[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.

281. Denial of Service (DoS) attack का मुख्य उद्देश्य क्या है?

[A] System या service को unavailable बनाना

[B] डेटा एन्क्रिप्ट करना

[C] फाइल कॉपी करना

[D] गेम खेलना

281. What is the main purpose of a DoS attack?

[A] Make system or service unavailable

[B] Encrypt data

[C] Copy files

[D] Play games

सही उत्तर: System या service को unavailable बनाना

व्याख्या: DoS attack system resources को exhaust करता है।

Correct Answer: Make system or service unavailable

Explanation: DoS attacks overload systems.

282. Distributed Denial of Service (DDoS) क्या होता है?

[A] Multiple systems से किया गया DoS attack

[B] Single computer attack

[C] Antivirus software

[D] Firewall system

282. What is a DDoS attack?

[A] DoS attack from multiple systems

[B] Single computer attack

[C] Antivirus software

[D] Firewall system

सही उत्तर: Multiple systems से किया गया DoS attack

व्याख्या: DDoS multiple devices का use करता है।

Correct Answer: DoS attack from multiple systems

Explanation: DDoS uses botnets for attack.

283. Packet Sniffing क्या है?

[A] Network packets को intercept करना

[B] फाइल डिलीट करना

[C] गेम खेलना

[D] नेटवर्क बंद करना

283. What is Packet Sniffing?

[A] Intercepting network packets

[B] Deleting files

[C] Playing games

[D] Stopping network

सही उत्तर: Network packets को intercept करना

व्याख्या: Sniffing data capture करने की technique है।

Correct Answer: Intercepting network packets

Explanation: It monitors network traffic.

284. IP Spoofing क्या है?

[A] Fake IP address का उपयोग करना

[B] Firewall बनाना

[C] VPN चलाना

[D] Encryption करना

284. What is IP Spoofing?

[A] Using fake IP address

[B] Creating firewall

[C] Running VPN

[D] Encrypting data

सही उत्तर: Fake IP address का उपयोग करना

व्याख्या: Spoofing identity hide करने की technique है।

Correct Answer: Using fake IP address

Explanation: IP spoofing hides attacker identity.

285. MAC Spoofing क्या होता है?

[A] MAC address को fake करना

[B] नेटवर्क बंद करना

[C] फाइल डिलीट करना

[D] गेम खेलना

285. What is MAC Spoofing?

[A] Faking MAC address

[B] Stopping network

[C] Deleting files

[D] Playing games

सही उत्तर: MAC address को fake करना

व्याख्या: MAC spoofing network access bypass करता है।

Correct Answer: Faking MAC address

Explanation: It is used to bypass network filters.

286. DNS Spoofing क्या है?

[A] Fake DNS responses देना

[B] Firewall बनाना

[C] VPN चलाना

[D] Encryption करना

286. What is DNS Spoofing?

[A] Fake DNS responses

[B] Firewall creation

[C] VPN usage

[D] Encryption

सही उत्तर: Fake DNS responses देना

व्याख्या: DNS spoofing users को fake websites पर ले जाता है।

Correct Answer: Fake DNS responses

Explanation: It redirects users to malicious sites.

287. Pharming attack क्या है?

[A] Website traffic को malicious site पर redirect करना

[B] नेटवर्क बंद करना

[C] फाइल डिलीट करना

[D] गेम खेलना

287. What is a Pharming attack?

[A] Redirecting users to fake websites

[B] Stopping network

[C] Deleting files

[D] Playing games

सही उत्तर: Website traffic को malicious site पर redirect करना

व्याख्या: Pharming DNS level attack होता है।

Correct Answer: Redirecting users to fake websites

Explanation: Pharming manipulates DNS settings.

288. Social Engineering का मुख्य लक्ष्य क्या है?

[A] Human psychology exploit करना

[B] Software update करना

[C] Network speed बढ़ाना

[D] Hardware repair करना

288. What is the main goal of Social Engineering?

[A] Exploit human psychology

[B] Update software

[C] Increase network speed

[D] Repair hardware

सही उत्तर: Human psychology exploit करना

व्याख्या: Attackers users को manipulate करते हैं।

Correct Answer: Exploit human psychology

Explanation: It targets human behavior.

289. Phishing और Spear Phishing में अंतर क्या है?

[A] Spear phishing targeted होता है

[B] दोनों same हैं

[C] Phishing offline होता है

[D] Spear phishing hardware attack है

289. What is the difference between Phishing and Spear Phishing?

[A] Spear phishing is targeted

[B] Both are same

[C] Phishing is offline

[D] Spear phishing is hardware attack

सही उत्तर: Spear phishing targeted होता है

व्याख्या: Spear phishing specific user को target करता है।

Correct Answer: Spear phishing is targeted

Explanation: It focuses on specific victims.

290. Cyber Security में Encryption का उपयोग क्यों होता है?

[A] Data को secure करने के लिए

[B] Network बंद करने के लिए

[C] File delete करने के लिए

[D] Game खेलने के लिए

290. Why is Encryption used in Cyber Security?

[A] To secure data

[B] To stop network

[C] To delete files

[D] To play games

सही उत्तर: Data को secure करने के लिए

व्याख्या: Encryption data को unreadable बनाता है।

Correct Answer: To secure data

Explanation: Encryption protects confidentiality.