471 MCQ Questions in english

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471 MCQ Questions in english हिन्दी

275. What is the meaning of “benevolent”?

A. Kind and generous

B. Angry

C. Stupid

D. Brave

“Bene” means good; benevolent = good-hearted.

274. Pick the correct preposition: She is fond _____ music.

A. of

B. in

C. on

D. about

"Fond of" is the correct prepositional phrase.

273. Choose the correct article: I saw _____ elephant at the zoo.

A. a

B. an

C. the

D. none

Use "an" before a vowel sound.

272. Which sentence is in passive voice?

A. She sings a song.

B. A song is sung by her.

C. She is singing a song.

D. She has sung a song.

Passive: object + verb (be + past participle) + by + subject.

271. Identify the correct sentence:

A. He don’t like apples.

B. He doesn’t likes apples.

C. He doesn’t like apples.

D. He not likes apples.

"Doesn't" requires base form of the verb.

270. Choose the correct tense: She _____ to school every day.

A. go

B. goes

C. gone

D. going

Present simple is used for daily routines.

269. What is reinforcement learning?

A. Learning from labeled data

B. Trial-and-error with feedback rewards

C. Clustering unlabeled data

D. Basic sorting algorithm

AI agent learns via rewards and penalties.

268. Neural network is inspired by:

A. CPU architecture

B. Computer networks

C. Human brain neurons

D. Binary logic

Layers of interconnected computational "neurons".

267. Supervised learning uses:

A. No labels

B. Labels/target output for training

C. Random output

D. Unstructured data only

Maps inputs to known outputs.

266. Overfitting in ML means:

A. Model is undertrained

B. Model fits training data too well but generalizes poorly

C. Model is perfect

D. Model ignores data

Captures noise rather than patterns—poor for new data.

265. What does NLP stand for?

A. Natural Learning Process

B. Neural Lisp Programming

C. Natural Language Processing

D. Numeric Linear Projection

Computers processing human language.

264. Indexing in DBMS:

A. Duplicates tables

B. Speeds up queries by quick lookups

C. Deletes redundant data

D. Compresses records

Improves retrieval performance at cost of space.

263. NoSQL databases are designed for:

A. Relational data only

B. Complex joins

C. Scalability and flexibility

D. Standalone desktop use

Schema-less storage like JSON docs or key-value pairs.

262. ACID properties ensure:

A. Data compression

B. Transaction reliability

C. Speed

D. UI design

Atomicity, consistency, isolation, durability.

261. A primary key:

A. Encrypts data

B. Uniquely identifies table records

C. Sorts tables

D. Stores passwords

Ensures each record is unique.

260. SQL stands for:

A. Structured Query Language

B. Simple Query Link

C. Secure Query Layer

D. Software Quality Level

Used to manage relational databases.

259. SQL stands for:

A. Structured Query Language

B. Simple Query Link

C. Secure Query Layer

D. Software Quality Level

Used to manage relational databases.

258. API stands for:

A. Application Program Interface

B. Application Programming Identity

C. Automatic Program Interface

D. Abstract Programming Instruction

Interface for software component interaction.

257. RAID level that mirrors data:

A. RAID 0

B. RAID 1

C. RAID 5

D. RAID 6

RAID 1 — redundancy through duplication.

256. Virtual memory uses:

A. Faster RAM

B. Hard disk as RAM extension

C. GPU memory

D. Cache exclusively

Enables running larger programs than physical RAM.

255. Multitasking OS can run:

A. Only one program

B. Multiple programs simultaneously

C. Disk management only

D. Device control

Handles concurrent processes.

254. Two-factor authentication adds:

A. Extra password

B. Time requirement

C. Second form of identity verification

D. Captcha

Enhances account security (e.g. code + password).

253. A firewall is used to:

A. Encrypt data

B. Filter incoming/outgoing network traffic

C. Host websites

D. Manage memory

Network security barrier

252. Phishing is:

A. Malware

B. Social engineering attack

C. Security patch

D. Antivirus software

deceitful emails/websites to steal info.

251. What does VPN do?

A. Speeds up internet

B. Creates encrypted private network over public internet

C. Scans for viruses

D. Manages web cookies

Protects privacy via secure tunneled connection.

250. Which is a symmetric encryption algorithm?

A. RSA

B. AES

C. Diffie-Hellman

D. ECC

AES — same key for encryption/decryption.

249. DNS maps:

A. IP → MAC

B. Port → Service

C. Domain names → IP addresses

D. URL → HTML

Translates human-friendly names to IPs.

248. HTTP uses which port by default?

A. 20

B. 20

C. 80

D. 443

Port 80 — standard web traffic.

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