Saturday, December 02, 2006

The PING(Packet Internet Gropher) Utility

The ping utility is used for testing connections. With the help of ping command we can test whether a connection is still active or not. The ping command is available on most operating systems that implement TCP/IP.

The ping command is used to query another system to ensure that a connection is still active. The ping program sends an ICMP message to the remote and waits for a reply. If the destination machine's IP software receives the ICMP request,it issues an echo reply immediately. The sending machine continues to send an echo request until the ping program is terminated. After termination ping displays a set of statistics as shown below.

We can also use PING to isolate network hardware problems and incompatible configurations. You can use the PING like below.

1. Ping the Loopback address to verify that TCP/IP is installed and configured correctly on the local computer.


2. Ping the IP Address of the local computer to verify that it was added to the network correctly.

If a computer is on a network and it's IP Address is then use ping command like this.


3. Ping the IP Address of the Gateway to verify that the default Gateway is functioning and that you can communicate with a local host on the local network.

If the default Gateway is then use the ping command like this.


4. Ping the IP Address of a remote host to verify that you can communicate through a router.
By default PING waits 1000 ms(1 second) for each response to be returned. If it does not receive the response then it will display Request Timed Out message like this.

Note: Articles on Windows NT,Windows 2000 Server,Windows 2003 Server will come soon on my blog under the same NETWORKING section.

How can you clean the LENS of CD,DVD Drives and Writers?

If there are dust particles on the Lens of CD or DVD drives and writers then they won't read Cd's or Dvd's. We can clean the Lens with one or two water drops like this.

First unscrew the Drive from the computer. Take it out from the computer. You will observe 4 screws on one side of the CD Drive. Unscrew those four screws. Then open the iron sheet cover from the drive. Then you will observe like this.

In the above figure you will observe that Door of the CD Drive is locked and front plastic cover is also locked. The screw driver is showing door locking point in the above figure. You can clearly observe it from the figure below.

With the help of screw driver move the locking point to the left. Then door lock will be released. Now you can release the front plastic cover by pressing two small plastic locks on left and right sides of the drive. Now remove the second iron sheet cover also. Then you will observe the CD LENS as shown below.

The CD Lens is in the circled mark(The Door of the CD drive covers the Lens). Now with your finger put one drop of water on the Lens then clean the lens with a clean paper until it dries. Now cleaning Lens is completed. Now arrange the CD drive as usual then Fit it to the computer as usual.

NOTE: After reading this article first observe the cleaning procedure when any experienced person is doing the Lens cleaning. You can easily understand how he is doing the Lens cleaning. After you got confidence then you can also do the same as explained above.

Which 3D card is cheap&best for old AGP 4X Mother Boards to run almost all latest games?

Old PC's have Mother Boards which support AGP 4X 3D cards only. We can use AGP 8X 3D cards also on these boards. But these Old AGP 4X Mother Boards won't support latest 3D cards. If your system has old AGP 4X card then you can not play latest games on this card. Here is the solution to play almost all latest games on your PC.

You can not upgrade your 3D card to latest 3D card as your mother board won't support latest 3D cards. But Your old AGP 4X Mother Board will support AGP 8X 3D cards. The cheap and best card for this type of mother boards is 256 MB DDR GEFORCE FX 5200. This is AGP 8X 3D card.

One more important thing. For almost all latest games to work on this card you have to install atleast 1GB RAM in your system. Also you have to install latest display drivers for all games to work. You can download latest nvidia display drivers from softwares section on the same blog. First check whether your system is working well with 1 GB RAM or not? If your system is O.K with 1 GB RAM then only purchase GEFORCE FX 5200 3D card. Games like FEAR will require atleast 1GB RAM.

Try to purchase the card from local dealer. If it is not available then you can purchase this card from WWW.EBAY.IN site at cheap price. Compare rates of local dealer and EBAY. I think EBAY rates may be cheap.