CMTC 230-Test DNS 1. DNS servers convert names (like google.com) to DNS works ov
ID: 3716670 • Letter: C
Question
CMTC 230-Test DNS 1. DNS servers convert names (like google.com) to DNS works over TCP or UDP on port. 2. The command line tool used to query DNS servers is 3. There are two ways a host computer obtains information regarding which DNS servers to use to do lookups. These two methods are (A)_ or 4. In order to look up a company's domain name servers, set the type to NS recorel In order to look up a company's domain mail servers, set the type to VX ccers 5. What does it mean when a DNS query returns a "Non-authoritative answer"? 6. A host machine will cache the IP addresses of names previous resolved. What command can be issued on the host's command line to see this cache? 7. A forward lookup uses DNS record types while reverse lookups use record types. IPv6 lookups use record types in DNS. 8. What does FQDN stand for? Give an example of a FQDN: The root of the Domain Name System (DNS) is represented as 9. 10. A computer can find the address of a domain name by using a locally stored file before asking a DNS server. What is the path and name of that file (in Windows OS)?Explanation / Answer
1.
Domain Name System (or Service) is an Internet benefit that makes an interpretation of space names into IP addresses. Since space names are alphabetic, they're less demanding to recollect. The Internet be that as it may, is extremely in light of IP addresses.
DNS servers to just utilize UDP port 53. Actually DNS questions can likewise utilize TCP port 53 if UDP port 53 isn't acknowledged
2.
nslookup is a system organization charge line device accessible for some, PC working frameworks for questioning the Domain Name System (DNS) to get area name or IP address mapping or for some other particular DNS record.
5.
Fundamentally, it's what the name says it is. A definitive answer originates from a nameserver that is viewed as legitimate for the space which it's restoring a record for (one of the nameservers in the rundown for the area you completed a query on), and a non-definitive answer originates from anyplace else (a nameserver not in the rundown for the space you completed a query on).
It's essentially a qualification between a nameserver that is an authority nameserver for the area you're questioning, and a nameserver that isn't. Nameservers that aren't legitimate are finding their solutions second (or third or fourth...) hand - simply handing-off the data along from elsewhere.
Along these lines, for instance, If I completed a nslookup of maps.google.com at the present time, I would get a reaction from one of my arranged nameservers. It would return as non-definitive in light of the fact that neither my ISP's nameservers, nor my own particular are in the rundown of nameservers for google.com. They aren't Google's nameservers, so they're not the definitive source that makes the NS records.