Operating Systems - Process vs Thread - Key Differences
Which of the following statements about processes and threads is INCORRECT?
Which of the following statements about processes and threads is INCORRECT?
medium🐞 Bug Identification Q14 of Q15
Step-by-Step Solution
Step 1: Verify thread memory sharing
Threads share memory within a process, so Threads within the same process share the same memory space is correct.Step 2: Verify process isolation
Processes have separate memory spaces, so Processes have separate memory spaces and do not share resources by default is correct.Step 3: Compare context switching costs
Thread context switching is lighter and faster than process switching, so Context switching between threads is more expensive than between processes is incorrect.Step 4: Confirm communication efficiency
Threads communicate efficiently via shared memory, so Threads can communicate more efficiently than processes due to shared memory is correct.Final Answer:
Option B -> Option BQuick Check:
Thread context switches are cheaper than process context switches [OK]
Quick Trick: Thread switches cheaper than process switches [OK]
Common Mistakes:
MISTAKES- Assuming process context switches are cheaper
- Confusing memory sharing between threads and processes
- Believing threads cannot communicate efficiently
Trap Explanation:
PITFALL- Option C is a common misconception; candidates often overestimate thread context switch cost.
Interviewer Note:
CONTEXT- Tests ability to spot subtle misconceptions about process and thread behavior.
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