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TCP/IP

TCP/IP. DNS Server. The DNS Server has one primary function: to resolve host names to an IP address. Primary DNS Server. A Primary DNS Server is one that is the primary authority for the zone database records for a particular zone

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TCP/IP

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  1. TCP/IP

  2. DNS Server • The DNS Server has one primary function: to resolve host names to an IP address

  3. Primary DNS Server • A Primary DNS Server is one that is the primary authority for the zone database records for a particular zone • The primary DNS server for abc.com first tries to resolve the request locally by checking its own records.

  4. WINS • The Windows Internet Naming Service (WINS) provides tools that helps Windows to manage the NetBIOS names of servers and workstations in a TCP/IP networking environment. • Resolves NetBIOS names to IP addresses

  5. WINS Features • WINS is dynamic, and is updated when machines are started or stopped, or by replication with other WINS Services. • When a name is registered, it will be reserved for that one computer, further simplifying naming schemes. Each computer will always have its own unique name.

  6. The Differences between WINS and DNS

  7. HOSTS Files • In TCP/IP networks, all known host names and their associated IP addresses are stored in a simple text file called HOSTS.

  8. Time To Live (TTL) • Some hosts know about others who know about them, the packets sometimes ended up in a circle, routing. • This routing loop was controlled with a Time To Live (TTL) value included in each packet.

  9. Dynamic and Static IP • Dynamic – assigned by DHCP • Static – manually entered, fixed

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