Placement Papers - MCQ Practice Questions

A circular queue has size 10. If front=3 and rear=8, how many elements are currently in the queue?

TCS follows Agile methodology for most projects. Which practice is NOT a part of core Agile principles?

In a binary tree with 7 nodes, what is the maximum possible height?

TCS placement papers often include questions on SQL. What does the INNER JOIN operation do?

A coding problem requires finding the longest common substring of two strings. What is the optimal approach?

TCS employees working on REST APIs should follow which HTTP method for retrieving data without side effects?

In a graph traversal problem with 10 nodes and 15 edges, DFS (Depth-First Search) time complexity is O(V+E). What is the complexity here?

A TCS developer encounters a null pointer exception in Java. What is the PRIMARY cause?

In TCS technical assessments, a question asks about polymorphism. Which is NOT a type of polymorphism in OOP?

A transaction in database systems at TCS must satisfy ACID properties. What does the 'I' in ACID stand for?

In a complex algorithm with multiple nested loops, the time complexity is O(n²m) where n and m are independent variables. If n=100 and m=50, approximately how many operations?

TCS cybersecurity team emphasizes password security. Which is the STRONGEST password practice?

In a TCS project analyzing Big Data with MapReduce, what is the purpose of the 'Reducer' phase?

A TCS team is developing a microservices architecture where each service maintains its own database. Which of the following is the PRIMARY challenge they will face?

In the context of cloud computing, which AWS service would TCS recommend for automatically scaling web applications based on incoming traffic?

A TCS project requires processing 10 million records daily with complex business logic. The team needs to choose between batch processing and stream processing. Which statement is TRUE?

In TCS DevOps practices, what is the primary purpose of implementing CI/CD pipelines?

A TCS developer is optimizing a Java application and notices that the garbage collector is causing frequent pause times. Which JVM parameter would BEST address this issue for low-latency requirements?

In TCS security protocols, what does the principle of 'Zero Trust' architecture entail?

A TCS project uses Docker containers across 50+ servers. Which orchestration platform would be most suitable for managing container deployment, scaling, and updates at this scale?