Linux Training in Chandigarh (1)

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Linux Training in Chandigarh
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DNS SERVER IN LINUX

• A DNS server is a computer server that contains a
  database of public IP addresses and their
  associated hostnames, and in most cases, serves
  to resolve, or translate, those common names to
  IP addresses as requested.

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Why is DNS important?

• DNS is like a phone book for the Internet. If you
  know a persons name but dont know their
  telephone number, you can simply look it up in a
  phone book. DNS provides this same service to the
  Internet.

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How does DNS work?

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

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OFFICE SCO 23-24-25, LEVEL-3,
near passport office,
Sector 34A, Chandigarh PHONE
9988741983, 9914641983 Visit
http//cbitss.in/linux-training-in-chandigarh/
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