[Operating System MCQS ]

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

[ Operating System MCQS ]

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

261. Worm behavior क्या है?

[A] true false

[B] true true

[C] false true

[D] false false

261. Worm statements are

[A] true false

[B] true true

[C] false true

[D] false false

सही उत्तर: true true

व्याख्या: worm self copy और execute करता है।

Correct Answer: true true

Explanation: Worm replicates and executes.

262. Virus क्या करता है?

[A] infect programs

[B] only delete

[C] only store

[D] only run

262. Virus is

[A] infect programs

[B] delete only

[C] store only

[D] run only

सही उत्तर: virus

व्याख्या: virus programs को infect करता है।

Correct Answer: virus

Explanation: Infects other programs.

263. DoS attack में कौन उपयोग होता है?

[A] worm

[B] zombie

[C] virus

[D] trojan

263. Used in denial of service attacks

[A] worm

[B] zombie

[C] virus

[D] trojan horse

सही उत्तर: zombie

व्याख्या: infected system attack करता है।

Correct Answer: zombie

Explanation: Used for DoS attacks.

264. Virus execution phases सही क्रम क्या है?

[A] dormant;propagation;trigger;execution

[B] propagation;execution;dormant;trigger

[C] propagation;dormant;trigger;execution

[D] all

264. Correct order of virus phases

[A] dormant;propagation;trigger;execution

[B] propagation;execution;dormant;trigger

[C] propagation;dormant;trigger;execution

[D] all

सही उत्तर: dormant;propagation;trigger;execution

व्याख्या: यह सही order है।

Correct Answer: dormant;propagation;trigger;execution

Explanation: Correct sequence.

265. Executable file infect करने वाला virus कौन है?

[A] stealth

[B] polymorphic

[C] parasitic

[D] macro

265. Virus that infects executable files

[A] stealth

[B] polymorphic

[C] parasitic

[D] macro

सही उत्तर: parasitic virus

व्याख्या: executable files को infect करता है।

Correct Answer: parasitic virus

Explanation: Infects executables.

266. Antivirus से hide करने वाला virus?

[A] stealth

[B] polymorphic

[C] parasitic

[D] macro

266. Virus that hides from antivirus

[A] stealth

[B] polymorphic

[C] parasitic

[D] macro

सही उत्तर: stealth virus

व्याख्या: detect नहीं होता।

Correct Answer: stealth virus

Explanation: Hidden virus.

267. Different bit pattern वाला virus?

[A] boot sector

[B] polymorphic

[C] parasitic

[D] macro

267. Virus with different bit patterns

[A] boot sector

[B] polymorphic

[C] parasitic

[D] macro

सही उत्तर: polymorphic virus

व्याख्या: copies different pattern में होती है।

Correct Answer: polymorphic virus

Explanation: Changes structure.

268. Mutation engine क्या करता है?

[A] encrypt key

[B] delete file

[C] scan system

[D] run program

268. Mutation engine does

[A] encrypt key

[B] delete file

[C] scan system

[D] run program

सही उत्तर: mutation engine

व्याख्या: virus को encrypt करता है।

Correct Answer: mutation engine

Explanation: Encrypts virus.

269. Macro virus के बारे में क्या सही है?

[A] true true

[B] false false

[C] true false

[D] false true

269. Macro virus statements

[A] true true

[B] false false

[C] true false

[D] false true

सही उत्तर: true true

व्याख्या: platform independent और documents infect करता है।

Correct Answer: true true

Explanation: Both correct.

270. Auto macros कौन से हैं?

[A] auto execute

[B] auto macro

[C] command macro

[D] all

270. Auto executing macros are

[A] auto execute

[B] auto macro

[C] command macro

[D] all

सही उत्तर: all

व्याख्या: Word में सभी auto macros होते हैं।

Correct Answer: all

Explanation: All types included.