A system with $64GB$ memory with a block size of $8$ words, and a $64KB$ direct map cache. The word size is $4$ bytes.

What is the number of address bits reserved for the Line number field?

$16$

$11$

$18$

$13$

What is the number of bits reserved for the Tag field?

$18$

$25$

$13$

$20$

The main memory block # $4095($in decimal$)$ will directly map to cache line?

$1$

$4095$

$2047$

$1023$

What is the number of bits reserved for the Tag field if this was a $16-$way set associative cache?

$20$

$24$

$16$

$18$