Tips

When you burn a CD or DVD, you get a “Cyclic Redundancy Check” error message when you want to open a file inside the CD / DVD. But the CD/DVD has no scratches or dirts, so why is this happening? How to read the contents of the CD / DVD ?

A “Cyclic Redundancy Check”, or “CRC”, is an error detection mechanism that makes sure that the data you’re trying to read from media, such as hard disks, CDs and DVDs, is actually correct.

Solution:

Very easy. Open the CD/DVD in another computer CD / DVD drive. Most of the time, new laptop’s More >

People who create electronic spam are called spammers (especially by email)

Spammers are turning a profit despite only getting one response for every 12.5m e-mails they send, finds a study.

By hijacking a working spam network, US researchers have uncovered some of the economics of being a junk mailer. The analysis suggests that such a tiny response rate means a big spam operation can turn over millions of pounds in profit every year. It also suggests that spammers may be susceptible to attacks that make it more costly to send junk mail.

The spam study was carried out in early 2008 by computer More >

The ‘ipconfig /flushdns’ command serves an equally useful function. DNS (‘Domain Name System’) is the system that maps IP addresses to Internet addresses like http://www.pcstats.com (among other things). By default, your computer system keeps a DNS resolver cache which stores the IP address attached to frequently used DNS names (and Internet URLs, which are essentially the same thing). This enables your system to bring up frequently accessed web pages quickly, without the need to first consult a chain of DNS servers on the Internet to find out what IP address is associated with, say www.pcstats.com.

If you are in a network that More >