Question

Determine the hexadecimal value of a mask that can be used to complement the values of thefirst and third bits of f1ag and leave all other bits unchanged. Determine the bit operation thatshould be used with the mask value to produce the desired result

Answer 1

Answer:

Let our mask be 1010000...000. Notice that, if we apply XOR operation to any number with this mask, the first and third bits will be complemented and all other bits will be unchanged. Since for each individual bit, XOR with 0 does not change the value of bit and XOR with 1 changes the value of bit.

Explanation:

To give a hexadecimal number, we should know the number of bits in representation of number.