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.)

4. a1. vince owns a television repair shop that is insured undera commercial package policy. the policy includes thebuilding and personal property coverage form and thecauses-of-loss broad form. the declarations page indicatesthat coverage applies to both the building and the namedinsured's business property. explain whether or not thefollowing losses would be covered under his policy.a. a fire occurs on the premises, and the building isbadly damaged.b. a burglar steals some money and securities from anunlocked safe.c. a business computer is damaged by vandals whobreak into the shop after business hours.d. a tornado touches down near the store. several tel-evision sets of customers in the shop for repair aredamaged in the storm.til