I need help with the following MIPS machine assembly question:

Consider the jump instruction ' j ' destination_address

a) How many bits are allocated for the destination_address?

b) What range of addresses that we can reach using the number of bits you specified in Part (a). Before the jump, next instruction to be executed is PC+4.

c) Where do we derive the other bits to form a 32-bit word as a valid program counter (PC)?

d) If we need to jump to an address that is beyond the range specified in Part (b), how would we jump to that destination?