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Sticky Note
What is a mutex lock primarily used for in programming?
  1. To encrypt data
  2. To prevent multiple threads from accessing shared resources simultaneously
  3. To speed up execution
  4. To handle recursion
Explanation
  • A mutex (mutual exclusion) lock ensures that only one thread can access a shared resource at a time.
  • It prevents race conditions, where multiple threads modify data simultaneously.
  • Threads must acquire the mutex before using the resource and release it afterward.
  • Mutexes are commonly used in multithreading and concurrent programming.

  • Proper use of mutexes ensures data consistency and program stability.

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    What is the output of the following Python code? (x + y) = 5 + 3 print(x + y)
    1. 5
    2. 8
    3. SyntaxError
    4. None of these
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    حروف، اعداد اور خاص علامات پر مشتمل پاس ورڈ زیادہ مضبوط کیوں سمجھا جاتا ہے؟
    1. It reduces password length
    2. It increases possible combinations
    3. It is easier to remember
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    مندرجہ ذیل میں سے ڈیٹا پروسیسنگ کی درست ترتیب کون سی ہے؟
    1. Input → Processing → Output → Storage
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    4. None of these
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    What is the shortcut key for double underline ?
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    1. Ctrl + Shift + D
    2. Ctrl + Ctrl + Shift + B
    3. Ctrl + Ctrl + Shift + U
    4. None of these
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    سنٹرل پروسیسنگ یونٹ کس کام کا ذمہ دار ہے؟
    1. Processing instructions and calculations
    2. Displaying images and associated text
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