APPLICATION LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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HTTPS
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FTP
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DNS
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Nothing is right
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Detailed explanation-1: -How DNS works. DNS servers convert URLs and domain names into IP addresses that computers can understand and use. They translate what a user types into a browser into something the machine can use to find a webpage. This process of translation and lookup is called DNS resolution.
Detailed explanation-2: -The Domain Name System (DNS) is responsible for mapping domain names to numerical IP addresses via designated authoritative nameservers.
Detailed explanation-3: -DNS uses TCP for Zone transfer and UDP for name, and queries either regular (primary) or reverse. UDP can be used to exchange small information whereas TCP must be used to exchange information larger than 512 bytes.
Detailed explanation-4: -The host command is a DNS lookup utility used to convert domain names to IP addresses and reverse IP lookup.