In which one of the following page replacement policies, Belady’s anomaly may occur?

How many $$32K\,\, \times \,\,1RAM$$ chips are needed to provide a memory capacity of $$256$$ $$K$$-bytes?

What is the swap space in the disk used for?

Consider a program $$P$$ that consists of two source modules $${M_1}$$ and $${M_2}$$ contained in two different files. If $${M_1}$$ contains a reference to a function defined in $${M_2}$$, the reference will be resolved at.