Operating System Interview Questions

Q1. ___________ acts as an intermediary between the computer user and the computer hardware
(a) Software
(b) Mainframe
(c) ROM
(d) Operating System

Q2. Software may trigger an interrupt by executing a special operation called a
(a) Recovery call
(b) System call
(c) Process call
(d) Package call

Q3. System call is also known as
(a) Monitor call
(b) CPU call
(c) Execution call
(d) Process call

Q4. General-purpose computers run most of their programs from rewritable memory, called
(a) Main memory
(b) Secondary memory
(c) Peripheral memory
(d) Primary memory

Q5. Main memory commonly is implemented in a semiconductor technology called
(a) MRAM
(c) DRAM
(d) PRAM

Q6. Jobs are kept initially on the disk in the
(a) Schedule pool
(b) Process pool
(c) System pool
(d) Job pool

Q7. There are two types of separate mode of operation in OS, ______ mode and ________ mode
(a) process, kernel
(b) system, process
(c) user, kernel
(d) user, system

Q8. Which mode bit is used to indicate kernel mode
(a) 0
(b) 1
(c) 2
(d) 3

Q9. Which mode bit is used to indicate user mode
(a) -1
(b) 1
(c) 3
(d) 5

Q10. A buffer where the data will be read into and written from is
(a) LPVOID Buffer
(b) LPOut Buffer
(c) LPIN Buffer
(d) LBLOCK Buffer

Q11. The number of bytes read during the last read is known as _______ bytesRead

Q12. A control card is a ________ system concept
(a) time-sharing
(b) network
(c) batch
(d) distributed

Q13. There are two types of interproccess communication, _________ and __________
(a) message receiving, dedicated memory
(b) message passing,shared memory
(c) information sharing, primary memory
(d) message passing, dedicated memory

Q14. When the instructions are being executed, this state is known as
(a) New
(b) Ready
(c) Waiting
(d) Running

Q15. The list of processes waiting for a particular I/0 device is called a
(a) Device list
(b) Device pool
(c) Device queue
(d) Device state

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