[C-Sharp Programming MCQS ]

झारखंड में आयोजित होने वाली JPSC, JSSC, JET, झारखंड पुलिस भर्ती परीक्षा आदि के लिए उपयोगी सामान्य अध्ययन।

[ C-Sharp Programming MCQS ]

Useful GK for JPSC, JSSC, JET, Jharkhand Police and other exams.

381. Garbage Collector का मुख्य उद्देश्य क्या है?

[A] CPU increase करना

[B] Unused memory free करना

[C] Thread create करना

[D] File handling करना

381. What is the main purpose of Garbage Collector?

[A] Increase CPU

[B] Free unused memory

[C] Create thread

[D] File handling

सही उत्तर: Unused memory free करना

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Free unused memory

Explanation: Important question.

382. Generations (0,1,2) GC में क्यों use होते हैं?

[A] Thread management के लिए

[B] Performance optimization के लिए

[C] Database indexing के लिए

[D] File compression के लिए

382. Why are Generations (0,1,2) used in GC?

[A] Thread management

[B] Performance optimization

[C] Database indexing

[D] File compression

सही उत्तर: Performance optimization के लिए

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Performance optimization

Explanation: Important question.

383. Gen 0 objects किस category में आते हैं?

[A] Long-lived objects

[B] Short-lived objects

[C] Static objects

[D] Database objects

383. What kind of objects are in Gen 0?

[A] Long-lived objects

[B] Short-lived objects

[C] Static objects

[D] Database objects

सही उत्तर: Short-lived objects

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Short-lived objects

Explanation: Important question.

384. LOH (Large Object Heap) कब collect होता है?

[A] हर GC cycle में

[B] Rarely (Gen 2 के साथ)

[C] हर second में

[D] Manual only

384. When is LOH collected?

[A] Every GC cycle

[B] Rarely (with Gen 2)

[C] Every second

[D] Manual only

सही उत्तर: Rarely (Gen 2 के साथ)

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Rarely (with Gen 2)

Explanation: Important question.

385. Weak Reference का उपयोग किसलिए होता है?

[A] Strong memory hold के लिए

[B] Object को GC allow करने के लिए

[C] Thread lock के लिए

[D] Database caching के लिए

385. What is Weak Reference used for?

[A] Strong memory hold

[B] Allow GC to collect object

[C] Thread locking

[D] Database caching

सही उत्तर: Object को GC allow करने के लिए

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Allow GC to collect object

Explanation: Important question.

386. C# में StackOverflowException कब होती है?

[A] Memory full होने पर

[B] Infinite recursion होने पर

[C] File error होने पर

[D] Database error होने पर

386. When does StackOverflowException occur in C#?

[A] When memory is full

[B] When infinite recursion occurs

[C] When file error occurs

[D] When database error occurs

सही उत्तर: Infinite recursion होने पर

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: When infinite recursion occurs

Explanation: Important question.

387. NullReferenceException कब होती है?

[A] Variable initialized होने पर

[B] Null object पर access करने पर

[C] File open होने पर

[D] Thread start होने पर

387. When does NullReferenceException occur?

[A] When variable is initialized

[B] When accessing null object

[C] When file opens

[D] When thread starts

सही उत्तर: Null object पर access करने पर

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: When accessing null object

Explanation: Important question.

388. IndexOutOfRangeException किस कारण से होती है?

[A] Correct index access

[B] Invalid array index access

[C] Thread issue

[D] Memory issue

388. What causes IndexOutOfRangeException?

[A] Correct index access

[B] Invalid array index access

[C] Thread issue

[D] Memory issue

सही उत्तर: Invalid array index access

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Invalid array index access

Explanation: Important question.

389. InvalidCastException कब होती है?

[A] Correct type conversion

[B] Wrong type casting

[C] File read error

[D] Database error

389. When does InvalidCastException occur?

[A] Correct type conversion

[B] Wrong type casting

[C] File read error

[D] Database error

सही उत्तर: Wrong type casting

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Wrong type casting

Explanation: Important question.

390. try-catch का मुख्य उद्देश्य क्या है?

[A] Performance increase करना

[B] Exception handle करना

[C] Memory delete करना

[D] Thread create करना

390. What is the main purpose of try-catch?

[A] Increase performance

[B] Handle exceptions

[C] Delete memory

[D] Create thread

सही उत्तर: Exception handle करना

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Handle exceptions

Explanation: Important question.