Operating System (OS)
The advantage of a command processor running only built-in commands is:

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 command set being common across different hardware configurations
None of these
flexibility to the users in running lists of commands by simply collecting them in named batch command files

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine after completion of the current instruction
branches off to the interrupt service routine immediately
None of these
halts for a predetermined time

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

None of these
suspending some of the processes when the CPU load is high
swapping a process to the disk
bring processes from the disk to the main memory
assigning ready process to the CPU

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