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How a dns works?

author
Munashe Chesango
  • Total 1 Answer
  • 1378
Can You answer this question?
author
Mr. Piyush Kataria

DNS stands for Domain Name System.DNS is UDP based based and uses port number 53.

It works on Request and Reply Process.

User send a query to resolve a domain name and server sends a reply.

Query -- IP address of www.google.com

Response- 13.45.67.98

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1/1 ErrorException in Filesystem.php line 111: file_put_contents(/var/www/html/storage/framework/sessions/WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc): failed to open stream: No space left on device

  1. in Filesystem.php line 111
  2. at HandleExceptions->handleError(2, 'file_put_contents(/var/www/html/storage/framework/sessions/WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc): failed to open stream: No space left on device', '/var/www/html/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php', 111, array('path' => '/var/www/html/storage/framework/sessions/WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc', 'contents' => 'a:4:{s:6:"_token";s:40:"FkGZTi6DFcubuS8BuXwSVFK9oU1J30zNIjprwO40";s:11:"viewed_urls";a:1:{i:0;s:15:"how-a-dns-works";}s:9:"_previous";a:1:{s:3:"url";s:43:"http://www.networkbulls.com/how-a-dns-works";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 'lock' => true))
  3. at file_put_contents('/var/www/html/storage/framework/sessions/WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc', 'a:4:{s:6:"_token";s:40:"FkGZTi6DFcubuS8BuXwSVFK9oU1J30zNIjprwO40";s:11:"viewed_urls";a:1:{i:0;s:15:"how-a-dns-works";}s:9:"_previous";a:1:{s:3:"url";s:43:"http://www.networkbulls.com/how-a-dns-works";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 2) in Filesystem.php line 111
  4. at Filesystem->put('/var/www/html/storage/framework/sessions/WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc', 'a:4:{s:6:"_token";s:40:"FkGZTi6DFcubuS8BuXwSVFK9oU1J30zNIjprwO40";s:11:"viewed_urls";a:1:{i:0;s:15:"how-a-dns-works";}s:9:"_previous";a:1:{s:3:"url";s:43:"http://www.networkbulls.com/how-a-dns-works";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', true) in FileSessionHandler.php line 83
  5. at FileSessionHandler->write('WzHAgmGmfz1b3TJ7N1tWLKnC6a07Yqevm8CdcUoc', 'a:4:{s:6:"_token";s:40:"FkGZTi6DFcubuS8BuXwSVFK9oU1J30zNIjprwO40";s:11:"viewed_urls";a:1:{i:0;s:15:"how-a-dns-works";}s:9:"_previous";a:1:{s:3:"url";s:43:"http://www.networkbulls.com/how-a-dns-works";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}') in Store.php line 128
  6. at Store->save() in StartSession.php line 88
  7. at StartSession->terminate(object(Request), object(Response)) in Kernel.php line 216
  8. at Kernel->terminateMiddleware(object(Request), object(Response)) in Kernel.php line 187
  9. at Kernel->terminate(object(Request), object(Response)) in index.php line 59
  10. at require_once('/var/www/html/public/index.php') in index.php line 20