The system that converts a domain name such as india.gov.in into its numeric address is called
- A.DNS
- B.DHCP
- C.HTTP
- D.URL
Correct answer
Explanation
The correct answer is A, DNS. The Domain Name System is the directory of the internet. People remember names, while machines route traffic by numbers, so a DNS server looks up the name typed in the browser and returns the matching IP address before the page is fetched. It listens on port 53.
Option B, DHCP, the Dynamic Host Configuration Protocol, hands out an IP address to a machine when it joins a network; it allots addresses instead of translating names. Option C, HTTP, carries the page once the address is known and does no translation. Option D, URL, the Uniform Resource Locator, is the written address of a page and contains the domain name, but it is a form of address, not the service that resolves one. Only DNS does the conversion.
Read the full article: Internet and Email: Protocols, Ports and Terms
Practice Questions
View allDeleted emails are stored in
- A.Drafts
- B.Trash
- C.Inbox
- D.Sent mail
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When a letter is deleted from a mailbox it is not wiped out at once. It is moved to a folder called Trash, or Bin in some services, and kept there for a fixed number of days so that a letter deleted by mistake can be restored.
Read the full explanation →In Gmail, the email address of the recipients can be entered in __________ field.
- A.Subject
- B.To
- C.Message
- D.From
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The To field of a mail window is meant for the addresses of the people the letter is written to.
Read the full explanation →ARPANET, the forerunner of the internet, carried its first message in which year?
- A.1959
- B.1969
- C.1979
- D.1989
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ARPANET was funded by the Advanced Research Projects Agency of the United States Department of Defense, and in 1969 it linked computers at four American universities and passed its first message between them.
Read the full explanation →Who is credited with inventing the World Wide Web?
- A.Vinton Cerf
- B.Charles Babbage
- C.Tim Berners-Lee
- D.Ray Tomlinson
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Working at CERN in Switzerland, he proposed a system of linked documents in 1989, wrote the first browser and server, and put the first website online in 1991.
Read the full explanation →Which symbol was chosen by Ray Tomlinson to separate the user name from the host name in an email address?
- A.#
- B.&
- C.@
- D.*
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Ray Tomlinson sent the first message between two computers on ARPANET in 1971 and needed a character that would never appear in a person's name.
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