35 multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Redundancy = fault tolerance. Multiple paths keep the network working when parts fail.
Packets travel independently and may take different routes; TCP reassembles them in order.
Parallel uses processors; distributed uses separate computers. Don't confuse the two.
Read the explanations even when you got it right, and remember the Internet is not the Web.