Give the most popular cache replacement policies. Explain any differences. Paging systems sometimes use the working set model. Many modern RISC architectures have two versions of the arithmetic instructions, one that sets the condition codes and one that does not. You can do any two of the four questions in Part B. Credit cards and debit cards can be used for transactions but any such transaction can be traced back to you via your card number.
Cash transactions provide privacy and anonymity.
Explain how such a system would be structured. A small network with n sites uses the telephone system to send messages between nodes. Unfortunately a computer problem at the phone company causes the messages to be sent randomly to other nodes. A clever computer scientist says this is not a problem. We simply check incoming messages.