A component called a DNS Resolver is responsible for checking if the hostname is available in local cache, and if not, contacts a series of DNS Name Servers, until eventually it receives the IP of the service the user is trying to reach, and returns it to the browser or application. This usually takes less than a second. DNS Types: 3 DNS Query ... DNS denial-of-service attacks, cache poisoning, and DNS hijacking threaten the availability and security of your applications. BIG-IP DNS protects against DNS attacks and enables you to create polices that provide an added layer of protection for your applications and data. DNS attack protection features include:

5 Ways Cheatography Benefits Your BusinessCheatography Cheat Sheets are a great timesaver for individuals - coders, gardeners, musicians, everybody!But businesses can benefit from them as well - read on to find out more. IC Chip Data Sheets The following links are to local copies of pages from the TTL Data Book.