Computer.current Shelf

19.Macros in Microsoft Office documents are often used to deliver: A) Worms B) Keyloggers C) Macro-based malware D) Botnets Answer: C – Macro-based malware 20.What is the first stage of a typical malware attack lifecycle? A) Privilege escalation B) Persistence C) Delivery D) Exfiltration Answer: C – Delivery 21.Which of the following is NOT a method of malware delivery? A) USB devices B) Phishing C) Software update D) BIOS password Answer: D – BIOS password 22.What does “polymorphic malware” do? A) Changes its appearance to evade detection B) Deletes itself after use C) Encrypts only the system files D) Disables antivirus software permanently Answer: A – Changes its appearance to evade detection 23.Which one is a preventive measure against ransomware? A) Ignoring updates B) Backing up data regularly C) Clicking unknown links D) Disabling firewalls Answer: B – Backing up data regularly 24.Fileless malware resides in: A) Cloud only B) Hard disk C) RAM D) BIOS Answer: C – RAM 25.Which of the following is used for detecting malware behavior during execution? A) Static analysis B) Sandbox C) Firewall D) Proxy Answer: B – Sandbox 26.Which of these is an example of adware? A) Software displaying unsolicited pop-up ads B) Software stealing passwords C) Software deleting system files D) Software encrypting data Answer: A – Software displaying unsolicited pop-up ads 27.What is the goal of anti-malware software? A) Install malware faster B) Prevent, detect, and remove malware C) Make ads more attractive D) Help hackers connect remotely Answer: B – Prevent, detect, and remove malware 28.Which file extension is most likely to contain macro malware? A) .txt B) .docm C) .mp3 D) .zip Answer: B – .docm 29.Which of the following helps identify known malware by comparing file hashes? A) Behavioral detection B) Signature-based detection C) Anomaly detection D) Heuristics Answer: B – Signature-based detection 30.Which of the following is a sign of malware infection? A) Fast boot time B) No ads in browser C) Unknown processes in task manager D) Updated antivirus Answer: C – Unknown processes in task manager

Computer 🖥️ MCQ ------------------------------- 1. Which of the following best defines a computer virus? A. Malware that encrypts files and demands payment B. Self-replicating code that attaches itself to other programs/files C. A network of compromised machines under a command-and-control server D. Software that monitors user activity for advertising purposes Answer: B. A virus attaches to executable files or documents and replicates when those are run. 2. What differentiates a worm from a virus? A. Worms require user action to spread; viruses spread automatically B. Worms spread across networks by themselves; viruses need a host file C. Worms only target mobile devices; viruses only target desktops D. Worms encrypt data; viruses delete data Answer: B. Worms self-propagate over networks without needing to attach to other files. 3. A Trojan horse is best described as: A. Malware that hides in system firmware B. Malware that disguises itself as legitimate software to trick users C. Self-updating adware D. A hardware-based exploit Answer: B. Trojans appear useful or benign but perform malicious actions once executed. 4. Ransomware primarily does which of the following? A. Mines cryptocurrency using the victim’s CPU B. Encrypts victim’s files and demands payment for decryption C. Exfiltrates credentials for identity theft D. Removes antivirus software from the system Answer: B. Ransomware denies access to data by encryption, then extorts payment. 5. Which type of malware is designed to remain hidden and provide persistent, privileged access to an attacker? A. Adware B. Rootkit C. Spyware D. Logic bomb Answer: B. Rootkits hide processes/objects and help attackers maintain stealthy control, often at kernel level. 6.Which of the following is a type of malware that replicates itself without user intervention? A) Virus B) Worm C) Trojan D) Spyware Answer: B – Worm Explanation: Worms self-replicate and spread without needing user actions. --- 7.A malicious program disguised as a legitimate one is known as a: A) Worm B) Trojan C) Virus D) Bot Answer: B – Trojan Explanation: Trojans hide inside seemingly safe programs. 8.Which malware encrypts files and demands payment to decrypt them? A) Rootkit B) Spyware C) Ransomware D) Worm Answer: C – Ransomware Explanation: Ransomware locks files and asks for a ransom. 9.What is the primary goal of spyware? A) Destroy system files B) Spy on user activities and steal data C) Encrypt user files D) Crash the system Answer: B – Spy on user activities and steal data --- 10.Keyloggers are used to: A) Scan the hard disk B) Record user keystrokes C) Speed up computer performance D) Update antivirus software Answer: B – Record user keystrokes 11.Which malware hides its presence and activity from users and security tools? A) Trojan B) Ransomware C) Rootkit D) Worm Answer: C – Rootkit 12.What is the difference between a virus and a worm? A) Virus is more dangerous B) Worm spreads automatically; a virus needs user action C) Worm damages hardware D) Virus spreads faster Answer: B – Worm spreads automatically; a virus needs user action 13.Which malware allows remote control of infected computers? A) Bot B) Worm C) Adware D) Rootkit Answer: A – Bot 14.A group of compromised computers under a single control is called a: A) Rootkit B) Phishing farm C) Botnet D) Spyzone Answer: C – Botnet 15.Which malware uses legitimate tools like PowerShell for malicious actions? A) Trojan B) Fileless malware C) Worm D) Bot Answer: B – Fileless malware 16.What is a “dropper”? A) An antivirus B) A tool to uninstall malware C) Malware that installs other malware D) Backup software Answer: C – Malware that installs other malware 17.Which of these is a method malware uses to avoid detection? A) Fragmentation B) Signature scanning C) Obfuscation D) Logging Answer: C – Obfuscation 18.Which malware spreads using phishing emails? A) Worm B) Trojan C) Bot D) Rootkit Answer: B – Trojan

------------------------------------- *🎯 Static GK MCQ* ------------------------------------- 16.*What is the main index to measure 'inflation' in India?* भारत में 'मुद्रास्फीति' को मापने का मुख्य सूचकांक क्या है? *Answer: - Consumer Price Index (CPI)/उपभोक्ता मूल्य सूचकांक* *17.Which ruler organized the Third Buddhist Council?* तीसरी बौद्ध परिषद का आयोजन किस शासक ने किया था? *Answer: - Ashoka/अशोक* *18.Which of the following rulers started the religion called 'Ilahi'?* किस शासक ने 'इलाही' नामक धर्म की शुरुआत की थी? *Answer: - Akbar/अकबर* *19.Which is the lowest layer of the Earth's atmosphere?* पृथ्वी के वायुमंडल की सबसे निचली परत कौन-सी है? *Answer: - Troposphere/क्षोभमंडल* *20.Which vitamin is obtained from sunlight?* कौन-सा विटामिन सूर्य की रोशनी से प्राप्त होता है? *Answer: - Vitamin D/विटामिन D* Double Tap ❤️

*करेंट अफेयर्स : 01 अक्टूबर 2025* *(Multiple Choice Q & A)* -------------------------------------- *1.Who was recently reappointed as the Attorney General of India for the next two years by the President?* हाल ही में राष्ट्रपति द्वारा किसको अगले 2 साल के लिए पुनः भारत का महान्यायवादी नियुक्त किया गया है? *Answer: - R. Venkataramani/आर. वेंकटरमणी* *2.Under whose chairmanship the 16th meeting of the Empowered Task Force on Ganga Conservation has been held?* किसकी अध्यक्षता में गंगा संरक्षण पर अधिकार प्राप्त कार्यबल की 16वीं बैठक आयोजित की गई है? *Answer: - Union Water Power Minister C.R. Patil/केंद्रीय जल शक्ति मंत्री सीआर पाटिल* *3.Which country recently banned all civilian drone flights ahead of the European Union summit in Copenhagen?* हाल ही में किस देश ने कोपेनहेगन में यूरोपीय संघ शिखर सम्मेलन से पहले सभी नागरिक ड्रोन उड़ानों पर प्रतिबंध लगा दिया है? *Answer: - Denmark/डेनमार्क* *4.Who was recently elected the new President (37th) of the Board of Control for Cricket in India (BCCI)?* हाल ही में किसको भारतीय क्रिकेट कंट्रोल बोर्ड (BCCI) का नया अध्यक्ष(37वां) चुना गया है? *Answer: - Mithun Manhas/मिथुन मन्हास* *5.The central government has issued guidelines for opening approximately how many public EV charging stations in India under the PM e-Drive scheme?* केंद्र सरकार ने पीएम ई-ड्राइव योजना के तहत भारत में लगभग कितने पब्लिक ईवी चार्जिंग स्टेशनों को खोलने के लिए दिशानिर्देश जारी किए हैं? *Answer: - 72,300* *6.Where was the country's first Integrated Oncology Research and Care Center inaugurated by the Ministry of AYUSH?* आयुष मंत्रालय द्वारा कहाँ देश के पहले एकीकृत ऑन्कोलॉजी अनुसंधान एवं देखभाल केंद्र का शुभारंभ किया गया है? *Answer: - All India Institute of Ayurveda, Goa/अखिल भारतीय आयुर्वेद संस्थान, गोवा* *7.Who recently won India's first gold medal at the World Para Athletics Championships, 2025?* हाल ही में विश्व पैरा एथलेटिक्स चैंपियनशिप, 2025 में किसने भारत के लिए पहला स्वर्ण पदक जीता है? *Answer: - Shailesh Kumar/शैलेश कुमार* *8.Which districts of Jammu and Kashmir have been selected as aspirational agricultural districts under the 'Pradhan Mantri Dhan Dhanya Krishi Yojana'?* ‘प्रधानमंत्री धन धान्य कृषि योजना’ के तहत जम्मू-कश्मीर के किस जिले को आकांक्षी कृषि जिले के रूप में चुना गया है? *Answer: - Kishtwar District/किश्तवाड़ जिला* *9.Which ministry launched the "Clean City Jodi" initiative on September 27, 2025?* किस मंत्रालय द्वारा 27 सितंबर, 2025 को “स्वच्छ शहर जोड़ी” पहल की शुरुआत की गई है? *Answer: - Ministry of Home and Urban Affairs (MoHUA)/गृह एवं शहरी कार्य मंत्रालय (MoHUA)* *10.India and which country have jointly co-sponsored the resolution for 'International Milk Day'?* भारत और किस देश ने संयुक्त रूप से ‘अंतर्राष्ट्रीय दुग्ध दिवस’ के लिए प्रस्ताव को सह-प्रायोजित किया गया है? *Answer: - Ireland/आयरलैंड* *11.Where will Prime Minister Shri Narendra Modi attend the centenary celebrations of the Rashtriya Swayamsevak Sangh (RSS) as the chief guest on October 1, 2025?* प्रधानमंत्री श्री नरेंद्र मोदी 1 अक्टूबर, 2025 को कहाँ राष्ट्रीय स्वयंसेवक संघ (आरएसएस) के शताब्दी समारोह में मुख्य अतिथि के रूप में भाग लेंगे? *Answer: - New Delhi/नई दिल्ली में* *12.Which country will Minister of State for Textiles and External Affairs Shri Pabitra Margherita visit from October 1-3, 2025?* वस्‍त्र एवं विदेश राज्य मंत्री श्री पबित्रा मार्गेरिटा 1-3 अक्टूबर 2025 तक किस देश का दौरा करेंगे? *Answer: - Russia/रूस* *13.GI-tagged Joha rice belongs to which state?* जीआई टैग वाला जोहा चावल किस राज्य से संबंधित है? *Answer: - Assam/असम* *14.What percentage of the national economy does agriculture currently contribute to?* वर्तमान में कृषि राष्ट्रीय अर्थव्यवस्था में कितने प्रतिशत का योगदान देता है? *Answer: - 5.5%* *15.At which international airport did the Civil Aviation Minister recently inaugurate the 'Udaan Yatri Cafe'?* हाल ही में नागरिक उड्डयन मंत्री ने किस अंतरराष्ट्रीय हवाई अड्डे पर ‘उड़ान यात्री कैफे’ का उद्घाटन किया है? *Answer: - Vijayawada International Airport/विजयवाड़ा अंतरराष्ट्रीय हवाई अड्डे*

The Hindu Vocabulary 30 Sep 2025 1. Heinous (Adjective) Meaning: (Of a person or wrongful act, especially a crime) utterly odious or wicked. Hindi: जघन्य, घृणित। Synonyms: Atrocious, monstrous, wicked, abominable. Antonyms: Admirable, virtuous, commendable. Example: The Congress described the remarks as a "chilling and heinous" death threat to its leader. Related Words: Heinously (adverb), heinousness (noun). 2. Machinations (Noun) Meaning: A scheming or crafty action or artful design intended to accomplish some usually evil end. Hindi: साज़िश, कुचक्र। Synonyms: Plots, schemes, intrigues, conspiracies. Antonyms: Honesty, frankness, candor. Example: A Congress leader stated that the politically conscious people of Bihar will defeat these machinations. Related Words: Machinate (verb). 3. Coalesce (Verb) Meaning: To come together to form one mass or whole. Hindi: मिलना, एकजुट होना। Synonyms: Merge, unite, combine, amalgamate. Antonyms: Separate, divide, split. Example: In sports, individual and collective aspirations find a way to coalesce. Related Words: Coalescence (noun), coalescent (adjective). 4. Ethereal (Adjective) Meaning: Extremely delicate and light in a way that seems too perfect for this world. Hindi: अलौकिक, स्वर्गीय। Synonyms: Delicate, exquisite, airy, celestial. Antonyms: Earthly, solid, substantial, mundane. Example: Astronomers are treated to this ethereal 'music' every time they eavesdrop on the universe. Related Words: Ethereally (adverb). 5. Cataclysmic (Adjective) Meaning: Relating to or denoting a large-scale and violent event in the natural world. Hindi: प्रलयकारी, विनाशकारी। Synonyms: Catastrophic, disastrous, devastating, calamitous. Antonyms: Fortunate, beneficial, harmless. Example: Gravitational waves are caused by cataclysmic events like merging black holes. Related Words: Cataclysm (noun). 6. Elusive (Adjective) Meaning: Difficult to find, catch, or achieve. Hindi: मायावी, पकड़ में न आने वाला। Synonyms: Evasive, slippery, intangible, hard to pin down. Antonyms: Accessible, attainable, clear, definite. Example: A detector must be isolated from all vibrations that could obscure the elusive signals. Related Words: Elude (verb), elusiveness (noun). 7. Bifurcate (Verb) Meaning: To divide into two branches or forks. Hindi: दो भागों में बाँटना, विभाजित करना। Synonyms: Split, divide, fork, separate. Antonyms: Unite, join, merge, converge. Example: A climate activist supported the decision to bifurcate the erstwhile State of Jammu and Kashmir into Union Territories. Related Words: Bifurcation (noun). 8. Duplicitous (Adjective) Meaning: Deceitful; two-faced. Hindi: कपटी, छली। Synonyms: Deceitful, deceptive, treacherous, double-dealing. Antonyms: Honest, trustworthy, sincere, straightforward. Example: The UN's selection process risks legitimising a country's duplicitous stance on terrorism. Related Words: Duplicity (noun). 9. Paradoxical (Adjective) Meaning: Seemingly absurd or self-contradictory. Hindi: विरोधाभासी। Synonyms: Contradictory, inconsistent, incongruous, anomalous. Antonyms: Consistent, logical, straightforward. Example: A recent study reveals a paradoxical landscape in intergenerational dynamics. Related Words: Paradox (noun), paradoxically (adverb). 10. Nadir (Noun) Meaning: The lowest or most unsuccessful point in a situation. Hindi: निम्नतम बिंदु, पतन। Synonyms: Low point, rock bottom, trough, abyss. Antonyms: Zenith, peak, acme, pinnacle. Example: The nadir of the tournament was reached when the winning team was denied the trophy after the final.

*17.The words 'Satyameva Jayate' are taken from which Upanishad?* 'सत्यमेव जयते' शब्द किस उपनिषद से लिया गया है? *Answer: - Mundakopanishad/मुण्डकोपनिषद्* *18.When and where was India's first nuclear test conducted?* भारत का पहला परमाणु परीक्षण कब और कहाँ हुआ था? *Answer: - 18 May 1974, Pokhran (Rajasthan)/18 मई 1974, पोखरण (राजस्थान)* *19.When did the Constituent Assembly first meet?* संविधान सभा की पहली बैठक कब हुई थी? *Answer: - 9 December, 1946/9 दिसम्बर 1946* *20.Which is the 'largest gland in the human body'?* ‘मानव शरीर की सबसे बड़ी ग्रंथि’ कौन सी है? *Answer: - Liver/यकृत* Double Tap ❤️ if this helped you!

*करेंट अफेयर्स : 30 सितम्बर 2025* *(Multiple Choice Q & A)* -------------------------------------- *1.Who has the central government recently appointed as the new Deputy Governor of the Reserve Bank of India (RBI)?* हाल ही में केंद्र सरकार ने किसको भारतीय रिजर्व बैंक (RBI) का नया डिप्टी गवर्नर नियुक्त किया है? *Answer: - Shirish Chandra Murmu/शिरीष चंद्र मुर्मू* *2.When will the Indian Space Research Organization's AI-powered semi-humanoid robot 'Vyommitra' be launched?* भारतीय अंतरिक्ष अनुसंधान संगठन का एआई-संचालित अर्ध-मानव रोबोट ‘व्योममित्र’ कब लॉन्च होगा? *Answer: - December 2025/दिसंबर 2025 में* *3.India's Cold Desert Biosphere Reserve, located in which state, has recently been included in UNESCO's World Biosphere Reserve Network?* हाल ही में किस राज्य में स्थित भारत के शीत मरुस्थल बायोस्फीयर रिजर्व को यूनेस्को के विश्व बायोस्फीयर रिजर्व नेटवर्क में शामिल किया गया है? *Answer: - Himachal Pradesh/हिमाचल प्रदेश* *4.What is the daily milk availability per capita in India in 2023-24?* भारत में प्रत्येक व्यक्ति के लिए दूध की उपलब्धता वर्ष 2023-24 में प्रतिदिन कितना हो गई है? *Answer: - 471 grams/471 ग्राम* *5.How many of India's biosphere reserves have been listed in UNESCO's prestigious global network by September 2025?* सितंबर, 2025 तक यूनेस्को के प्रतिष्ठित वैश्विक नेटवर्क में भारत के कितने बायोस्फीयर रिजर्व सूचीबद्ध हो गए हैं? *Answer: - 13 biosphere reserves/13 बायोस्फीयर रिजर्व* *6.How many Ramsar sites in India, recognized as wetlands of international importance, have currently increased to?* अंतरराष्ट्रीय महत्व की आर्द्रभूमि के रूप में मान्यता प्राप्त भारत के रामसर स्थलों की संख्या बढ़कर वर्तमान में कितनी हो गई है? *Answer: - 93 Ramsar sites/93 रामसर स्थल* *7.The International Union for Conservation of Nature (IUCN) has recognized India's first dugong conservation reserve, located in which state?* अंतर्राष्ट्रीय प्रकृति संरक्षण संघ (IUCN) ने किस राज्य में स्थित भारत के पहले डुगोंग संरक्षण रिज़र्व को मान्यता दी है? *Answer: - Tamil Nadu/तमिलनाडु* *8.In which city was the country's first 'Central Tissue Bank' recently established?* हाल ही में किस शहर में देश का पहला ‘केंद्रीय ऊतक बैंक’ स्थापित किया गया है? *Answer: - Delhi/दिल्ली में* *9.Which country has announced the launch of the world's first closed fuel cycle nuclear power system by 2030?* किस देश ने वर्ष 2030 तक दुनिया की पहली बंद ईंधन चक्र वाली परमाणु ऊर्जा प्रणाली शुरू करने की घोषणा की है? *Answer: - Russia/रूस* *10.September 29, 2025 Who addressed the inaugural session of the 42nd Indian Coast Guard (ICG) Commanders' Conference?* 29 सितंबर, 2025 किसने 42वें भारतीय तटरक्षक बल (आईसीजी) कमांडरों के सम्मेलन के उद्घाटन सत्र को संबोधित किया है? *Answer: - Defence Minister Shri Rajnath Singh/रक्षामंत्री श्री राजनाथ सिंह* *11.On which date is 'International Translation Day' celebrated every year?* प्रतिवर्ष किस तारीख को ‘अंतर्राष्ट्रीय अनुवाद दिवस’ मनाया जाता है? *Answer: - September 30/30 सितंबर* *12.In which state has the National Biodiversity Authority approved Rs 82 lakh for red sandalwood conservation?* राष्ट्रीय जैव विविधता प्राधिकरण ने किस राज्य में लाल चंदन संरक्षण के लिए 82 लाख रुपये को मंजूरी दी है? *Answer: - Andhra Pradesh/आंध्र प्रदेश में* *13.How many trains does the Amrit Bharat Express currently operate across the country?* अमृत भारत एक्सप्रेस, वर्तमान में देश भर में कितने ट्रेनों का संचालन करती है? *Answer: - 12 trains/12 ट्रेन* *14.Indian defence equipment is currently exported to over how many countries, including the United States, France, and Armenia?* भारतीय रक्षा उपकरण वर्तमान में संयुक्त राज्य अमेरिका, फ्रांस और आर्मेनिया सहित कितने देशों से अधिक देशों को निर्यात किए जाते हैं? *Answer: - 100 countries/100 देश* *15.Approximately what percentage of India's dairy farming workforce isb women?* भारत के डेयरी फार्मिंग में लगभग कितना प्रतिशत कार्यबल महिलाओं का है? *Answer: - 70%* ------------------------------------- *🎯 Static GK MCQ* ------------------------------------- *16.In which year did the 'Chauri Chaura' incident take place?* 'चौरी-चौरा' कांड किस वर्ष हुआ था? *Answer: - 1922*

🔆 Pradhan Mantri Matru Vandana Yojana (PMMVY) 📍 Why in Focus? ✅ As of July 2025, over 4 crore beneficiaries have received maternity benefits under PMMVY. 📍 About the Scheme: ✅ Launched in 2017, centrally sponsored; part of Mission Shakti (Women Empowerment). ✅ Nodal Ministry: Ministry of Women & Child Development. ✅ Target Beneficiaries: Pregnant women 18 yrs+; first child under PMMVY, second child only if girl (PMMVY 2.0). ✅ Monitoring: Done through PMMVYSoft at multiple levels. ✅ Linked to SDG 3 (Health) & SDG 5 (Gender Equality). 📍 Features: ✅ PMMVY (2017–22): ₹5,000 incentive for 1st child in 3 installments; integrated with Janani Suraksha Yojana (JSY). ✅ PMMVY 2.0 (since Apr 2022): • 1st child: ₹5,000 in 2 installments. • 2nd child (if girl): ₹6,000 lump sum. ✅ Direct Benefit Transfer via Aadhar Payment Bridge System. 📍 Mission Shakti Umbrella: ✅ Sambal – safety/security (OSC, Helpline, BBBP, Nari Adalat). ✅ Samarthya – empowerment (Ujjwala, Swadhar Greh, Working Women Hostel, Creches, PMMVY, Gap funding for women’s economic empowerment). ✅ Mains Question: “Critically analyze the role of PMMVY in improving maternal health and promoting gender equality. How does its integration under Mission Shakti enhance women’s empowerment?” (250 words)

A. Damages hard drives B. Spies on user activity without consent C. Cleans up junk files D. Repairs corrupted files Answer: B. Spies on user activity without consent 21. A security policy is: A. A game update B. A set of rules and practices for managing security C. A type of hacking tool D. A physical firewall device Answer: B. A set of rules and practices for managing security 22. The act of converting data into a secure code is known as: A. Defragmentation B. Compiling C. Encryption D. Emulation Answer: C. Encryption 23. Which of these is a common form of physical attack on a computer system? A. Virus infection B. Keylogger C. Unauthorized access to a server room D. Spam email Answer: C. Unauthorized access to a server room 24. Cookies in web browsers are mainly used to: A. Execute code B. Steal personal data C. Store user session and preferences D. Block ads Answer: C. Store user session and preferences 25. Which of the following helps in disaster recovery? A. Spam filters B. Backups C. Pop-up blockers D. Screen savers Answer: B. Backups

Computer 🖥️ MCQ ------------------------------- 1. What is the main goal of computer security? A. Speed up the computer B. Reduce file size C. Protect data and systems from threats D. Increase internet speed Answer: C. Protect data and systems from threats 2. Which of the following is NOT a basic principle of computer security? A. Confidentiality B. Integrity C. Availability D. Affordability Answer: D. Affordability 3. What does a firewall primarily protect against? A. Power surges B. Unauthorized access to or from a private network C. Physical theft D. Data redundancy Answer: B. Unauthorized access to or from a private network 4. Which of the following is a strong password? A. password123 B. John1980 C. M$9@bL!7qZ D. 12345678 Answer: C. M$9@bL!7qZ 5. Malware is a term used to describe: A. Licensed software B. Harmful software designed to damage or disrupt systems C. Antivirus software D. Software updates Answer: B. Harmful software designed to damage or disrupt systems 6. Phishing attacks are designed to: A. Hack routers only B. Test antivirus software C. Trick users into giving up confidential information D. Optimize system speed Answer: C. Trick users into giving up confidential information 7. What is the function of antivirus software? A. Install games B. Block pop-up ads C. Detect and remove malicious software D. Format hard drives Answer: C. Detect and remove malicious software 8. Which of the following best defines “encryption”? A. Deleting unnecessary files B. Hiding data in folders C. Converting data into a coded format to prevent unauthorized access D. Making data available to everyone Answer: C. Converting data into a coded format to prevent unauthorized access 9. A security patch is: A. A replacement for antivirus B. An update that fixes known vulnerabilities C. A type of malware D. A keyboard protection cover Answer: B. An update that fixes known vulnerabilities 10. Which type of attack tries many passwords until the correct one is found? A. Brute force attack B. DoS attack C. SQL injection D. Man-in-the-middle Answer: A. Brute force attack 11. The concept of 'least privilege' in security means: A. Giving full access to all users B. Giving users the minimum access necessary to do their jobs C. Blocking all users permanently D. Ignoring access levels Answer: B. Giving users the minimum access necessary to do their jobs 12. Which of the following is NOT a type of malware? A. Worm B. Virus C. Firewall D. Trojan horse Answer: C. Firewall 13. Which of the following is used to verify a user’s identity? A. Screenshot B. Backup C. Authentication D. Cookie Answer: C. Authentication 14. A Denial-of-Service (DoS) attack: A. Grants extra privileges B. Encrypts user files C. Makes a computer or network resource unavailable to users D. Repairs operating system errors Answer: C. Makes a computer or network resource unavailable to users 15. What does VPN stand for? A. Very Private Network B. Virtual Public Node C. Virtual Private Network D. Verified Protocol Network Answer: C. Virtual Private Network 16. Two-factor authentication involves: A. Two users sharing one password B. Two passwords used at once C. Using two different methods to verify identity D. Logging in from two locations Answer: C. Using two different methods to verify identity 17. Which of the following is a physical security measure? A. Strong passwords B. Biometric fingerprint scanners C. Firewall configuration D. Antivirus updates Answer: B. Biometric fingerprint scanners 18. What does a digital certificate do? A. Ensures the physical safety of hardware B. Verifies the authenticity of websites or software C. Encrypts USB drives D. Boosts Wi-Fi speed Answer: B. Verifies the authenticity of websites or software 19. A backdoor in software is used to: A. Improve performance B. Allow hidden access to the system C. Block viruses D. Upgrade firmware Answer: B. Allow hidden access to the system 20. Spyware is a type of malware that:

5वां राष्ट्रीय जल पुरस्कार, 2023 -राष्ट्रपति द्रौपदी मुर्मु द्वारा नई दिल्ली में आयोजित एक समारोह में प्रदत्त। (अक्टूबर, 2024) सर्वश्रेष्ठ 3 राज्य- 1. ओडिशा, 2. उत्तर प्रदेश, 3. पुडुचेरी तथा गुजरात । -सर्वश्रेष्ठ जिले- 1. विशाखापत्तनम, आंध्र प्रदेश (दिक्षणी क्षेत्र); 2.धलाई, त्रिपुरा (उत्तर-पूर्व क्षेत्र); 3.बांदा, उ.प्र. तथा गादरबल, जम्मू और कश्मीर (उत्तरी क्षेत्र, संयुक्त विजेता); 4. इंदौर, मध्य प्रदेश (पश्चिम क्षेत्र); 5.बलांगिर, ओडिशा (पूर्व क्षेत्र)। -सर्वश्रेष्ठ ग्राम पंचायत - पुल्लमपारा, तिरुवनंतपुरम, केरल -सर्वश्रेष्ठ शहरी स्थानीय निकाय- सूरत, गुजरात।

एशिया कप 2025 का विजेता बना भारत #Asiacup 🏏 एशिया कप 2025 (17वाँ संस्करण) 📍 मेज़बान: संयुक्त अरब अमीरात (9–28 सितम्बर 2025) 🏆 विजेता: 🇮🇳 भारत 🥈 उपविजेता: 🇵🇰 पाकिस्तान 🎯 फाइनल रिजल्ट: Pak -  146/10 & भारत  - 150/5  (  5 विकेट से विजयी) 👑 सबसे अधिक रन: अभिषेक शर्मा (भारत) – 314 रन 🎯 सबसे अधिक विकेट: कुलदीप यादव (भारत) – 17 विकेट 🇮🇳 Congratulations.. भारत बना एशिया कप 2025 का चैम्पियन! 🇮🇳✨

Computer 🖥️ MCQ on number system -_-------_-----_-------_-----_-----_------_-----_------- 1.Which number system has base 2? A) Decimal B) Binary C) Octal D) Hexadecimal Answer: B) Binary 2. The decimal number 15 is equal to which binary number? A) 1110 B) 1111 C) 1101 D) 1011 Answer: B) 1111 3. What is the base of the hexadecimal number system? A) 10 B) 8 C) 16 D) 2 Answer: C) 16 4. What is the binary equivalent of the hexadecimal number 'A'? A) 1010 B) 1110 C) 1001 D) 1100 Answer: A) 1010 5. Which of the following number systems is used by most modern computers internally? A) Decimal B) Octal C) Hexadecimal D) Binary Answer: D) Binary 6. The octal number system uses how many digits? A) 2 B) 8 C) 10 D) 16 Answer: B) 8 7. What is the decimal value of binary 1101? A) 12 B) 13 C) 14 D) 15 Answer: B) 13 8. Which of the following is a valid binary number? A) 1021 B) 1101 C) 19AB D) 2F5 Answer: B) 1101 9. Which number system uses the digits 0-9 and letters A-F? A) Binary B) Octal C) Decimal D) Hexadecimal Answer: D) Hexadecimal 10. What is the hexadecimal representation of decimal number 255? A) FF B) F0 C) 1F D) 0F Answer: A) FF 11. How many bits are there in a nibble? A) 2 B) 4 C) 8 D) 16 Answer: B) 4 12. What is the binary equivalent of the decimal number 25? A) 11001 B) 10101 C) 11100 D) 11000 Answer: A) 11001 13. Which one of the following is not a positional number system? A) Decimal B) Binary C) Roman D) Octal Answer: C) Roman 14. The maximum value of a 4-bit binary number is: A) 1111 = 15 B) 1001 = 9 C) 1010 = 10 D) 1100 = 12 Answer: A) 1111 = 15 15. What is the octal equivalent of the binary number 101101? A) 65 B) 55 C) 45 D) 35 Answer: B) 55 (Binary 101101 → Group: 101 101 → Octal: 5 5) 16. Which of the following conversions is correct? A) Decimal 16 = Hexadecimal G B) Binary 1010 = Decimal 10 C) Octal 77 = Decimal 56 D) Hexadecimal F = Decimal 20 Answer: B) Binary 1010 = Decimal 10 17. The base of the decimal number system is: A) 8 B) 2 C) 10 D) 16 Answer: C) 10 18. How many unique values can be represented using 3 bits? A) 4 B) 6 C) 8 D) 16 Answer: C) 8 (2³ = 8 values: 0 to 7) 19. What is the binary equivalent of octal number 7? A) 111 B) 101 C) 100 D) 011 Answer: A) 111 20. What is the hexadecimal equivalent of binary number 11010111? A) D7 B) C7 C) D5 D) E7 Answer: A) D7 (1101 = D, 0111 = 7)