Test your knowledge with these top questions!
Before public internet access, ARPANET mainly served which community?
Access depended on research ties to the network, unlike the later commercial internet that opened access to the public.
Which network took over ARPANET's military users after a split in 1983?
The split separated military operations from the experimental research network as ARPANET adopted new internet standards.
Which service became a popular way for ARPANET researchers to exchange personal messages?
Ray Tomlinson chose the @ sign for network email addresses because it separated a user from the computer hosting the account.
Which company won the 1968 contract to build ARPANET's switching computers?
The firm began as an acoustics consultancy before becoming a major computer-research contractor.
Which US department funded ARPANET, an early computer network?
The Pentagon's Advanced Research Projects Agency built ARPANET so distant university contractors could share expensive mainframe computers remotely.
Which university hosted ARPANET's first network node in 1969?
UCLA linked its Sigma 7 mainframe to a refrigerator-sized Interface Message Processor, the direct ancestor of modern internet routers.
ARPANET split data into small blocks using which networking method?
Packet switching lets data from many users share a connection instead of reserving a circuit for each conversation.
ARPANET switched to which protocol suite on January 1, 1983?
Vint Cerf and Bob Kahn designed TCP/IP so separate computer networks could connect and communicate as a single "network of networks."
ARPANET researchers sent the first network message in 1969; which letters arrived before the system crashed?
Researchers intended to send "LOGIN", but the connection dropped after transmitting the first two letters.
Mosaic became the first widely popular web browser in 1993 by featuring which visual innovation?
Earlier browsers displayed images in separate windows, whereas Mosaic embedded photos directly alongside text.