ARPANET, the forerunner of the internet, carried its first message in which year?
- A.1959
- B.1969
- C.1979
- D.1989
Correct answer
Explanation
The correct answer is B, 1969. 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. That experiment proved that packets could be switched between distant machines and grew into the internet.
Option A, 1959, is too early: the packet-switching idea had not yet been worked out and no such network existed. Option C, 1979, falls well after ARPANET was working and is remembered instead for early newsgroups. Option D, 1989, is the year Tim Berners-Lee proposed the World Wide Web at CERN, which is a service on the internet and not the network itself; papers often place 1989 as a distractor for exactly this reason. Remember the pair 1969 for ARPANET and 1989 for the Web.
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
Show answer
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 →Who is credited with inventing the World Wide Web?
- A.Vinton Cerf
- B.Charles Babbage
- C.Tim Berners-Lee
- D.Ray Tomlinson
Show answer
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.*
Show answer
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.
Read the full explanation →What is the default port number of HTTPS?
- A.21
- B.80
- C.110
- D.443
Show answer
HTTPS is HTTP wrapped in encryption, and web servers listen for it on port 443. When an address begins with https, the browser opens a secure channel on that port, and the padlock shown beside the address means the traffic on it is coded.
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