the answer to the question is a Embedded ( I just learned this like a month ago so im pretty sure it right :))
The answer is the second option "false." ISDN does not stand for Internet Services Dynamic Network it stands for Integrated Services Digital Network. ISDN is the international communication center for sending data, video, and voice over telephone wires.
Hope this helps.
The issue would be that the memory was not installed or was not detected by the system. If this happens, the system boot will fail and a beep code is heard. The system would not show anything since all of the software are in the memory which was not installed or detected.
