Operating System Set 21
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This set of Operating System (OS) Multiple Choice Questions & Answers (MCQs) focuses on Operating System Set 21
Q1 | A block device transfers
- bytes one by one
- block of bytes as a unit
- with unpredictable response times
- none of the mentioned
Q2 | What is a dedicated device?
- opposite to a sharable device
- same as a sharable device
- can be used concurrently by several processes
- none of the mentioned
Q3 | A keyboard is an example of a device that is accessed through a interface.
- block stream
- set of blocks
- character stream
- none of the mentioned
Q4 | In polling
- busy – wait cycles wait for i/o from device
- interrupt handler receives interrupts
- interrupt-request line is triggered by i/o device
- all of the mentioned
Q5 | A non blocking system call
- halts the execution of the application for an extended time
- does not halt the execution of the application
- does not block the interrupts
- none of the mentioned
Q6 | An asynchronous call
- returns immediately, without waiting for the i/o to complete
- does not return immediately and waits for the i/o to complete
- consumes a lot of time
- is too slow
Q7 | Buffering is done to
- cope with device speed mismatch
- cope with device transfer size mismatch
- maintain copy semantics
- all of the mentioned
Q8 | Caching is spooling.
- same as
- not the same as
- all of the mentioned
- none of the mentioned
Q9 | Caching
- holds a copy of the data
- is fast memory
- holds the only copy of the data
- holds output for a device
Q10 | Spooling
- holds a copy of the data
- is fast memory
- holds the only copy of the data
- holds output for a device
Q11 | The keeps state information about the use of I/O components.
- cpu
- os
- kernel
- shell
Q12 | The kernel data structures include
- process table
- open file table
- close file table
- all of the mentioned
Q13 | If the number of cycles spent busy – waiting is not excessive, then
- interrupt driven i/o is more efficient than programmed i/o
- programmed i/o is more efficient than interrupt driven i/o
- both programmed and interrupt driven i/o are equally efficient
- none of the mentioned
Q14 | A is a full duplex connection between a device driver and a user level process.
- bus
- i/o operation
- stream
- flow
Q15 | The first linux kernel which supports the SMP hardware?
- linux 0.1
- linux 1.0
- linux 1.2
- linux 2.0
Q16 | Which one of the following linux file system does not support journaling feature?
- ext2
- ext3
- ext4
- none of the mentioned
Q17 | Which binary format is supported by linux?
- a.out
- elf
- both a.out and elf
- none of the mentioned
Q18 | Which one of the following bootloader is not used by linux?
- grub
- lilo
- ntldr
- none of the mentioned
Q19 | The first process launched by the linux kernel is
- init process
- zombie process
- batch process
- boot process
Q20 | Which desktop environment is not used in any linux distribution?
- gnome
- kde
- unity
- none of the mentioned
Q21 | Standard set of functions through which interacts with kernel is defined by
- system libraries
- kernel code
- compilers
- utility programs
Q22 | What is Linux?
- single user, single tasking
- single user, multitasking
- multi user, single tasking
- multi user, multitasking
Q23 | Which one of the following is not a linux distribution?
- debian
- gentoo
- open suse
- multics
Q24 | Which one of the following is not shared by threads?
- program counter
- stack
- both program counter and stack
- none of the mentioned
Q25 | A process can be
- single threaded
- multithreaded
- both single threaded and multithreaded
- none of the mentioned