Auser sends a print job to a network printer and its prints page after page of random characters. he calls the desk and a technician discovers that somehow the wrong printer driver had been loaded on the user's workstation. the technician loads the correct driver, verifies that the system works correctly, and documents the resolution.
what else should she do?

Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e.g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?