83.
Two processors A and B have clock frequencies of 700 Mhz and 900 Mhz respectively. Suppose A can execute an instruction with an average of 3 steps and B can execute with an average of 5 steps. For the execution of the same instruction which processor is faster.

87.
In LRU, the referenced blocks counter is set to'0? and that of the previous blocks are incremented by one and others remain same, in the case of . . . . . . . .