Why is it that if marie has 4k words of main memory, addresses musthave 12 bits?

Suppose we have a byte addressable computer that has a 32-byte cache with 8 bytes per block. the memory address is 8 bits long. the system accesses memory addresses (in hex) in this exact order: 6e, b9, 17, e0, 4e, 4f, 50, 91, a8, ab, ad, 93, and 94. (a) assuming the cache is direct mapped, what memory addresses will be in cache block 2 after the last address has been accessed? (b) assuming the cache is direct mapped, what is the hit ratio for the entire memory reference sequence given, assuming the cache is initially empty? (c) assuming the cache is 2-way set associative with a lru replacement policy, what is the hit ratio?

The more powerful, 60 volt cables and the main power shut off on an hev are both colored orange

Jamie has to enter the names, employee id’s, and income of a group of employees into a worksheet. which option will jamie use to describe the data