An operating system that provides no support for threads will block the entire process if one of the (user level) threads in that process makes a blocking system call.

Suppose a circle’s radius is measured to be 3, with an error of at most 0.5. What is the greatest possible error in the circumference measurement of the circle?

Consider that we have two setups for hierarchical memory with the following miss rates and hit times: Memory 1   Memory 2 Hardware Miss Rate Hit Time   Hardware Miss Rate Hit Time L1 Cache 0.07 8ns   L1 Cache 0.1 3ns L2 Cache 0.22 12ns   L2 Cache 0.38 10ns L3 Cache 0.31 30ns   L3 Cache 0.4 19ns Main Memory 0 70ns   Main Memory 0 56ns Compute the AAT (average access time) for each setup. Show your work in the textbox below to receive partial credits.

Find if

Consider a page-fault that occurs in a 5-stage pipeline during instruction fetch, what should be the order of the tasks below to allow for the hardware to re-start the instructions? Please use a single space to separate the options (e.g. 1 2 3 4) with no leading or trailing whitespaces. Points may be deducted for misformatted responses. Options: Allow pending instructions to complete Drain the pipeline and start sending NOPs from IF Resume the pipeline from the faulting instruction Service the page fault

Choose the best words to complete the sentences. Use the information in parentheses to help you. ************************************************* Your cell phone in Japan, but I’m not positive. (guessing)

Choose the best words to complete the sentences.  ************************************************* If the polio vaccine had existed in the 1940s, my grandmother the disease.

Complete the announcement with the correct form of the words. ******************************************** Grassy Farm to Go Green! Here at Grassy Farm, we believe that is a threat to the whole planet. Our goal is to have the smallest possible within three years. Therefore, we plan to reduce our by 40% a year. We will limit the of the meat we sell to a few items, such as chicken. Moreover, we plan to restrict the companies in our to local companies within a 50-mile radius of our farm. We hope you will support us in our efforts.

Choose the best words to complete the sentences. Use the information in parentheses to help you. ************************************************* They  the apples at our neighbor’s farm. (guessing)

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