It's a question from computer networking course (Topic: DNS).
Can anyone provide me with a full detialed answer?
![8. [10 pts.] Explain why DNS recursive queries may pose a performance issue.](http://img.homeworklib.com/questions/605bd810-a30b-11eb-b8e1-b3d57d20a527.png?x-oss-process=image/resize,w_560)
Homework Answers
Domain name system (D.N.S.) is the system that is used to translate human-memorable domain names like Google.com,facebook.com etc. essy to learn side address.
Recursive querues:DNS servers are not required to support recursive queries.
DNS recursive queries may pose a performance issue :
1:Servers supporting recursive DNS queries are vulnerable to phony requests that flood a particular IP address with the results of each server's query. This can overwhelm the IP address with a volume of traffic too large to be processed.
2: Cache poisoning results from someone tricking a DNS server into believing that a fake DNS query response is authentic. Because responses are normally cached, this false information can be distributed to users of that server
3:When DNS servers are not configured correctly, queries using RFC1918 addressing (also known as "private" addressing) may be leaked to the root name servers, causing a degradation in service for legitimate queries to those servers.
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It's a question from computer networking course (Topic:
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Anyone can help me answer this question around 300 words each
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