use the following for the blanck spaces, and explain why you did it? root DNS se
ID: 3816863 • Letter: U
Question
use the following for the blanck spaces, and explain why you did it?
root DNS server, TLD DNS server, authoritative DNS server, local DNS server, lamar.edu, google.com, .edu or .com
When a host within the lamar.edu domain needs to visit a webserver within the google.com domain, the host needs to contact the ______ within the ______ domain to resolve the ip address of the webserver.
When a webserver within the google.com domain changes its ip address, the ______ within the ______ domain needs to be notified to update its database.
When an authoritative DNS server within the google.com domain changes its ip address, the ______ in charge of the ______ domain needs to be notified to update its database.
When a local DNS server does not have the ip address that it is asked to resolve in its cache, it needs to contact ______ FIRST, but EVENTUALLY, gets such ip address from the ______________
Explanation / Answer
When a host within the lamar.edu domain needs to visit a webserver within the google.com domain, the host needs to contact the root DNS server within the lamar.edu domain to resolve the ip address of the webserver.
When a webserver within the google.com domain changes its ip address, the local DNS server within the google.com domain needs to be notified to update its database.
When an authoritative DNS server within the google.com domain changes its ip address, the TLD DNS server in charge of the .edu or .com domain needs to be notified to update its database.
When a local DNS server does not have the ip address that it is asked to resolve in its cache, it needs to contact root DNS server ,FIRST, but EVENTUALLY, gets such ip address from the authoritative DNS server .
First whenever the webserver search is given in the browser it first checks the rootDNS for that zone to identify the ipaddress.
When the ipaddress is changed for the specific domain that local domain server needs to be notified to update the value. and then the top level domain is also need to be notified for the value updation.
When the local server does no get the ipaddress it first needs to contact root DNS server for the ipaddress
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