More than one word are put in one cache block to

The main memory of a computer has $$2$$ $$cm$$ blocks while the cache has $$2$$ $$c$$ blocks. If the cache uses the set associative mapping scheme with $$2$$ blocks per set, then block $$k$$ of the main memory maps to the set:

A $$ROM$$ is used to store the table for multiplication of two $$8$$ bit unsigned integers. The size of $$ROM$$ required is

The capacity of a memory unit is defined by the number of words multiplied by the number of bits/word. How many separate address and data lines are needed for a memory of $$4K$$ $$ \times $$ $$16?$$