It is 16 way set associative. As it is given 26 bit physicaL address n 16 K frames then 12 bits are neede for data among 26 14 bits are left nw 12 bit tag so 2 bit r for sets , 2 bits means 4 sets are there total 64 pages creating 4 sets each set is of 16 pages so 16 way set associative...