Question: Why Do Computers Need To Periodically Check The DNS For Websites You Have Already Visited?

Can you know in advance the path a message will take between you and another computer on the Internet justify your answer?

Can you know in advance the path a message will take between you and another computer on the Internet? No, because depending on how much traffic there is between other routers the message will take the fastest route possible to the other computer which could change day to day or hour to hour based on the traffic.

Why don’t we need to know IP addresses quizlet?

We don’t need to know the IP addresses for our favorite sites because the DNS stores them all for us in a directory like database. It would be too difficult for us to remember each IP address for each individual website. What feature of DNS and IP allow the internet to scale?

Why don’t we all maintain our own DNS?

Why do we need a Domain Name System? Domain Name System allows users to have the same url or consistent domain name while IP addresses change frequently. We need DNS because without it users would need to keep on checking the IP addresses of others and of themselves to send messages or view sites.

Why don we need to know IP addresses for our favorite sites?

Because we have the domain name system (DNS). It registers friendly names, e.g., that represent IP addresses. Your computer will consult a DNS service to query the IP address for a domain name you enter, and under-the-hood the connection is made to the IP address.

Why do we need a DNS?

DNS (Domain Name Server) is mainly used to convert human meaningful name (domain name) to computer meaningful name (IP address) in Internet. It allows you to use internet more easily by allowing you to specify a meaningful name on your web browser instead of using IP address.

Why do computers need to check the DNS?

The Domain Name Servers (DNS) maintain a list for all human readable web-sites (example: and their IP addresses. Computers need to periodically check the DNS for websites you have already visited. The reason is because the IP address associated with a given URL is not static, and it can change.