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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 symptoms would probably be present if your 100Base-TX Ethernet network length is 200 meters?
-100
What is the difference between an XT and an AT computer system?
The differences are relatively minor. The XT included a hard drive, while the original PC needed a card and drive provided for it. The XT also lacked a jack to connect a cassette drive as storage. No version of the IBM PC had a processor faster than 4.77 MHz, but the XT had a version with a 6 MHz processor.
Difference between bit and byte oriented protocol?
In bit oriented Protocol, a flag is used to frame the bits sent. Simply put, you have a fllag (01111110) and the required bits are sent after the flag and you end the transmission again with a flag. Using this method you can send any number of bits of any length. Another important fact is the zero insertion method used. Say for example, you want to send the bit string 01111110. You cannot do this because it will be interpreted as a flag. However, by adding a zero after 5 consecutive 1's as a standard, this bit stream can be send. The transmitter sends the string as 011111010 and the receiver removes the zero after 5 consecutive 1's and stores the data as 01111110
In byte oriented protocol(character oriented protocol) the receiver considers 8 bits at a time and figuers out the relevant character. This system is used when communicating with printers and keyboards which use ASCII characters exclusively. (All the ASCII characters can be covered by 8 bits (256 characters). The main disadvantade of COP is that you cannot send 9 or 10 bits, arbitrary bits. Furthermore, in COP there are special characters - channel control characters, eg- SYN character which is used to synchronize the receiver and the transmitter. These characters cannot be transferred as data. They will be misread as control characters.
Why physical address is needed when IP address is present?
Without a physical address, you will not be able to access a network outside the LAN that you are on. This is simply due to the fact that the computer on another LAN would not know where to forward the requested information. Your IP address work on the Internet Protocol within routers and switches, and associates it finding with your local machine (computer) by way of its mac address (physical address). Notice, your computer does not have an IP address, when you log on to the Internet a DHCP server issue you a leased IP address which is associated with your MAC for the duration of time that your computer is log on to the NET. There are quite a few reasons why your computer would not be network operable without a MAC address, this is just one of them.
Where do you go in your computer to find your ftp?
FTP is used by servers, not personal computers. You can have a FTP on your personal computer, but you will need software and programs to do this. If you don't have the right programs then you don't have a FTP. There are some links on how to set up a FTP below. If your new to this you might want to use Windows XP to set up a server, and if your serious then use Windows Server 2003 or 2008. http://www.pcstats.com/articleview.cfm?articleID=1491 | http://lifehacker.com/software/home-server/how-to-set-up-a-home-ftp-server-130806.php
Advantages of data communication?
1.Circutary becomes simpler than AC.
2.Highly resistive to noise as we are dealing with binary digits.
3.Highly secure.
4.Can travel long distances and can store data for long time.
5.AS we have regenerative repeaters & reconstruction filters in the receiver section we can extract original signal transmitted
6. Error correcting and detecting is easy.
7. A comman format is used for different kind of message signal such as speech signal and video signal.
8. Flexibility in configuring digital communication. digital hardware implimentation is flexible and permit the use of LSI. microprocessors anmd digital switches.
Where can on purchase a RG6 coaxial cable?
One can purchase RG6 coaxial cable from a variety of different places. You can try your local electronics store, a TV stockist, or a large department store. You can also try Amazon.
What causes viruses on your computer?
Your computer will get infected by a virus by opening the virus-file. This file will usually be: or: attached to an email-message or: under a button on a internet-site (sometimes even by opening a site or perform some other action on the site). or: on a CD or other kind of disc. or: a file, sent to you, through a messenger-service.
1. An infected memory stick, diskette or other computer connected by a network can infect the computer system
2. Downloading files that are already infected can infect your computer.
What is meant by Dialog Control at Session layer?
Dialog Control is the main function of Session layer.
Session layer manages dialogs between two computers and it is responsible for communication or conversation.
There are three forms of dialog.
1. Simplex dialogs : one way transfers, for example.. computer to printer ( computer will send data to printer and printer will receive the data ).
2. Half-Duplex Dialogs - Two-way transfers, Each device must take their turn. Both cannot transfer at the same time. for example..walkies-talkie
3. Full-Duplex Dialogs - Two-way simultaneous data transfers. Each device has it's own channel. for example.. telephone.
You cannot. For a game to work properly, it must have a path from the server to the client program running on your computer. You can configure your computer to be wide open without changing the router settings, but if the router is blocking the port(s) you need, there's no way to get around it without adjusting the router settings.
Where on windows live messenger how do you make a coloured display name?
A button called "Format Codes" is beside the spot where you enter the name. If it's not there, you might need to get Messenger Plus! Live.
[c=4]Your Name[/c] will make it red. Different numbers after the = sign will make other colors. If it still does not work after entering that, then you need Messenger Plus! Live.
What are the disadvantages of ring topology?
Here are some disadvantages of tree topology -
- Overall length of each segment is limited by the type of cabling used.
- If the backbone line breaks, the entire segment goes down.
- More difficult to configure and wire than other topologies.
How do you see what other people are doing on your WiFi network?
Depending on what firmware is on your router you can check out the log files. Though the most you are going to get from this a MAC address, which really isn't much good for finding the person. The only real upside is you can block their MAC and most attackers seem to have a hard time to figure out why they cant get back on all of a sudden. Usually I just put a password on the actual router but leave wep/wpa key off. Set-up Vlan. Set-up QoS. Give myself the best stream and set everybody else to a setting that makes dial-up look fast. Most people give up when they see the terrible speeds they are getting and wont bother the network again. If you want to be nasty, let them connect and sniff their traffic. Next time they go online they will see their emails are all deleted except one which pretty much warns about the dangers off connecting to open networks.
What type of network is used to connect two or more networks?
This is called a Wide Area Network or the Internet.
A computer or web host that is dedicated to providing the processing power to maintain and handle chatting. They are able to handle all the users who are on the chat site or in the chat rooms at the same time.
Write down the steps involved in creating an email address or account?
Choose your provider for create new ID.Then open this site and click on sign up or register or new account.Than give your name,password,question-answer for security,secondary email ID,than after click on sign up or register or create my new account.
What does ftp stand for what does it mean?
File Transfer Protocol
File Transfer Protocol or FTP is the procedures and rules governing how computer files are uploaded (or downloaded) to the World Wide Web (Internet). When files go from a computer to a personal website, programs use FTP to transfer the files.
