A user account includes _____.

The Internet address 128.0.0.1 is also known as __________.

a. localhost. b. remotehost. c. localserver. d. remoteserver.

A train protection system automatically applies the brakes of a train if the speed limit for a segment of track is exceeded, or if the train enters a track segment that is currently signaled with a red light (i.e. the segment should not be entered). Giving reasons for your answer, chose a reliability metric that might be used to specify the required reliability for such a system.

What will be an ideal response?