Standard buffer managers assume each block is of the same size and costs the same to read. consider a buffer manager that, instead of lru, uses the rate of reference to objects, that is, how often an object has been accessed in the last n seconds. suppose we want to store in the buffer objects of varying sizes, and varying read costs (such as web pages, whose read cost depends on the site from which they are fetched). suggest how a buffer manager may choose which block to evict from the buffer.

The federal sentencing guidelines for organizations set the tone for organizational ethics compliance programs by question 1 options: a) codifying into law incentives for organizations to take action such as developing ethical compliance programs to prevent misconduct. b) forcing all organizations to develop mandatory reporting systems and ethics programs. c) eliminating most of the federal legislation that created inefficient and time-consuming activities for businesses. d) providing detailed guidelines for how to set up organizational ethics programs to guard against unethical conduct. e) providing a thorough examination of company codes of ethics to determine whether they are sufficient.