Question

what are applicants of Domain name system​

Answer 1

Answer:

Domain Name System in Computer Networks

DNS stands for Domain Name System. DNS is a directory service that provides a mapping between the name of a host on the network and its numerical address. DNS is required for the functioning of the internet. ... Therefore, the domain name is more reliable than IP address.

Answer 2

Answer:

The domain name system is fundamental infrastructure required for the Internet to work and therefore fundamental to a lot of activities that an IT organization has to support. To do so, they need a strong authoritative DNS that is well maintained.

Because of CIRA’s role as the .CA registry we spend a lot of time thinking about it. To test the authoritative DNS resiliency, we queried over 100,000 authoritative servers for .CA domains and found that 93% of them failed to respond at least once during the testing period.

But what does a failed response mean? If you are running your DNS on the same network resources then maybe it means your entire site appears offline because of a router issue. If you are running multiple DNS server locations then maybe one is down for maintenance and the others can pick up the slack (with some added latency to the end user). If you are under DDoS then maybe everything is down. What is important is that with a well architected anycast DNS service there need never be a situation where a server appears offline. Combining globally dispersed nodes with redundant servers at each node allows maintenance on one server at a time while offering a faster and more resilient DNS.

• Primary website
• Marketing campaign websites
• Email servers
• Customer support websites
• Online resource libraries
• Inside sales web portals
• Multi-tier web applications
• P2P resources
• Databases
• Multiplayer games
• External Webmail access
• VPN access to some resources
• Customer resource management (CRM) mail and landing pages using CNAME
• Marketing automation email and landing pages using CNAME
• 3rd party mass email tools and services using CNAME
• Online meeting services
• Webinar services
• Instant messaging tools
• IoT applications using the DNS (i.e. beacons)
• Brochures and datasheets with links