Graphics questions

the anti-aliasing technique which allows shift of 1/4, 1/2 and 3/4 of a pixel diameter enabling a closer path of a line is

1. pixel phasing
2. filtering
3. intensity compensation
4. sampling technique

Ans 3 

the process of transforming one bit pattern intothe process of transforming one bit pattern into
another by bit-wise operations is called

1. masking 2. pruning
3. biting 4. chopping
  
Ans 3
1. masking
    is AND operation to convert a preknown number of digits to 0
    if these are the bits    101100110 and if 4 LSBs are to masked AND it with 111110000

2. pruning
   to delete cetain bits.
3. biting
    ANS
4. chopping
   to remove a certain number of bits