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
Answer: (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
Answer: (b) System call
Q3. System call is also known as
(a) Monitor call
(b) CPU call
(c) Execution call
(d) Process call
Answer: (a) Monitor 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
Answer: (a) Main memory
Q5. Main memory commonly is implemented in a semiconductor technology called
(a) MRAM
(b) SDRAM
(c) DRAM
(d) PRAM
Answer: (c) DRAM
Q6. Jobs are kept initially on the disk in the
(a) Schedule pool
(b) Process pool
(c) System pool
(d) Job pool
Answer: (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
Answer: (c) user, kernel
Q8. Which mode bit is used to indicate kernel mode
(a) 0
(b) 1
(c) 2
(d) 3
Answer: (a) 0
Q9. Which mode bit is used to indicate user mode
(a) -1
(b) 1
(c) 3
(d) 5
Answer: (b) 1
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
Answer: (a) LPVOID Buffer
Q11. The number of bytes read during the last read is known as _______ bytesRead
(a) HANDLE
(b) DWORD
(c) LPDWORD
(d) LPOVERLAPPED
Answer: (c) LPDWORD
Q12. A control card is a ________ system concept
(a) time-sharing
(b) network
(c) batch
(d) distributed
Answer: (c) batch
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
Answer: (b) message passing,shared memory
Q14. When the instructions are being executed, this state is known as
(a) New
(b) Ready
(c) Waiting
(d) Running
Answer: (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
Answer: (c) Device queue
Practice Test Exam