John works for internal computer specialists, which focuses on small business owners resolve mis infrastructure issues. john's tasks include cleaning and replacing motherboards, cables, and internal components such as dvds and hard drives. what does john's role at internal computer specialists focus on fixing?

Which text format is this, "the text is transcribed exactly as it sounds and includes all the utterances of the speakers. "?

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?

Write an essay on online collaboration, how to do it, the challenges, resolving the challenges, and consider whether the risks are greater than rewards. ( need )