
SO Lab 07 Recap
Authored by Anonymous Anonymous
Computers
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who said the following words: "Totul in viata se plateste"
Nicolae Tapus
Florin Salam
Razvan Rughinis
Donald Trump
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is better? To be born good, or to ...
overcome your evil nature through great effort?
be born bad?
not be born at all?
become good as you live?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A piece of code that must be executed only by one thread at a time, to ensure correctness, is called
a critical section
a serial code
a critical code
a serial section
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following are synchronisation methods?
mutexes
semaphores
timers
barriers
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
When does copy-on-write happen?
On context switch
When a child process performs a write
On fork()
On exec()
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ten threads perform "a++", with a=0, without synchronization. What is the value of a after the operations?
10
3
7
hard to say
7.
OPEN ENDED QUESTION
3 mins • 5 pts
How can we ensure that, for the last question's situation, the result is correct? (describe what and how you use, not just "by synchronising the threads")
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