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Check your DNS knowledge

Source: Internet
Author: User
Tags nameserver
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Check your DNS knowledge-Linux Enterprise Application-Linux server application information. The following is a detailed description. Turn: Haha, this is what I found on the Internet! Let's take a look. Let's answer it. These problems seem very simple, but they are not. I will announce the answer one week later !!

If you think you still know about dns, try to answer the following questions:
1. What is @ in the zone data file? What does IN mean?
2. Why does the dig sometimes support querying through a nameserver while nslookup tells that the nameserver cannot be found?
3. What is lame server?
4. Will you perform reverse IP address resolution when the subnet segment is not 8-bit or 8-bit?
5. Is there more forward resolution or reverse resolution on the Internet?
6. Disable the zone data transmission function. Will your hosts in the domain be secure?

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Related Keywords:
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