Question
In a multithreaded environment, which of the following
synchronization mechanisms is used to prevent race conditions?ÂSolution
A semaphore is a synchronization mechanism that is crucial for controlling access to shared resources in a multithreaded environment. It serves as a signaling mechanism that can be used to prevent race conditions, which occur when multiple threads attempt to modify shared data simultaneously, leading to unpredictable outcomes. Semaphores maintain a count of available resources and ensure that only a certain number of threads can access the critical section of code at any given time. When a thread wants to enter a critical section, it checks the semaphore's value; if it is greater than zero, the thread decrements it and proceeds; otherwise, it is blocked until the semaphore is released by another thread. This prevents multiple threads from executing critical sections concurrently, thereby eliminating race conditions and ensuring data consistency. Option B (Fork) - Fork is used to create new processes, not for synchronizing access to shared resources. Option C (Signal) - Signals are used for inter-process communication but do not provide the same level of resource control as semaphores. Option D (Context Switch) - Context switching refers to the operating system's ability to switch between processes and threads, which does not inherently prevent race conditions. Option E (Stack) - A stack is a data structure and does not serve any synchronization purpose in multithreading.
Select the option that is related to the fifth term in the same way as the second term is related to the first term and fourth term is related to third ...
Select the option that is related to the fourth word in the same way the second word is related to the first word.
REST : TBUQ:: VALUES:?
If O = 15 and TOUR = 53, then SOFTER =
Select the option that is related to fourth letter-cluster in the same way second letter cluster is related to first letter-cluster.
Eagle: Bir...
If 74 × 35 = 3, 35 × 13 = 4, 54 × 42 = 3, then 78 × 44 =?Â
Identify the number, which when added to itself 19 times gives 920.
From among the given alternatives select the one in which the set of numbers is most like the set of numbers given in the question.
Given set:...
Complete the analogy:
Bald Eagle : USA :: Maple Leaf : ?Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Choose the figure that best represents the relationship among the classes given below.
Company, School, Culture, Health