a DSL modem that can work from a few bits per second up to thousands of bits per second. It can either be wired or wireless, much the same as with a base band system.

Sanyo Pro Xtrax Multiverse Projector can you buy a package where you can view the television thriugh the projector?

You just plug you tv in to the poroject with A/V cables (red, yellow, white) also called composite, Component HD (red, green, blue) or Svideo. You can get cable coax to svideo conectors if needed. Once connected turn on tv source be it cable box direct cable or antena (?) then turn on your projector and go through the input selection until your tv shows up on the Screen. Of course if you know what input method you have your TV pluged into just select that. If it doesn't show up check cables and repeat.

Essential properties of network operating system?

a ntwk op. system must have d folliwing properties

1.a protocol eg.TCO/IP

2.ethernet usable

3.properties of a normal client PC or server

How can an operating systems help administrators control a network and manage security?

To Abe able to manage and control a network properly, your computer would have to have server preferences.

Server Operating Systems such as Microsoft Server 2008 can be used for security management over a network, but requires a fair bit of insight to operate and are mostly used by IT professionals only. Group Policy Controls, an Advanced firewall with by the minute updates, Network Access Protection, Network Policy and access System.

Windows 7 has a few network security capibilities built in...

What is a desktop system?

A desktop computer is a personal computer (PC) in a form intended for regular use at a single location

What makes Gold Atoms more conductive than other Atoms?

Gold is more conductive than other atoms (except silver and copper) because of its high concentration of free electrons. Silver and copper are more conductive than gold, but gold has the advantage of being corrosion resistant.

How many signal levels are required when the bandwidth is 2MHz and signal to noise ratio is 8 dB?

Use Nyquist and Shannon Heartly theorem to solve this

Nyquist theorem says that

Channel Capacity C = 2 * Bandwidth * log2 (Number of Signal levels)

Shannon Heartly theorem says that

Channel Capacity C = Bandwidth * log2( 1 + SNR)

Important points to consider while solving

Bandwidth is expressed in Hz

SNR is expressed in dB it must be converted using dB value = 10 log10(SNR)

(10 dB = 10, 20 dB = 100, 30 dB = 1000 etc..)

How to connect wireless Computer to sanyo pro xtrax multiverse projector?

You would need a VGA cable, If your Computer doesn't have a VGA port you would need some kind of extension which you could probably buy on amazon.

Why is client or server network requires a network operating system?

The purpose of a computer network is to allow users to share resources located on other computers, to share hardware devices such as printers and fax machines, to allow applications running on different computers to exchange data and to allow users to communicate electronically. A network operating system (NOS) is a special kind of operating system designed to provide networking functionality. A network operating system should support client-server networking, and include all of the programs needed to manage network resources and create a secure network environment. The most widely used network operating systems today include Microsoft Windows Server, Novell Netware, UNIX and Linux. Most network operating systems.

What is mean by Mac spoofing?

Every piece of equipment (computers, printers etc.) has a MAC (Media Access Control) address which identifies it when it is connected to a network. To spoof the MAC address is to supply the network with a different address than the one allocated for your computer so you are pretending to be another computer.

Will megaman NT warrior ever be on tv again?

I'm not prescient, so I COULD be wrong . . . but it's not likely. The website for the show hasn't been updated since Katrina . . . so I think it's safe to say that the show will continue to rot in canceled-anime-toon-hell for the rest of eternity. Sorry.