Question

What is the significance of a 32-bit number whose first hexadecimal digit is 8 or above?

a.

It is not a valid user-mode pointer

b.

It is a valid user-mode pointer

c.

It is a valid kernel-mode pointer

d.

It indicates the size of the memory being accessed

Posted under Reverse Engineering

Answer: (a).It is not a valid user-mode pointer Explanation:The most significant bit of a 32-bit number is always clear in every address available to applications. Therefore, a 32-bit number whose first hexadecimal digit is 8 or above is not a valid user-mode pointer.

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Q. What is the significance of a 32-bit number whose first hexadecimal digit is 8 or above?

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