- What did early telephone operators do?
Maintained cell phone towers
Connected pairs of wires to allow people to talk
Installed copper wire between cities
Sorted packets as they went to the correct destination
- What is a leased line?
A boundary between leased and owned telephone equipment
A connection between a keyboard and monitor
A wire that ran from one phone company office to another
An "always on" telephone connection
- How long might a message be stored in an intermediate computer for a store-and-forward network?
less than a second
no more than four seconds
less than a minute
possibly as long as several hours
- What is a packet?
A technique for wrapping items for shipping
A small box used for storage
A portion of a larger message that is sent across a network
The amount of data that could be stored on an early punched card
- Which of these is most like a router?
A mail sorting facility
A high-speed train
An undersea telecommunications cable
- What was the name given to early network routers?
Interfaith Message Processors
Internet Motion Perceptrons
Instant Message Programs
Interface Message Processors
- In addition to breaking large messages into smaller segments to be sent, what else was needed to properly route each message segment?
A source and destination address on each message segment
An ID and password for each message segment
A small battery to maintain the storage for each message segment
A small tracking unit like a GPS to find lost messages
- Why is it virtually free to send messages around the world using the Internet?
Because governments pay for all the connections
Because advertising pays for all the connections
Because so many people share all the resources
Because it is illegal to charge for long-distance connections