Q159
What is the size of the reserved memory area?
A.
64 kb
B.
384 kb
AnswerC.
640 kb
D.
1024 kb
E.
None of the above
Answer: Option B
Solution
Answer: Option B
Solution:
In DOS memory management, the upper memory area (UMA) refers to memory between the addresses of 640 KB and 1024 KB (0xA0000–0xFFFFF) in an IBM PC or compatible. IBM reserved the uppermost 384 KB of the 8088 CPU's 1024 KB address space for ROM, RAM on peripherals, and memory-mapped input/output.