Quiz submission record for quiz3-2-1 at Wed Jul  7 01:25:47 2004:

Your Answer for Question 1:
Data and instructions are indistinguishable at machine level, so someone could slip in harmful instructions as data and then execute them.

Prevent: load program and make that part of memory read-only.
Tradeof: less flexibility of programming

Your Answer for Question 2:
IEEE allows denormalized numbers(subnormals), which have the same exponent as zero, but a non-zero significand. They allow a number to degrade in significance until it becomes zero.

Your Answer for Question 3:
to increase precision (0.5's exponent is smaller)

Your Answer for Question 4:
for: portability, convenient(for programmers) and easy
against: associative and little-used


Your unique submission ID is quiz3-2-1-cs61c-bc-1089188747-642.