Tips to increase the page rank of your blog

I am writing this post with great joy because first time i saw my blog listed in the first page of google search engine results.When i first created the blog and try to catch it in google by trying with different queries i am frustrated with the results because i didnt find it.Search engines like google uses a number called page rank for all the sites.The results will be listed according to the page rank.Web designers use several techniques to increase the page rank and the study of latter is called Search Engine Optimisation.Here are few tricks to increase the page rank of your site.


1.Update your blog at regular interval daily if possible.
2.Send request via email to all the mail id you have with a link to your site.

3.Most importantly include the name of your college,organisation etc which will definitely pay to your expectation.


4.And not but not the least leave comment in the famous websites with a request with link to visit your blog.

APTITUDE QUESTION IN GATE

I saw a question on previous year gate question paper that has attracted me very much.
HOW MANY FOUR DIGIT EVEN NUMBERS ARE THERE SUCH THAT THEIR DIGITS ARE DISTINCT?
Even number means their last digit is either 0,2,4,6 or 8
case 0:The first digit is a number from 1 to 9 because 0 is fixed and therefore 9 choices for first digit and 8 for the second and 7 for the third and last digit is fixed.According to combination number of four digit number ending with 0 is 9*8*7=504
care 2,4,6,8:This case is different because first digit cant be zero therefore 8*8*7=448 therefore for 2
4 6 and 8 we have 448*4=1792.Therefore in total 1792+504=2296 possibilities.Those who have doubt in this answer check it with the following C code which i did.

count=0
for(i=1;i<9;i++)
for(j=0;j<9;j++)
for(k=0;k<9;k++)
for(l=0;l<9;l++)

if(i!=j&&i!=k&&i!=l)
if(j!=k&&j!=l)
if(k!=l)
count=count+1;
This code will give 2296 as output.

DIFFERENCE BETWEEN PERCENTAGE AND PERCENTILE

Yesterday a man from entrance exam coaching centre came to advertise his centre.He told some valuable info about the mba colleges in India.He also explained the difference between percentage and percentile which i dont know till that time.Percentage we all know and percentile denotes the percentage of people scored below us.As CAT(Common Admission Test) has negative marks even if we score zero marks we will get ten percentile because ten percent people score negative marks.

JAVA HAS NO POINTERS

Most of us has a doubt why java has no pointers and it has only internal pointers. As java is mostly used in webs which will to reach many computers throughout the world.The use of pointers will breach the firewall of the system easily which is a threat to network security.Therefore keeping this in mind sun microsystems avoided pointers in java

Hack xp password

There are several methods to hack xp password but the most interesting i have learned is sticky key trick.In windows there is an option called sticky key which can be activated by pressing shift five times which will work from the log on screen even before entering the password.This will enable the user not necessary of clicking one os more keys at the same time.The .exe for this is in c:/windows/system32.If you like to try something different drag and drop the cmd file in same location to desktop and rename it to sethc(exe for sticky key).Then again drag the renamed file back to the system32 folder it will ask whether to rewrite click yes.What you have done is making the command prompt to open instead of sticky keys.Restart the system press shift key five times command prompt will open type compmgmt.msc click local users and groups in the left pane select the account you want to change the password and right click and select set password then done.It will not work in xp professional edition.You can make any exe file to run by renaming it to sethc and following the same procedure.

NEED FOR CAPTCHA

When you creating an account in any website you are prompted to enter the words given in the picture in the box as it is.This is called captcha.It is necessary because some software will create numerous number of account which the account providers doesnt like therefore they provide captcha which will not be identified by the software.In gmail when you enter the wrong password for five times it will request to fill the captcha this is because there are softwares that will try all the combination of words and numbers to hack the account.

BLOCKING A WEBSITE

If you want to block a particular site in your system to tease your friends for fun then edit the following file with notepad.

c:/windows/system32/drivers/etc/hosts

then select the notepad to open the hosts file.

Every website in the world have a corresponding IP address and the URL is only for ease of memorizing.This hosts file contain the mapping of IP address to the domain name.In that file you can find a line


127.0.0.1 localhost


The local host indicates your own systemIf you replace the localhost with google.com then your system is checked for google.com when your browser requests for google.com the the google is blocked.Similarly if you map the IP address of yahoo with google.com then google is opened when you enter yahoo.com in browser.

In windows vista and 7 you are not able to save the edited file which is not a matter in XP.To edit such files drag that file to another location such as desktop and then edit and save.After saving move the file back to the original location then done.

DIFFERENCE BETWEEN DUAL CORE AND CORE 2 DUO PROCESSORS

Some of you may get confused by dual core and core 2 duo as it seems to be entirely different concepts.Dual core processors are like two processors working in serial i.e the two processors do the same job at a given time.The core 2 duo is working in parallel i.e they divide the work between them.Now the latest processor by intel is i7 processors.

JAVA-PLATFORM INDEPENDENT PORTABLE LANGUAGE

Java is a platform independent portable language.Languages such as C and C++ etc will produce an executable file for every program you create.The executable file will work on particular platform only.As java applets are used in network it should run on every platforms.To implement this need java will create a file called class file.The class file is well optimized bytecode of your program.The class file is independent of the platform and therefore it will run on every platform.Only the java compiler is platform dependent but not the class file.We should consider platform only for the creation of compiler.

Googlle

Last october i attended technical symposium held at psg college of technology,Coimbatore.I participated in quiz competition in which a question which i will not forget in my lifetime.The question is "One day the google doodle(logo) was missspelt as googlle that is when and why?".Actually i have also seen that logo on that day and i was predi confused and doesnt try to know the reason behind it.I was disappointed at that moment but didnt give up and searched for the answer from my mobile from the venue.I got the answer that is sep 27 the 11 birthday of google that why intentionally missspelt to denote 11 with double l(ll).Since then i tried to research on every things that i came across.Not only on that day it google frequently changes its logo to mark the important events.

WINDOWS XP MODE

Windows vista and 7 doesnt support some of the softwares that you have worked with windows xp due to compatibility and many other issues.To overcome this problem microsoft has launched a software called WINDOWS XP MODE for windows 7.By using this software you can run the programs that are incompatible with windows 7.This is a free download from microsoft website.Unfortunately it not available for home basic and premium versions of windows 7.It is available only for ultimate and enterprise editions.This is a good idea which avoids the need for installing xp as a dual boot system or virtual installation.

DNS ADDRESS

DNS stands for Domain Name Server.The domain of each website has an ip address.As it is difficult remember the ip addresses each ip address is assigned a domain name.When we enter the url of our website in the browser the DNS will convert it into corresponding ip address then the page is loaded.To fool your friends change the DNS address into any other address.You can also simply type the ip address of the website instead of the url.

ANTI VIRUS WORKING TECHNIQUE AND iVDF

Those who are manually updating their anti virus software has been came across the term iVDF.It stands for incremental Virus Database File.iVDF will be added to the existing VDF file in antivirus.This file contains the signature and characteristics of different viruses,which is used to compare the files during scanning and identify the virus.I think now you are clear about the iVDF concept,it is nothing but is produced to identify the new type of viruses that are spreading from time to time.Every time the file is scanned it compares it with the VDF signatures it have to identify the virus.