[C-Sharp Programming MCQS ]

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[ C-Sharp Programming MCQS ]

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

421. Equals() method का उपयोग क्या करता है?

[A] Memory compare

[B] Object equality check

[C] Thread compare

[D] File compare

421. What does Equals() method do?

[A] Memory compare

[B] Object equality check

[C] Thread compare

[D] File compare

सही उत्तर: Object equality check

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Object equality check

Explanation: Important question.

422. GetHashCode() का उपयोग किसलिए होता है?

[A] Object delete करने के लिए

[B] Hash-based collections में performance के लिए

[C] Thread control के लिए

[D] Memory clear के लिए

422. What is GetHashCode() used for?

[A] Delete object

[B] Performance in hash-based collections

[C] Control thread

[D] Clear memory

सही उत्तर: Hash-based collections में performance के लिए

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Performance in hash-based collections

Explanation: Important question.

423. ToString() method का default behavior क्या है?

[A] Object memory address return करता है

[B] Class name return करता है

[C] Null return करता है

[D] Exception throw करता है

423. What is default behavior of ToString() method?

[A] Returns memory address

[B] Returns class name

[C] Returns null

[D] Throws exception

सही उत्तर: Class name return करता है

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Returns class name

Explanation: Important question.

424. finalize और destructor का relation क्या है?

[A] Same हैं

[B] Destructor internally finalize call करता है

[C] Finalize static होता है

[D] Destructor unmanaged नहीं होता

424. What is the relation between finalize and destructor?

[A] Both are same

[B] Destructor internally calls finalize

[C] Finalize is static

[D] Destructor is not unmanaged

सही उत्तर: Destructor internally finalize call करता है

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Destructor internally calls finalize

Explanation: Important question.

425. C# में interface को implement कैसे किया जाता है?

[A] extends keyword से

[B] implements keyword से

[C] Colon symbol से

[D] using keyword से

425. How is an interface implemented in C#?

[A] Using extends keyword

[B] Using implements keyword

[C] Using colon symbol

[D] Using using keyword

सही उत्तर: Colon symbol से

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Using colon symbol

Explanation: Important question.

426. Multiple interfaces implement करने के लिए क्या use होता है?

[A] Single inheritance

[B] Comma separated interfaces

[C] Only abstract class

[D] Delegate

426. How are multiple interfaces implemented?

[A] Single inheritance

[B] Comma separated interfaces

[C] Only abstract class

[D] Delegate

सही उत्तर: Comma separated interfaces

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Comma separated interfaces

Explanation: Important question.

427. Abstract method कहाँ declare किया जाता है?

[A] Interface में

[B] Abstract class में

[C] Struct में

[D] Static class में

427. Where is an abstract method declared?

[A] Interface

[B] Abstract class

[C] Struct

[D] Static class

सही उत्तर: Abstract class में

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Abstract class

Explanation: Important question.

428. Virtual method का मुख्य उपयोग क्या है?

[A] Method delete करना

[B] Method overriding allow करना

[C] Thread create करना

[D] Memory clear करना

428. What is the main use of virtual method?

[A] Delete method

[B] Allow method overriding

[C] Create thread

[D] Clear memory

सही उत्तर: Method overriding allow करना

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Allow method overriding

Explanation: Important question.

429. Override keyword कब use किया जाता है?

[A] New method बनाने के लिए

[B] Base class method redefine करने के लिए

[C] Thread stop करने के लिए

[D] Memory free करने के लिए

429. When is override keyword used?

[A] Create new method

[B] Redefine base class method

[C] Stop thread

[D] Free memory

सही उत्तर: Base class method redefine करने के लिए

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Redefine base class method

Explanation: Important question.

430. new keyword method hiding में क्या करता है?

[A] Base method delete करता है

[B] Method hide करता है

[C] Thread create करता है

[D] Memory increase करता है

430. What does new keyword do in method hiding?

[A] Deletes base method

[B] Hides method

[C] Creates thread

[D] Increases memory

सही उत्तर: Method hide करता है

व्याख्या: महत्वपूर्ण प्रश्न।

Correct Answer: Hides method

Explanation: Important question.