UP-TO-DATE ACTUAL EXAM QUESTIONS AND 100% ACCURATE
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Candidate Name: ____________________________
Candidate ID: ________________________________
Date: ______________________________________
Examination Centre: __________________________
Time Allowed: 120 Minutes
Total Questions: 90
Instructions: Attempt all questions. Each question has only one correct answer.
Read carefully and select the most appropriate option.
Core Competency Areas Assessed:
• Software Engineering Principles & Lifecycle Models
• Object-Oriented Design & Design Patterns
• Data Structures & Algorithms
• Testing, Debugging & Quality Assurance
• Version Control & DevOps Fundamentals
• Databases & System Design
Instructions to Candidates:
You are required to complete all 90 questions within the allocated 120
minutes. Each question assesses applied knowledge of software engineering
concepts, including problem-solving, design reasoning, and technical
decision-making. Choose the best answer from the four provided options. No
external materials are permitted. Ensure all responses are clearly marked.
Introduction:
This assessment evaluates your readiness for Software Engineering (SWE)
roles by testing practical and theoretical knowledge across key domains such
as system design, coding principles, and development workflows. The
, scenarios reflect real-world engineering challenges and require analytical
thinking and technical precision.
Disclaimer: This is an original simulation exam created for educational
purposes and is not affiliated with or identical to any official certification or
institutional assessment.
Q1. A distributed system experiences inconsistent data across replicas after
concurrent updates. Which strategy best ensures eventual consistency while
maintaining availability?
A. Two-phase commit protocol
B. Strong consistency locking
C. Conflict-free replicated data types (CRDTs)
D. Centralized write coordination
Correct Answer: C. Conflict-free replicated data types (CRDTs)
Explanation:
CRDTs allow replicas to converge without coordination, ensuring eventual
consistency. Two-phase commit (A) sacrifices availability. Strong locking (B)
limits scalability. Central coordination (D) creates bottlenecks and single points
of failure.
Q2. A team adopts microservices but faces increased latency due to inter-
service communication. What is the most effective mitigation?
A. Increase database normalization
B. Introduce API gateway with caching
,C. Use synchronous REST calls only
D. Eliminate service boundaries
Correct Answer: B. Introduce API gateway with caching
Explanation:
Caching at the gateway reduces repeated calls. Normalization (A) doesn’t
address latency. Synchronous calls (C) worsen latency. Removing boundaries
(D) defeats microservices benefits.
Q3. Which SOLID principle is violated when a class handles both database
operations and UI rendering?
A. Open/Closed Principle
B. Single Responsibility Principle
C. Liskov Substitution Principle
D. Interface Segregation Principle
Correct Answer: B. Single Responsibility Principle
Explanation:
A class should have one reason to change. Combining UI and DB logic violates
SRP. Other principles relate to extensibility, substitution, and interface design.
Q4. In a hash table with chaining, performance degrades significantly. What is
the most likely cause?
A. Load factor is too low
B. Hash function produces many collisions
, C. Buckets are empty
D. Table size is too large
Correct Answer: B. Hash function produces many collisions
Explanation:
Poor hash distribution causes clustering. Low load factor (A) improves
performance. Empty buckets (C) are not problematic. Large size (D) generally
helps performance.
Q5. What is the time complexity of searching in a balanced binary search tree?
A. O(n)
B. O(log n)
C. O(1)
D. O(n log n)
Correct Answer: B. O(log n)
Explanation:
Balanced trees maintain logarithmic height. Linear time (A) occurs in skewed
trees. O(1) (C) is incorrect. O(n log n) (D) relates to sorting algorithms.
Q6. Which testing type ensures that individual components work correctly in
isolation?
A. Integration Testing
B. System Testing
C. Unit Testing
D. Acceptance Testing