I think it is D
Hope my answer help you?
You can add the MAC addresses of hosts that you want to allow the access in a database, if you are working on a large scale, and then compare the MAC address of the user in you network wall and allow th users that are allowed.
Or if you are working on a small scale then in your program you can save the MAC in an array or model class and compare when the user will access.
Answer:
Question: Assume there are three small caches, each consisting of four one word blocks. One cache is direct-mapped, a second is two-way set-associative, and the third is fully associative
Explanation:
Question: Assume there are three small caches, each consisting of four one word blocks. One cache is direct-mapped, a second is two-way set-associative, and the third is fully associative