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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
The Internet Protocol (IP) is a protocol used for communicating data across a packet-switched internetwork using the Internet Protocol Suite, also referred to as TCP/IP.
How do you link up two computers?
First you are going to need a modem for one of the computers. Now u can have internet for both or just one. Preferably both. Now what you do is you buy a wireless modem link.(Router) This is what they will be called....a Wireless router.
for example...... a (Wireless-G Broadband Router) u have to have a USB port of course. They will have an activator on the box. Activate it with the indicator of the USB port, and wire the modem and Router together at the I.P. address or Rest Pot. and you're set....
What is the cable color coding in Toyota hilux?
www.installdr.com can help a little but it leaves a few wires out like what to connect to the pink with blue stripe wire or the light green wire the brown wire and the gray with black stripedont know what these do.
What is a Global Network Bomb GNB?
A Global Network Bomb (or GNB) is a weapon of mass destruction for the global network. It has the power to knock off the World Wide Web for days, even weeks. The creator of this weapon is still not yet to be found. But it has been determined that the creator is now living in the United States of America, somewhere on the West Coast. The GNB is like a virus, it can be inplanted into another computer system. Once the user of that computer triggers the GNB or if the creator triggers it by will, it has a time delay time-response. Once the GNB has been triggered, it will spread throughout the user's system without the user knowing. If the system is online, the virus will spread throughout the global web in hours.
What is a nonroutable IP address?
These addresses are used for a LAN that has access to the internet through a local router which routes traffic to/from any PC connected to it via an address in either of those ranges from/to the internet. Addresses in those ranges are not routed by the internet routers. Most cheap off the shelf routers you can buy at Circuit City or your friendly local computer shop default to 192.168.0. or 192.168.1. as the first three parts of the 4 part IP addresses that they assign to any PCs connected to them. The router then gets a legitimate routable address from whatever ISP supplied router that it connects to for your internet connectivity.
Private Address SpaceThe Internet Assigned Numbers Authority (IANA) has reserved thefollowing three blocks of the IP address space for private networks:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
In other words 10.123.123.123 is a private non-routable
address for use in your LAN whereas 172.15.255.42 or 172.123.123.123 is not.
Is Cisco the only place that offers ccna course in Johannesburg and Pretoria?
use a cbt alternative... http://www.testout.com
How do you intoduce yourself if you are a youthworker to a client for the first time?
You act laid back and introduce yourself by first and last name. Make the client feel confortable. Depending on the client sometimes first name basis is comforting. Ask the person if they have any questions about you or anything else and answer with honesty. While doing this study the person (their eyes and body language) and get a 'fix on them.' You can tell a lot about people by doing this and it will give you some hints as to how to handle your client. Also a good policy is to listen without interruption. Then say what you think. Be honest, clear and concise.
Differentiate SVC'S and PVC's?
Difference between a PVC-Permanent Virtual Circuit and SVC-Switched Virtual Circuit is that an SVC must be reestablished each time data is to be sent. After that SVC disappears.
What are operating system tools?
Operating system tools are used to carry out certain tasks on your computer and keep your computer running smoothly. Tools include disk defragmenter, disk scan and disk cleanup.
Dynamic Host configuration Protocol different IP address every time it connect to the network (How to work DHCP server):-
It Provide IP address in any system in the follwing four step :-
1) Dynamic Host Configuration protocol Lease Request.
2) Dynamic Host Configuration Protocol Lease Offer.
3) Dynamic Host Configuration Protocol Lease Selection.
4) Dynamic Host Configuration Protocol Lease knowlegment.
1) Dynamic Host Configuration Protocol Lease Request :- At first client prepare a packet and broadcast from searching the Dynamic host configuraiton protocol server.
2) Dynamic Host Configuration Protocol Lese Offer : Now the Dynamic host configuration protocol server select the internet protocol address from the scope the give the offer to the clients ,if more than one dhcp server if present in network than the dhcp server in which offer come enough first basic provide ip address.
APIPA(Automatic Private ip Addressing ) : In case DHCP server not ip addressing provide so this situation by APIPA ip address provide from clients side It range the IP address 169.254.0.1 to 169.255.254 in this case the client which broadcast massanger at first time will take specific IP from APIPA after this it always contect every five minutes to any Dynamic host configuration protocol server.
3) Dyniamic Host Configuration Protocol : When client take the offer then the Dynamic host configuration protocol server send the selected IP address from the client.
4) Dynamic Host Configuration Protocol : After giving the IP address given the server send massage Dynamic host configuration protocol client.
Why modal dispersion limits the fiber bandwidth?
In a multimode fiber modal dispersion causes each mode to have a different velocity and reach to the end of the fiber at a different time. This will cause inter-symbol interference (ISI) which means that we need to send data at lower rates in order to prevent ISI. Lower rates means a reduction in bandwidth.
Proably some kind of bug or virus. You must be using windoze. Try unplugging you machine for a few minutes and then re-boot. If the problem persists contact micro soft. Make sure you have the latest updates and virus software installed. I like AVG Free, and it's ...free. If the problem persists after that, I would think about switching to something that works, like Linux. Ubuntu and Fedora are good OS and allow you to try them out before you buy. But the cost is...free and so is the software. I don't get paid for saying this either, because it too is...free. Good Luck.
What is the difference between encoding and modulation?
Encoding: The way in which the computer data is represented is known as encoding, there are several encoding techniques (Unipolar, Bipolar and Biphase).
Modulation: Modulation is the method of changing some of the characteristics of the message signal so that it can be transmitted to comparatively large distance without(least) getting affected by noise or unwanted signals.
Encoding: The way in which the computer data is represented is known as encoding, there are several encoding techniques (Unipolar, Bipolar and Biphase).
Modulation: Modulation is the method of changing some of the characteristics of the message signal so that it can be transmitted to comparatively large distance without(least) getting affected by noise or unwanted signals
Encoding : Digital or Analog data --> Digital signal
modulation : Digital or Analog data --> Analog signal
In most cases - true. Please review the following website on the About network for more specific information: http://compnetworking.about.com/od/basicnetworkingconcepts/a/network_types.htm
How do you cut and paste addresses in Thunderbird address books?
How do you cut and paste message bodies in Thunderbird email to forward on "cleaned up" of all previous information?
Why would you implement the DHCP?
By implementing DHCP, you would eliminate the need to set-up IP addresses manually.
DHCP (Dynamic Host Configuration Protocol) simplifies the management of IP address configuration by automating address configuration for network clients.
What geometric shape is used in cellular system design?
Hexagon. Although circles would represent a more accurate omnidirectional coverage, when we want to group circles together, they overlap one another. Hexagon doesn't and still has a somewhat 'circular' shape.
What is strategic performance management?
Strategic performance management is defined as: the process where steering of the organisation takes place through the systematic definition of mission, strategy and objectives of the organisation, making these measurable through critical success factors and key performance indicators, in order to take corrective actions to keep the organisation on track (Dr. Andre A. De. Waal)
Actually, aluminum mylar tape shielded cables are better than copper braid shielded cables for instrumentation cables.
How do you find the country wise list of IP address block?
Check out this web site:
http://www.ipdeny.com/ipblocks/
How do you stop the internet service in the client xp system?
You can stop Network Service in Services. In this case nobody can have network commutication on that PC.
Wireless networking allows you to connect several computers in your home without using hard wiring. This is especially useful in providing internet and email capability to each computer. You will need an internet service provider such as your cable or telephone company, a cable or DSL modem to receive and transmit to the internet, one wireless router and wireless cards for each computer. The wireless cards are not difficult to install, but it would be best to ask a knowledgeable friend or co-worker to help you. Visit your local Fry's Electronics, BestBuy, Staples, OfficeMax, CompUSA or similar retailer and ask for wireless network assistance. You should be able to create your own wireless network for about $100 depending upon how many computers you are linking.
Wireless wide area networks are wireless networks that typically cover large outdoor areas. These networks can be used to connect branch offices of business or as a public internet access system. They are usually deployed on the 2.4 Ghz band. A typical system is as per the one deployed by Gaiacom Wireless Networks http://www.gaia.ie/ contains base station gateways, access points and wireless bridging relays. Other configurations are mesh systems where each access point acts as a relay also. When combined with renewable energy systems such as photo-voltaic solar panels or wind systems they can be stand alone systems.
Can you connect four switches to one Router?
Yes. Just connect one switch strait into the router. Then hook the other three switches into the first switch. -DJ Craig
How can you find your MSN Messenger contacts IP address?
You can basically find any IP address. While a conversation window is open in ANY type of messenger click the start button on the taskbar, then hit "Run". Use the command "cmd" to enter ms-dos mode. After doing so, type in "netstat" in the ms-dos console and a full list containing the addresses of all connections at that time, including the IP of the Microsoft server that you chat session is being routed through.
To see the IP of the person you are chatting with, you must send them a file that is 1mb or larger before the netstat command will show their IP.
This Will work better with Skype and similar applications, which use a direct connection most of the time. MSN, being disgustingly old and stupid, relays chat and information, making it many times slower, and also much more difficult to trace. If you're using Ubuntu the complete routing of a packet can be traced under network tools. This will be much more useful if you are serious about tracing the IP of a contact.
Alternatively, Download CPORTS: http://www.nirsoft.net/utils/cports.HTML
This tells you what's connected to your computer, what program started the connection, the "process path" column .. and other various details.
With MSN, you can merely have a brief chat with someone and their IP will show up in Cports.
The MSN server will be something like:
207.46.111.61 by2msg2104808.gateway.edge.messenger
The number to the left of it is the IP.
Above or below this will be another address usually in the form of:
123.45.678.90 userblahblah.myisp.com
This will be the address of the person you're talking to, then copy / paste the IP into a locator program such as:
http://www.ip-address.com/ipaddresstolocation
It won't usually be where the user is located, but where the IP address originated from .. for obvious security reasons I'd imagine.
