7. In a cache system we have the following attributes: 256 MB of physical memory space 4 MB of cache 256KB per cache line Determine number of lines in cache, b) Determine the number of address bits out of the processor. c) Determine the number of bits needed for the block offset section of the address. d) If our cache is 4-way set associative, how many sets are there in the cache? e) How many bits are needed to select sets in this cache? f) Determine the number of bits of the tag, if 8-way set associative cache is implemented. Fill the table below with proper number of bits in each portion of the address bit map: