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Data (Computer Science) Solved Questions & Notes (2026) - Apex Rankers

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20 Total Solved Questions
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20 Questions in this set
Select the best option for the following modern Computer Aptitude Test questions (covering AI, Cloud, Cybersecurity, and Modern Hardware):
Q. 1 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Big Data'?
A
Very large files
B
Extremely large datasets
✓ Correct
C
High-resolution images
D
Many hard drives
💡 Step-by-Step Explanation & Concept Rationale
Big Data refers to datasets so complex that traditional software cannot handle them.
Q. 2 Computer Aptitude Test
Difficulty: Medium (1 Mark)
Which is a 'NoSQL' database?
A
MySQL
B
MongoDB
✓ Correct
C
PostgreSQL
D
Oracle
💡 Step-by-Step Explanation & Concept Rationale
NoSQL databases like MongoDB are non-relational and handle unstructured data.
Q. 3 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Big Data Analytics'?
A
Cleaning hard drives
B
Finding patterns in large data
✓ Correct
C
Drawing big charts
D
Speeding up internet
💡 Step-by-Step Explanation & Concept Rationale
This involves examining large/complex data to uncover hidden trends.
Q. 4 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'SQL'?
A
Standard Query Language
B
Simple Quick Link
C
System Quant Logic
D
Structured Query Language
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
SQL is the standard language for managing relational databases.
Q. 5 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Data Mining'?
A
Digging for data
B
Extracting patterns from data
✓ Correct
C
Entering data
D
Storing data
💡 Step-by-Step Explanation & Concept Rationale
The process of discovering patterns in large data sets.
Q. 6 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is a 'Data Lake'?
A
A messy hard drive
B
A repository of raw, unstructured data
✓ Correct
C
A cloud backup
D
A cooling system
💡 Step-by-Step Explanation & Concept Rationale
Data lakes store vast amounts of data in its native format until needed for analysis.
Q. 7 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is a 'Vector Database' optimized for?
A
Simple text
B
High-dimensional data and AI embeddings
✓ Correct
C
Large images
D
Spreadsheet data
💡 Step-by-Step Explanation & Concept Rationale
Vector databases allow for fast similarity searches in AI applications.
Q. 8 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Anonymization' in data privacy?
A
Encrypting data
B
Removing personal identifiers from data
C
Deleting data
D
Removing personally identifiable information from datasets
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Anonymized data cannot be linked back to an individual, protecting their privacy.
Q. 9 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Big Data Analytics'?
A
Cleaning disks
B
Finding patterns in massive datasets
C
The process of examining extremely large datasets to find trends
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Companies use big data to understand customer behavior and market trends.
Q. 10 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is a 'NoSQL' database?
A
No database
✓ Correct
B
Non-relational database for unstructured data
C
Fast SQL
💡 Step-by-Step Explanation & Concept Rationale
NoSQL (e.g., MongoDB) is great for real-time web apps and big data.
Q. 11 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Data Mining'?
A
Digging for gold
B
Discovering patterns in large datasets
C
The practice of automatically searching large stores of data to find patterns
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
It is used for business intelligence and predictive modeling.
Q. 12 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Metadata'?
A
Large data
B
Data that describes other data
C
Information that provides context for other data
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Example: A photo's metadata includes the date, time, and camera settings.
Q. 13 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Data Sovereignty'?
A
Storing data in space
B
Requirement that data stays within a specific country
C
Data is subject to the laws of the country where it is located
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
This is a major concern for international companies regarding privacy and compliance.
Q. 14 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'JSON'?
A
Java System
B
JavaScript Object Notation
C
Lightweight data-interchange format
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
JSON is the standard format used to send data between a server and a web application.
Q. 15 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'BigQuery'?
A
A big search
B
Google's serverless data warehouse
C
A fully-managed, AI-ready data warehouse
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
It allows for super-fast SQL queries on massive datasets.
Q. 16 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Kafka'?
A
A virus
B
Distributed event streaming platform
C
A platform for handling real-time data feeds
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Kafka is used for high-performance data pipelines and streaming analytics.
Q. 17 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'ETL' in data engineering?
A
Exit Total Link
B
Extract, Transform, Load
✓ Correct
C
Easy Text Logic
💡 Step-by-Step Explanation & Concept Rationale
The three-step process used to move data from a source into a data warehouse.
Q. 18 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Snowflake' in computing?
A
Cold computer
B
A cloud-based data platform
C
A cloud data warehouse for storing and analyzing large datasets
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
It is known for its ability to scale storage and compute independently.
Q. 19 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is 'Dark Data'?
A
Hidden code
B
Unused, untagged data stored by organizations
C
Data gathered through activities but not used to derive insights
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Managing dark data is a significant challenge for modern cybersecurity and storage.
Q. 20 Computer Aptitude Test
Difficulty: Medium (1 Mark)
What is a 'Data Lakehouse'?
A
A house for PCs
B
A system combining data lake and data warehouse features
C
An architecture that combines the cost-benefit of lakes with warehouse structure
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
It supports both unstructured data and high-performance SQL analysis.
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