Question: How Does DNS Work Inside And Outside The Network?

When a stub resolver gets a request from an application, it first checks its own cache to see if it has the record.

If it does not, it then sends a DNS query (with a recursive flag set), outside the local network to a DNS recursive resolver inside the Internet service provider (ISP).

How does DNS work on local network?

Instead, you just connect through a domain name server, also called a DNS server or name server, which manages a massive database that maps domain names to IP addresses. The proper term for this process is DNS name resolution, and you would say that the DNS server resolves the domain name to the IP address.

How DNS works step by step?

How does DNS work?

  • Step 1: Request information.
  • Step 2: Ask the recursive DNS servers.
  • Step 3: Ask the root name servers.
  • Step 4: Ask the TLD name servers.
  • Step 5: Ask the authoritative DNS servers.
  • Step 6: Retrieve the record.
  • Step 7: Receive the answer.

What is domain name space in computer networks?

Domain namespace. Alternatively referred to as a namespace, a domain namespace is a name service provided by the Internet for Transmission Control Protocol networks/Internet Protocol (TCP/IP). DNS is broken up into domains, a logical organization of computers that exist in a larger network.

DNS and Active Directory

Domain Name System (DNS) is a name resolution method that is used to resolve host names to IP addresses. DNS is a namespace. Active Directory is built on DNS. DNS namespace is used internet wide while the Active Directory namespace is used across a private network.