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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 are the advantages of analog?

Advantage of Analog Communication: 1)Transmission bandwidth required is less. 2)No need of synchronization.

What is a syndrome?

A syndrome is a collection of recognizable features, behaviors, signs and symptoms (as reported by a patient) which frequently occur together and can be observed or detected collectively to identify a particular illness, genetic disorder or other medical condition.

In some cases a particular syndrome may have only one cause, such as Down Syndrome. Others have multiple possible causes such as Parkinsonian Syndrome (often shortened to Parkinson's), or in many cases the cause may be unknown.

Some syndromes may have limited treatment options or are groups of symptoms and behaviors that may not be treatable or are still under investigation by medical professionals.

The most important distinction to realize is that a syndrome is not a cause of disease or even a disease in and of itself but rather it is the collection of side effects caused by something else.

For example AIDS (Auto Immune Deficiency Syndrome) is the collection of side effects which includes a weak immune system; however, HIV (Human Immunodeficiency Virus) is the actual disease which is contagious. People do not catch AIDS; they catch HIV which than causes the syndrome (or collection of symptoms) known as AIDS. It is a commonly made mistake to use the terms incorrectly. But from a technical standpoint HIV is the virus, and AIDS (which is a syndrome) is the list of side effects.

How do you report hackers?

You don't. Hackers are people who like to experiment with computers and systems.

It would be like reporting an electrician, because he wanted to see if he could make a grilled cheese with a soldering iron.

Crackers on the other hand are people who like to crack into systems for gain.

You can report "Crackers" to the FBI if you have solid evidence.

Don't contact the FBI if your system is acting weird, and you can't explain it.

You need to know what you are doing before you report anyone.

What is Shannon capacity In What conditions the capacities of a channel become zero Calculate the capacity of a channel when its SN 33dB?

) Shannon capacity tells us theoretical highest data rate or the capacity of a channel irrespective of the physical materials of the channel or media. It is calculated for a channel with the following formula C = B log2 (1 + S/N) in bps. Where B=bandwidth of the channel and S/N=signal to noise ratio.

2) The capacity of the channel becomes zero when the signal to noise ratio is zero or for extremely noisy channel S/N=0…..

3) Extremely noisy channel

S/N = 33dB or 2981 watts

And bandwidth of the signal B=2000

So, C = B log2 (1 + S/N) = 2000 log2 (1+2981)

C = 2000 log2 (2982) = 2000*11.52 = 23056.47 bps

to be more specific capacity becomes zero when the signal power is zero. since

S/N=S/(N0*B) S- signal power, N0 - noise PSD, B- Bandwidth for txn

S/N=0 If and only if S=0; because if N0 AND B are zero S/N=infinity

What is an end device in networking?

The flashing rear-end device, or "FRED," (also called an end-of-train device, ETD or EOT) is an electronic device mounted on the end of North American

Defference bw a default subnet mask and a custom subnet mask?

The default subnet mask has a standard size. The custom subnet mask allows you to make subnets that are smaller or larger than the default.

What are benefits of using directory enabled applications in a network?

they reduced the potential for data redundancy, they provide increased functionality without requiring additional client resources and they help make the physical separation of resources transparent to users

Can i connecte rj45 to a mdi-x port?

Yes, you can connect an RJ45 connector to an MDI-X port. MDI-X (Medium Dependent Interface Crossover) ports are designed to automatically configure themselves to work with either MDI (straight-through) or MDI-X (crossover) devices, allowing for a direct connection without the need for a crossover cable. Therefore, using a standard Ethernet cable with an RJ45 connector will work seamlessly with an MDI-X port.

What is function of ip config?

Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings. Used without parameters, ipconfig displays the IP address, subnet mask, and default gateway for all adapters.

Read more from Microsoft:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ipconfig.mspx?mfr=true

Or from Wikipedia:
http://en.wikipedia.org/wiki/Ipconfig

How do you check whether the network is connected?

See if you can go to a site in the Web Browser or look at the lights

under the disk slot and see if the green one is blinking

How does Powerline Ethernet work, how can data transfer over electricity cable?

If you are facing an electrical data cabling problem in Sydney, then look at the answer below.

Ethernet work is a local area network protocol that provides internet connection wirelessly to all the nearby devices and transfers the data of 10 MB per second. The ethernet cable holds various copper wires that transmit the data and information between two devices by using the internet. These cables connect multiple devices and connect devices to both Local area Network (LAN) and Wide area networks(WAN)

External data can be carried over the wiring of the main power. The types of signals generated and selected at each end can be conveyed from a single pair of wires at the same time.

There are multiple wires, and at the end of each one of it, there is an adapter connected to a router, while the other wire is connected to a computer, printer and other wi-fi enabled devices. The short connections can also be established via ethernet cable to televisions.

The data signals are then processed forward and converted into low radio frequencies that very well propagate the paired power cables of domestic wiring. The signals that are generated because of this are paired into a wire that optimises the transformers, and the power line frequency gets blocked. This also disconnects high voltage AC on the cables.

This might lead to problems which can result in data loss and low-speed ethernet. They might make a lot of noise or interference on the power line.

Such devices work better when they are induced with wifi. They are most convenient for fixing

apparatus. Thus, this can be a good economical alternative to the hard-wiring ethernet cable.

The use of cable is quite common. Satellite dishes intake the power just as the TV does.

Ethernet is considered the fastest medium for communication and transfer of data. Though it comes with a lot of overheads, still it can be avoided by using protocol design just for sending audio and video signals.

Thus, this is how the data is transferred through electric cable in internet devices and the powerline ethernet work. If you are impressed with the protocol and wish to use the same process to put up home data cabling in Sydney’s home then visit Electrosecurity to add an easily accessible internet.

Describe workgroup sharing and how it compares to homegroup shairing?

Workgroup sharing is a decentralized network model where each computer is standalone, allowing users to share resources like files and printers without a central server, typically used in small office environments. In contrast, Homegroup sharing, which was available in earlier versions of Windows, facilitated easier sharing of files and printers among home networks by allowing users to create a centralized group with predefined permissions. While Homegroup was user-friendly and streamlined for home use, workgroups offer more flexibility and independence, making them better suited for diverse organizational settings. However, Homegroup has been discontinued in recent Windows versions, leading users to rely more on alternatives like workgroups or cloud-based solutions for sharing.

What is the difference between privacy and confidentiality?

Privacy and confidentiality mean different things. Privacy refers to an individual's right, or a group's right, to safeguard their information and involves protecting information. Confidentiality refers to an agreement between people where someone agrees to keep information from being released.

Administrators at a multicampus college need access to their schedules wherever the administrators go. Which computing device would be the most appropriate?

http://wiki.answers.com/Q/Administrators_at_a_multicampus_college_need_access_to_their_schedules_wherever_the_administrators_go._Which_computing_device_would_be_the_most_appropriate"

Find you the wireless modes?

like what do you mean like what are the wireless modes???

they are wireless g wireless b wirless n or m i forget and I'm not sure anymore