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What kind of query DNS understands?

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What kind of query DNS understands?

There are three types of queries in the DNS system:

  • Recursive Query.
  • Iterative Query.
  • Non-Recursive Query.
  • DNS Resolver.
  • DNS Root Server.
  • Authoritative DNS Server.

How does DNS do its query?

DNS queries resolve in a number of different ways. The DNS server can use its own cache of resource record information to answer a query. A DNS server can also query or contact other DNS servers on behalf of the requesting client to fully resolve the name, then send an answer back to the client.

What is DNS used for in Linux?

The Domain Name System (DNS) is used to resolve (translate) hostnames to internet protocol (IP) addresses and vice versa. A DNS server, also known as a nameserver, maps IP addresses to hostnames or domain names.

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What type of query is used to ask a DNS server about another DNS server?

Iterative queries
Non recursive or Iterative queries are used by DNS servers and essentially instruct the other DNS server to return an answer or return the address of another DNS server that may know the answer.

What is query type A?

Type “A” for IPv4 addresses. Type “PTR” (Pointer) that specified a reverse query (requesting the FQDN – Fully Qualified Domain Name – corresponding to the IP address you provided) Type “NS” (Name Server) to get information about the authoritative name server.

What is a standard query?

A query that is created for every InfoProvider in the BW system by default is called a standard query. The standard query is created when an InfoProvider is accessed for the first time. It contains all characteristics of an InfoProvider as free characteristics and a structure with all key figures of the InfoProvider.

How DNS configure in Linux?

Configure dns slave server To configure slave DNS server go on client1 system. First test connectivity from dns server by ping commands and check necessary rpm. bind and caching-nameserver rpm is required to configure dns. check them for install if not found install them.

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How does DNS work in Unix?

The DNS Recursive Resolver receives the user request for the domain name translation into IP address and passes the request to the Root Name Server, the DNS Recursive Resolver has a list containing all Root Name Servers addresses to find them.

What is query type?

The three types of queries are Navigational search queries, Informational search queries, Transactional search queries.