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265. What is the method of handling deadlocks?

Use a protocol to ensure that the system will never enter a deadlock state
Allow the system to enter the deadlock state and then recover
Pretend that deadlocks never occur in the system
All of the Above
✅ The correct answer is option D.

276. The FIFO algorithm

executes first the job that last entered the queue
executes first the job that first entered the queue
execute first the job that has been in the queue the longest
executes first the job with the least processor needs
✅ The correct answer is option B.

280. The advantage of a command processor running only built-in commands is:

flexibility to the users in running lists of commands by simply collecting them in named batch command files
the command set being common across different hardware configurations
users can create system programs and run them as commands
the processing is much faster than would other-wise be the case when user defined commands are used
✅ The correct answer is option B.
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