Showing posts with label Computer and Technology. Show all posts
Showing posts with label Computer and Technology. Show all posts

Thursday, April 5, 2012

Lookup on the web through dns lookup



The dns lookup stands for the strategy or the way the web follows when a user asks for some web site by typing it on the address bar. The dns lookup refers towards the search of the domain name of the certain web site. For example when the user offers the web site name as Google, from its domain name (i.e. Google) the web searches the web and discover the IP address attached to it. In this way, the web is in a position to give the user his or her needed web site.

The step entails transfer of series of messages amongst the computer system and the web service provider and also amongst the web service provider and the root server. The initial step of the dns lookup technique begins when the user types the domain name for the web site on the URL bar. The computer system checks for the domain name via caches weather it has been earlier visited by the user earlier or not. If the web site has been visited, the caches aid the computer system in opening that web site. But when the caches do not have the history of the web site the dns lookup begins for the asked web site.

Mechanism of dns lookup
The dns lookup entails the web service provider and the root server. The computer system asks the web service provider to lookup for the web site that has been asked by the user. The world wide web service provider in turn asks the root server to hunt for the IP Address of the domain extension and aid in exactly where to hunt for the web site.

Soon after the root server has informed in regards to the IP address of the domain extension, the ISP checks for the entire domain with the aid of the root server which can be also named recursive name server on account of its functions. The authoritative name server then assists the web service provide to look up for the entire domain on the given domain extension.

The name of the authoritative server is given due t its function because it assists the ISP in reaching the finish tail. This way the ISP reaches the webpage that has been requested by the finish user. For speeding up the entire method, there are caches placed at every level that aid the ISP to reach the IP address directly without having the aid of root servers. The dns lookup assists the ISP when the user visits the web site regularly or has opened the web site in close to future. The caches don't forget the routes that have been followed by the computer system for the web site earlier and the ISP directly routes towards the web site.

Loopholes in the dns lookup
If there's a hat in the dns lookup technique, the entire machine halts or the firewall crashes. The dns lookup technique crashes and on account of this it takes a long time for the search and also decreased efficiency is an additional problem. One of many frequent complications with dns lookup is faulty delegations in the dns sub domain which once again final results into reduced efficiency and speed of the web.



Friday, March 9, 2012

Learn the complete process on how to disable USB port



Computers are the biggest invention for humankind. With advent of time and technologies, personal computer systems are finding high-tech. Computers have turn out to be one particular from the most valuable devices where you are able to shop your information in different formats. USB ports or "Universal Serial Bus" ports are the section or space supplied on the personal computer method where you are able to stick in your flash drives and access them with ease.

However, it has been seen in different circumstances that unused USB drives makes the operating and processing of the method slow. For improving this case, it is best to know how to disable usb port to ensure that you are able to boost your method efficiency with ease. You may feel the distinction when you disable the active unused ports. The booting time of the method will improve and also you will be in a position to function in a better manner on your personal computer systems. Disabling the unused USB ports is advised by professionals and technicians who know the typical hazards involved.

For security reasons, different corporations involved in the operating of information technologies, disable the USB ports to ensure that there is certainly no misuse of information. USB ports helps people in transferring information with ease. As personal computer systems are good storage devices, you are able to take use of USB ports to transfer and save information. However, if you are facing difficulties in the efficiency of the personal computer method, then disabling the unused USB ports can be a better alternative.

Either you are able to do it your self or you are able to take assist from professionals or technicians to ensure that you are able to disable them with ease. Decreasing the amount of connecting devices will automatically boost the efficiency of the personal computer method. As you can find some difficult settings involved whilst disabling the ports, you are able to go by means of critiques on the way to disable USB port to ensure that you are able to do it with ease. You may have to check and recheck the settings as an administrator to ensure that you are able to carry out the task of disabling the USB ports with ease.

A Systematic procedure to understand the way to disable USB port
For anyone who is interested in understanding the way to disable USB port then you've got to follow some ease and uncomplicated actions mentioned beneath to ensure that you are able to disable the USB ports with ease. Below mentioned are the actions:

To check the list of USB ports accessible on your personal computer method, you initial must "Right" click on the icon of "MY COMPUTER"

Subsequent step could be to go the properties and choose the tab of "device manager"

After you've got done that, you are able to see the list of USB ports installed on your personal computer systems with their names.

After you've got decided which port you desire to disable, you are able to again "Right" click on that name and choose the alternative of DISABLE.

Once it can be done, you are able to restart the method and check regardless of whether the procedure is prosperous or not

Taking assist from the professionals to understand the way to disable USB port

For anyone who is interested in understanding the way to disable USB port then a technician or professional will generally be there at your service. It is possible to even get in touch with the consumer service cell and know regarding the procedure to disable unused USB ports with ease.