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Placement Papers

TCS, Infosys, Wipro, Cognizant actual papers

312 Q 10 Topics Take Test
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Difficulty: All Easy Medium Hard 221–230 of 312
Topics in Placement Papers
Q.221 Medium Infosys Questions
Which HTTP status code should a REST API return when a resource is successfully created?
A 200 OK
B 201 Created
C 202 Accepted
D 204 No Content
Correct Answer:  B. 201 Created
EXPLANATION

HTTP status code 201 Created is the correct response when a new resource is successfully created via POST request, typically including the resource location in the response header.

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Q.222 Medium Infosys Questions
What does OWASP Top 10, which Infosys developers must follow, primarily address?
A Database performance optimization
B The most critical web application security risks
C Cloud infrastructure best practices
D Mobile app development frameworks
Correct Answer:  B. The most critical web application security risks
EXPLANATION

OWASP Top 10 lists the most critical web application security vulnerabilities that developers must understand and mitigate.

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Q.223 Medium Infosys Questions
In Infosys' cybersecurity protocols, which encryption standard is mandated for data at rest?
A DES (Data Encryption Standard)
B AES-256 (Advanced Encryption Standard)
C ROT13
D Base64 encoding
Correct Answer:  B. AES-256 (Advanced Encryption Standard)
EXPLANATION

AES-256 is the industry-standard encryption for data at rest, providing 256-bit key strength and is mandated in Infosys' security policies.

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Q.224 Medium Infosys Questions
Which of the following best describes the Infosys' commitment to 'Digital-First' customer experience in 2024-25?
A Completely eliminating phone support
B Prioritizing digital channels while maintaining traditional support options
C Increasing service costs for digital transactions
D Removing human interaction from all services
Correct Answer:  B. Prioritizing digital channels while maintaining traditional support options
EXPLANATION

Infosys' Digital-First approach prioritizes digital channels and experiences while still maintaining traditional support options for customer choice and accessibility.

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Q.225 Medium Infosys Questions
In Infosys' API rate limiting strategy, what does the Token Bucket algorithm control?
A User authentication credentials
B The maximum number of requests allowed within a time window
C Database transaction rollback
D SSL certificate validation
Correct Answer:  B. The maximum number of requests allowed within a time window
EXPLANATION

The Token Bucket algorithm is used to control the rate at which API requests are allowed, preventing abuse and ensuring fair resource utilization.

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Q.226 Medium Infosys Questions
Which design pattern is used when Infosys developers need to ensure only one instance of a database connection pool exists?
A Factory Pattern
B Observer Pattern
C Singleton Pattern
D Strategy Pattern
Correct Answer:  C. Singleton Pattern
EXPLANATION

The Singleton Pattern ensures that only one instance of a class (like a database connection pool) is created throughout the application lifecycle.

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Q.227 Medium Infosys Questions
What is the primary advantage of using containerization (Docker) in Infosys' DevOps pipeline?
A Increases code readability
B Ensures environment consistency across development and production
C Reduces SQL query execution time
D Eliminates the need for version control
Correct Answer:  B. Ensures environment consistency across development and production
EXPLANATION

Docker ensures that applications run consistently across different environments by packaging dependencies, which is crucial for Infosys' global deployment strategies.

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Q.228 Medium Infosys Questions
Which programming paradigm does Infosys predominantly use for cloud-native applications?
A Procedural
B Functional
C Object-Oriented
D Logic Programming
Correct Answer:  C. Object-Oriented
EXPLANATION

Infosys predominantly uses Object-Oriented programming for enterprise applications, though functional programming is increasingly used in cloud-native services.

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Q.229 Medium Infosys Questions
In microservices architecture used by Infosys, what does the Circuit Breaker pattern prevent?
A Memory leaks
B Cascading failures
C SQL injection attacks
D Buffer overflow
Correct Answer:  B. Cascading failures
EXPLANATION

The Circuit Breaker pattern in microservices prevents cascading failures by stopping requests to a failing service and allowing it time to recover.

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Q.230 Medium Infosys Questions
What percentage of Infosys' revenue comes from digital and cloud services as of 2024?
A Below 20%
B 30-40%
C Above 50%
D Negligible amount
Correct Answer:  C. Above 50%
EXPLANATION

Digital and cloud services represent over 50% of Infosys' revenue in 2024, reflecting the company's focus on modern technology solutions.

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