Ensure that the system will never enter a deadlock state

Deadlock detection and recovery is Allow the system to enter a deadlock state and then recover

Requires that the system has some additional a priori information available

If a system is in safe state there are deadlocks

If a system is in unsafe state there must be deadlock

Multiple instances of a resource type

in banker’s algorithm n represents

in banker’s algorithm m represents

is responsible for moving the data between the peripheral devices that it controls and its local buffer storage

refers to the use of high-speed memory to hold a copy of recently-accessed data

in the Instruction Execution Cycle the Decode step may store the execution result back in memory

Controls the hardware and coordinates its use among the application programs

The.............must be executed when the interrupt occurs

in a .........system , computers share storage and are closely linked via a LAN.

in Dual-Mode Operation Privileged instructions can execute only in

Only the operating system can execute

If the running job needs to wait for an I/O operation, the OS picks another job to start execution