What to do if Computer is not responding or Hanged?

While using our computer some times it may be happened that due to some reason Computer is not respond or hanged for few minutes.

This problem may be occurred due to the following reasons:
1. Large numbers of applications are running at a time.
2. Low Capacity of RAM.
3. Inserting Scratched CD/DVD in DVD drive.
4. Trying to run invalid programs.
5. Trying to play broken or incomplete media files.
and many more.

But if it is not respond for a long time then what to do?
1. Press ALT+CLT+DEL.
2. In Windows Task Manager select the process of corresponding application running.
3. Click on End Task.
If Windows Task Manager is not opened after pressing ALT+CLT+DEL, then Long press the power button to shut down your system and reboot again.

Difference between Back-links and Hyperlinks?

Back-link and hyperlinks both of these are used to interconnect two websites or web contents but what is the basic difference between them and which one is better to use in terms of search engine optimization?

Back link is a any type of link comes from another website or source. For example, incoming links, inbound links, in links, and inward links etc. Back links are very important to get popularity www world. Maximum popularity depends on maximum back links.

Union Government approves National Cyber Security Policy

A "National Cyber Security Policy" was approved by The Union Government of India on on 8 May 2013. The objective of the policy is to create a secured computing atmosphere across the country and build capacities to strengthen the current set up with focus on manpower training..

The policy was approved by the Cabinet Committee on Security (CCS) that lays stress on augmentation of the India’s indigenous capabilities in terms of developing the cyber security set-up.
 

What are the basic difference between HTML and XHTML?

For all web designers HTML is the basic things to be used in all web pages. There are not so many differences between HTML and XHTML. Some basic differences are:
 
HTML is Hypertext Markup Language.
XHTML is Extensible Hypertext Markup Language.

What is SPAM or JUNK emails actually?

Spams or junks are unwanted messages.The spam or junk messages include fake lottery wining information, advertisement messages, ask for registration mails. Spammers target the customers by sending such emails to subscriber or customer.