SO Lab 07 Recap

Who said the following words: "Totul in viata se plateste"

• Nicolae Tapus

• Florin Salam

• Razvan Rughinis

• Donald Trump

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?

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

Which of the following are synchronisation methods?

• mutexes

• semaphores

• timers

• barriers

When does copy-on-write happen?

• On context switch

• When a child process performs a write

• On fork()

• On exec()

Ten threads perform "a++", with a=0, without synchronization. What is the value of a after the operations?

• 10

• 3

• 7

• hard to say

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")

Describe the copy-on-write process