In a software development scenario, if a developer needs to optimize database queries for an Infosys client project, which of the following is NOT a standard optimization technique?
Answer: B
Using wildcard characters at the beginning (like '%search') prevents index usage and is a poor optimization practice. Standard techniques include indexing, denormalization, and caching.
Q.22Medium
Infosys' 'Infosys Equinix' partnership primarily focuses on which area?
Answer: A
The Infosys and Equinix partnership provides hybrid cloud and edge computing solutions with colocation services.
Q.23Medium
A candidate appears for Infosys recruitment. In the coding round, they need to find the longest substring without repeating characters. What data structure would be most efficient?
Answer: B
A Hash Map is ideal for tracking character indices and detecting repeating characters with O(n) time complexity.
Q.24Medium
In an Infosys placement interview, if asked about handling a critical production issue with multiple stakeholders involved, what would be the BEST approach?
Answer: B
Professional incident handling requires clear communication, proper escalation, and detailed documentation to ensure transparency and prevent recurrence.
Q.25Medium
Infosys' Edcast platform is primarily designed for which purpose?
Answer: B
Infosys EdCast is an AI-powered learning platform that provides personalized learning experiences to employees for continuous skill development.
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Q.26Medium
Infosys' presence is strongest in which geographical region?
Answer: B
While headquartered in India, Infosys has significant presence in North America and Europe, which contribute majority of its revenue.
Q.27Medium
Which certification is widely recognized and promoted by Infosys for cloud professionals?
Answer: D
Infosys promotes multiple cloud certifications including AWS, Azure, and Google Cloud to ensure diverse skill sets among employees.
Q.28Medium
Infosys' strategy for business continuity and disaster recovery typically includes which of the following?
Answer: B
Infosys maintains geographic distribution of data centers across multiple regions with automated redundancy for business continuity.
Q.29Medium
Infosys' Vision 2040 framework emphasizes which key area?
Answer: B
Infosys Vision 2040 focuses on sustainable business practices, environmental responsibility, and creating positive societal impact.
Q.30Medium
A developer at Infosys needs to optimize a recursive function that calculates Fibonacci numbers. Which approach would be most efficient?
Answer: B
Memoization or dynamic programming reduces time complexity from exponential to linear by caching previously computed results.
Q.31Medium
In 2024-25, what is Infosys' primary focus for digital transformation services?
Answer: B
Infosys' 2024-25 strategy emphasizes cloud migration, artificial intelligence, and process automation for digital transformation.
Q.32Medium
Which programming paradigm is most suitable for developing scalable microservices at Infosys?
Answer: B
Object-oriented programming provides modularity, encapsulation, and reusability necessary for scalable microservices architecture.
Q.33Medium
In distributed systems at Infosys, what does CAP theorem stand for?
Answer: B
CAP theorem states that distributed systems can guarantee at most two of three properties: Consistency, Availability, and Partition tolerance.
Q.34Medium
Infosys collaborates with which major cloud provider for hybrid cloud solutions?
Answer: B
Infosys works with multiple cloud providers including AWS, Microsoft Azure, and Google Cloud for comprehensive hybrid cloud services.
Q.35Medium
A sorting algorithm with space complexity O(1) is known as:
Answer: A
In-place sorting algorithms use constant extra space O(1), modifying the input array directly (e.g., quicksort, heapsort).
Q.36Medium
What is Infosys' ESG (Environmental, Social, Governance) commitment target by 2030?
Answer: C
Infosys has committed to achieving net-zero carbon emissions by 2030 as part of its sustainability and ESG initiatives.
Q.37Medium
In REST API design followed by Infosys developers, what does the HTTP status code 429 indicate?
Answer: C
HTTP 429 indicates rate limiting - the user has sent too many requests in a given time period.
Q.38Medium
What is the average-case time complexity of quicksort algorithm?
Answer: A
Quicksort has average-case time complexity O(n log n) with good pivot selection, making it efficient for most practical scenarios.
Q.39Medium
What percentage of Infosys' revenue comes from digital and cloud services as of 2024?
Answer: C
Digital and cloud services represent over 50% of Infosys' revenue in 2024, reflecting the company's focus on modern technology solutions.
Q.40Medium
In microservices architecture used by Infosys, what does the Circuit Breaker pattern prevent?
Answer: B
The Circuit Breaker pattern in microservices prevents cascading failures by stopping requests to a failing service and allowing it time to recover.
