For the SRE example in Section 12.2.2, we patched the code by changing a test instruction to xor. a. Give at least two ways—other than changing test to xor—that Trudy could patch the code so that any...

For the SRE example in Section 12.2.2, we patched the code by changing a test instruction to xor.

a. Give at least two ways—other than changing test to xor—that Trudy could patch the code so that any serial number will work.

b. Changing the j z instruction that appears at address 0x401032 in Figure 12.4 to jnz is not a correct solution to part a. Why not?