3196+ MCQ Questions in english हिन्दी

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

Present simple is used for daily routines.

What is reinforcement learning?

AI agent learns via rewards and penalties.

Neural network is inspired by:

Layers of interconnected computational "neurons".

Supervised learning uses:

Maps inputs to known outputs.

Overfitting in ML means:

Captures noise rather than patterns—poor for new data.

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What does NLP stand for?

Computers processing human language.

Indexing in DBMS:

Improves retrieval performance at cost of space.

NoSQL databases are designed for:

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

ACID properties ensure:

Atomicity, consistency, isolation, durability.

A primary key:

Ensures each record is unique.

SQL stands for:

Used to manage relational databases.

SQL stands for:

Used to manage relational databases.

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API stands for:

Interface for software component interaction.

RAID level that mirrors data:

RAID 1 — redundancy through duplication.

A process state of “zombie” means:

Terminated yet still in process table.

Virtual memory uses:

Enables running larger programs than physical RAM.

Multitasking OS can run:

Handles concurrent processes.

Two-factor authentication adds:

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

A firewall is used to:

Network security barrier

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Phishing is:

deceitful emails/websites to steal info.

What does VPN do?

Protects privacy via secure tunneled connection.

Which is a symmetric encryption algorithm?

AES — same key for encryption/decryption.

DNS maps:

Translates human-friendly names to IPs.

HTTP uses which port by default?

Port 80 — standard web traffic.

IP address uniquely identifies:

End device in network communication.

TCP stands for:

Reliable, connection-oriented transport protocol.

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OSI model has how many layers?

Seven — layers from physical to application.

A full binary tree of height h has:

Maximum nodes in perfectly balanced tree.

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