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OS The Linux System
What is the reason for using the LFU page replacement algorithm?
an actively used page should have a large reference count
a less used page has more chances to be used again
it is extremely efficient and optimal
all of the mentioned
Author:
rikazzz
Comment
OS The Linux System
A thread is also called ___________
Light Weight Process(LWP)
Heavy Weight Process(HWP)
Process
None of the mentioned
Author:
rikazzz
Comment
OS The Linux System
In the Many to One model, multiple threads are unable to run in parallel on multiprocessors because of ___________
only one thread can access the kernel at a time
many user threads have access to just one kernel thread
there is only one kernel thread
none of the mentioned
Author:
rikazzz
Comment
OS The Linux System
A process is thrashing if ____________
it is spending more time paging than executing
it is spending less time paging than executing
page fault occurs
swapping can not take place
Author:
rikazzz
Comment
OS The Linux System
Cancelling a thread asynchronously ____________
frees all the resources properly
may not free each resource
spoils the process execution
none of the mentioned
Author:
rikazzz
Comment
OS The Linux System
Thrashing _______ the CPU utilization.
increases
keeps constant
decreases
none of the mentioned
Author:
rikazzz
Comment
OS The Linux System
When using counters to implement LRU, we replace the page with the ____________
smallest time value
largest time value
greatest size
none of the mentioned
Whenever a reference to a page is made, the contents of the clock register are copied into the time-of-use field in the page-table entry for that page. In this way, we always have the time of the last reference to each page.
Author:
rikazzz
Comment
OS The Linux System
Locality of reference implies that the page reference being made by a process ____________
will always be to the page used in the previous page reference
is likely to be one of the pages used in the last few page references
will always be one of the pages existing in memory
will always lead to page faults
Author:
rikazzz
Comment
OS The Linux System
Linux uses a time-sharing algorithm ___________
to pair preemptive scheduling between multiple processes
for tasks where absolute priorities are more important than fairness
all of the mentioned
none of the mentioned
Author:
rikazzz
Comment
OS The Linux System
Increasing the RAM of a computer typically improves performance because ____________
Virtual memory increases
Larger RAMs are faster
Fewer page faults occur
None of the mentioned
Author:
rikazzz
Comment
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