[Cyber Security MCQS ]

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

[ Cyber Security MCQS ]

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

421. Phishing attack क्या करता है?

[A] User data चोरी करता है

[B] System update करता है

[C] Network fast करता है

[D] File backup करता है

421. What does Phishing attack do?

[A] Steals user data

[B] Updates system

[C] Speeds network

[D] Backups files

सही उत्तर: User data चोरी करता है

व्याख्या: Phishing fake links use करता है।

Correct Answer: Steals user data

Explanation: It tricks users.

422. DDoS attack का मुख्य उद्देश्य क्या है?

[A] System को down करना

[B] System को upgrade करना

[C] File delete करना

[D] Game खेलना

422. What is the main purpose of DDoS attack?

[A] Bring system down

[B] Upgrade system

[C] Delete files

[D] Play games

सही उत्तर: System को down करना

व्याख्या: DDoS server overload करता है।

Correct Answer: Bring system down

Explanation: It floods traffic.

423. कौन सा attack fake identity बनाकर system में घुसता है?

[A] IP Spoofing

[B] Backup

[C] Compression

[D] Formatting

423. Which attack enters system using fake identity?

[A] IP Spoofing

[B] Backup

[C] Compression

[D] Formatting

सही उत्तर: IP Spoofing

व्याख्या: IP spoofing में fake IP use होता है।

Correct Answer: IP Spoofing

Explanation: It hides real identity.

424. DNS का मुख्य कार्य क्या है?

[A] Domain name को IP में convert करना

[B] File delete करना

[C] Game खेलना

[D] Data encrypt करना

424. What is the main function of DNS?

[A] Convert domain name to IP

[B] Delete files

[C] Play games

[D] Encrypt data

सही उत्तर: Domain name को IP में convert करना

व्याख्या: DNS internet addressing system है।

Correct Answer: Convert domain name to IP

Explanation: DNS resolves addresses.

425. Packet Sniffing का उपयोग क्या है?

[A] Network traffic monitor करना

[B] Game खेलना

[C] File delete करना

[D] System update करना

425. What is Packet Sniffing used for?

[A] Monitor network traffic

[B] Play games

[C] Delete files

[D] Update system

सही उत्तर: Network traffic monitor करना

व्याख्या: Sniffing packets capture करता है।

Correct Answer: Monitor network traffic

Explanation: It captures data packets.

426. Firewall का कार्य क्या है?

[A] Unauthorized access रोकना

[B] Game खेलना

[C] File delete करना

[D] Music चलाना

426. What is the function of Firewall?

[A] Block unauthorized access

[B] Play games

[C] Delete files

[D] Play music

सही उत्तर: Unauthorized access रोकना

व्याख्या: Firewall traffic control करता है।

Correct Answer: Block unauthorized access

Explanation: Firewall protects systems.

427. VPN का उपयोग क्यों किया जाता है?

[A] Secure connection बनाने के लिए

[B] Game खेलने के लिए

[C] File delete करने के लिए

[D] System crash करने के लिए

427. Why is VPN used?

[A] Secure connection

[B] Gaming

[C] File deletion

[D] System crash

सही उत्तर: Secure connection बनाने के लिए

व्याख्या: VPN encrypted tunnel बनाता है।

Correct Answer: Secure connection

Explanation: VPN hides identity.

428. Phishing attack क्या है?

[A] Fake email से data चोरी करना

[B] System update करना

[C] Game खेलना

[D] File backup करना

428. What is Phishing attack?

[A] Steal data via fake emails

[B] System update

[C] Play games

[D] Backup files

सही उत्तर: Fake email से data चोरी करना

व्याख्या: Phishing fake communication use करता है।

Correct Answer: Steal data via fake emails

Explanation: It tricks users.

429. Ransomware attack में क्या होता है?

[A] Data encrypt करके ransom मांगा जाता है

[B] Data delete होता है

[C] System upgrade होता है

[D] Game चलता है

429. What happens in Ransomware attack?

[A] Data encrypted and ransom demanded

[B] Data deleted

[C] System upgraded

[D] Game runs

सही उत्तर: Data encrypt करके ransom मांगा जाता है

व्याख्या: Ransomware files lock करता है।

Correct Answer: Data encrypted and ransom demanded

Explanation: It locks files.

430. Two-Factor Authentication का उद्देश्य क्या है?

[A] Extra security देना

[B] Network slow करना

[C] Game खेलना

[D] File delete करना

430. What is the purpose of Two-Factor Authentication?

[A] Provide extra security

[B] Slow network

[C] Play games

[D] Delete files

सही उत्तर: Extra security देना

व्याख्या: 2FA additional layer देता है।

Correct Answer: Provide extra security

Explanation: It adds verification layer.