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DNS and DNS Types. DNS: Definition: It an internet service that changes the domain names into IP addresses. Purpose: It translate all domain names into IP addresses. So that, the user will be able to access the website. In other word, the computers are only able to access based on IP addresses. Domain name are existed for the used of users. How it works: When a web address is typed in (eg: www.blogspot.com). The internet service provider (ISP) will view the DNS. In which it will translate the domain names into IP addresses (eg: 216.58.196.41). It will directs the user internet connection to the correct website. Diagram: DNS Queries: Definition: Is a demand for information sent from a user's computer to a DNS server. (Request info about website from user PC to DNS Server) Types of DNS Queries: Recursive Query:  DNS client search the DNS servers, one by one to find the IP addresses of the searched domain name. Iterative Query: When DNS client asks the DNS server for...

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Explain: Domain Names: Domain Names is the name of the websites. In other words, the IP address of the website, in which, it allows users to access the website. Domain Names can be found in the combination of letters and numbers or as an extension to the domain names. Such as (.com, .net and so on) DNS Services: DNS Services is a type of server that manages, maintains, processes the Internet domain names and its associated record. Communication protocols to access a website: Communication protocols to access a website is a type of technology that is used to transfer information across the internet. There are a lot of types of communication protocols that are used to access a website: Http: Http also is known as HyperText Transfer Protocol is the protocol of transferring the file on the WWW. Https  Https also is known as HyperText Transfer Protocol Secure is protocols that secure the communication between two systems. Ftp  Ftp i...