If the directory now gets a request for the same cache block from processor P1, what could this mean? What should the directory controller do? (Such cases are called "race conditions" and are the reason why coherence protocols are so hard to design and verify.)

*insert ribbon > table drop-down menu* would allow you to insert a quick table

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By default, powerpoint opens in normal view, displaying the thumbnails, notes and slide view. if you prefer, however, you can specify that powerpoint open in a different view, such as slide sorter view, slide show view, notes page view, and variations on normal view.