Advantages of z-buffer or depth buffer

Question

Write down the short note on the advantages of z-buffer or depth buffer?

Answer 1

The advantages of depth-buffer or z-buffer are as:

i) The z-buffer technique is simple to apply and it needs no sorting of surface in a scene.

ii) In z-buffer algorithm, an arbitrary number of objects can be handled as each and every object is functioned one at a time.

iii) Simple hardware implementation.