1. Assume that a Ram begins at the address $1000 and the size pf this ram is 512 Bytes. The options are:

a) $11FF
b) $1200
c) $2024
d) $1201

The last address of the RAM can be calculated as:

$1000 + 512 - 1 = 1511$

Therefore, the correct option would be (a) $11FF$, since it is the highest address that falls within the range of the RAM.

To determine the last address of the RAM, we need to calculate the sum of the starting address and the size of the RAM.

Starting address = $1000
Size of RAM = 512 Bytes

To calculate the last address, we add the starting address and the size of the RAM:

$1000 + 512 = $11FF

Therefore, the correct answer is option a) $11FF.