Consider a system using RR scheduling with a fixed quantum q. Every context switch takes s ms. Any given thread runs for an average of t ms before it blocks or terminates. (a) Determine the fraction of the CPU time that will be wasted because of context switching for each of the following cases:.
i. t < q
ii. t >> q (i. e, t is much greater than q)
iii. q approaches 0.
(b) Under what condition will the wasted fraction of CPU time be exactly 50%

The open systems interconnection (osi) reference model: defines standards for many aspects of computing and communications within a network. is a generic description for how computers use multiple layers of protocol rules to communicate across a network. defines standards for wireless local area network (wlan) communication protocols. details the advantages and disadvantages of various basic network cabling options.

Suppose you are an ad-serving company and you maintain a log of cookie data for ads you serve to the web pages for a particular vendor (say amazon). a. how can you use this data to determine which are the best ads? b. how can you use this data to determine which are the best ad formats? c. how could you records of past ads and ad clicks to determine which ads to send to a given ip address? d. how could you use this data to determine how well the technique you used in your answer to part c was working? e. how could you use this data to determine that a given ip address is used by more than one person? f. how does having this data give you a competitive advantage vis-à-vis other ad-serving companies?

These factors limit the ability to attach files to e-mail messages. location of sender recipient's ability to open file size of file type of operating system used