Which bitwise operator is suitable for checking whether a bit is on (1) or off (0)?

Consider this assembly code:

     leal (%rdi,%rdi,8), %eax

     addl %eax, %eax

     ret

Which of the following C functions compiled into the assembly code shown?

The return value is always stored in the following x86-64 architecture's register:

What is the address of the element A[i][j][k] of a 3-dimension array double A[P][Q][R]?

What are the techniques that can avoid buffer overflows?

Which architecture provides separate buses for program and data memory?

With sparse switch statements such as:

switch (a) {

       case 0 : // …

       case 10000 : // …

       default : // …

}

The compiler will use:

What are the right definitions of system verification and validation?

The testq b,a instruction is used to compute without setting destination:

The smallest integer that can be represented by an 8-bit number in 2's complement form is