What are the different levels of caching mentioned in the text?
World of Computer Networking Your CCNA start - Domain Name System (DNS) Query Resolution Caching Process
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Information Technology (IT), Architecture
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University
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The video tutorial explains the process of DNS resolution and the importance of caching in optimizing DNS performance. It covers different levels of caching, including web browser, operating system, and DNS recursive resolver caches. The tutorial emphasizes the significance of cache time-to-live (TTL) to ensure data accuracy and prevent connectivity issues. It concludes with a brief mention of DNS round robin responses.
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5 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
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3 mins • 1 pt
How does the web browser cache affect DNS requests?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What happens if a DNS resolver does not have the required records in its cache?
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4.
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3 mins • 1 pt
Explain the process of how a DNS resolver queries an authoritative name server.
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5.
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3 mins • 1 pt
Why is it important for DNS cache to have a specific time to live?
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