What is a binary semaphore?

Correct Answer: SCSI - Small computer systems interface is a type of interface used for computer components such as hard drives, optical drives, scanners and tape drives It is a competing technology to standard IDE (Integrated Drive Electronics)

Correct Answer: Distributed systems work in a network They can share the network resources,communicate with each other

Correct Answer: Virtual memory is hardware technique where the system appears to have more memory that it actually does This is done by time-sharing, the physical memory and storage parts of the memory one disk when they are not actively being used

Correct Answer: DDks are device driver kits, which are equivalent to SDKs for writing device drivers Windows NT includes DDks

Correct Answer: - Network redirector/ Server - Cache manager - File systems - Network driver - Device driver

Correct Answer: When a process enters the system it is placed in the job queue

Correct Answer: The processes that are residing in the main memory and are ready and waiting to execute are kept on a list called the ready queue

Correct Answer: Program execution I/O operations File system manipulation Communication Error detection Resource allocation Accounting Protection

Correct Answer: Scheduling is the activity of the deciding when process will receive the resources they request FCS ---> FCSFS stands for First Come First Served In FCFS the job that has been waiting the longest is served next Round Robin Scheduling--->Round Robin scheduling is a scheduling method where each process gets a small quantity of time to run and then it is preempted and the next process gets to run This is called time-sharing and gives the effect of all the processes running at the same time Shortest Job First ---> The Shortest job First scheduling algorithm is a nonpreemptive scheduling algorithm that chooses the job that will execute the shortest amount of time Priority Scheduling--->Priority scheduling is a scheduling method where at all times the highest priority process is assigned the resource

Correct Answer: A list of processes waiting for a particular I/O device is called device queue