Knowledge checks

A place I go for information, entertainment, and to communicate with people.

A platform for building network applications.

A collection of billions of computing devices, and packet switches interconnected by links.

A collection of hardware and software components executing protocols that define the format and the order of messages exchanged between two or more communicating entities, as well as the actions taken on the transmission and/or receipt of a message or other event.

A "network of networks".

A collection of hardware and software components executing protocols that define the format and the order of messages exchanged between two or more communicating entities, as well as the actions taken on the transmission and/or receipt of a message or other event.

A place I go for information, entertainment, and to communicate with people.

A collection of billions of computing devices, and packet switches interconnected by links.

A "network of networks".

A platform for building network applications.

Two people introducing themselves to each other.

One person asking, and getting, the time to/from another person.

A student raising her/his hand to ask a really insightful question, followed by the teaching acknowledging the student, listening carefully to the question, and responding with a clear, insightful answer.  And then thanking the student for the question, since teachers love to get questions.

A person sleeping.

A person reading a book.