WEB BROWSERS TECHNOLOGY
THE INTERNET
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A link to a virus that can be downloaded accidentally from a site
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The routing of packets through a node(server) due to a node being unavailable
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The resending of a packet that was lost in processing
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The mapping of a domain name to an IP address
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Detailed explanation-1: -The Domain Name System (DNS) maps human-readable domain names (in URLs or in email address) to IP addresses. For example, DNS translates and maps the domain freecodecamp.org to the IP address 104.26. 2.33.
Detailed explanation-2: -A domain name (often simply called a domain) is an easy-to-remember name that’s associated with a physical IP address on the Internet. It’s the unique name that appears after the sign in email addresses, and after www. in web addresses.
Detailed explanation-3: -Redundancy in routing The availability of multiple paths increases the redundancy of a network. Diagram with four routers and four lines connecting them. Line goes from Oakland to Austin, line goes from Austin to New York, line goes from Austin to Tampa, line goes from New York to Tampa. The lines are bidirectional.
Detailed explanation-4: -One example of this hierarchy is the Domain Name System(see card 11). The internet is redundant because there are multiple names/addresses used to define the same thing, like domain names and IP addresses.