Infosys Quality Analyst Interview Questions and Answers

Six Sigma employs methodologies like DMAIC and DMADV to improve processes and reduce defects.

• DMAIC (Define, Measure, Analyze, Improve, Control) is used for improving existing processes. Example: Reducing defects in manufacturing.

• DMADV (Define, Measure, Analyze, Design, Verify) is used for creating new processes. Example: Designing a new product with minimal defects.

• Lean Six Sigma combines Lean principles with Six ...read more

A framework is a structured approach that provides guidelines and best practices for achieving specific goals in a project.

• Components include: 1) Structure - defines the organization of the framework, e.g., Agile framework for software development.

• 2) Processes - the methodologies used, such as Waterfall or Scrum.

• 3) Tools - software or applications that facilitate the framework, like JIRA for Agile project manageme...read more

OWASP top 10 vulnerabilities include injection, broken authentication, sensitive data exposure, etc.

• Injection (e.g. SQL injection, LDAP injection)

• Broken Authentication (e.g. session management flaws)

• Sensitive Data Exposure (e.g. inadequate data protection)

• XML External Entities (XXE)

• Broken Access Control (e.g. insecure direct object references)

• Security Misconfiguration

• Cross-Site Scripting (XSS)

• Insecure Deserializat...read more

HTTP error code for API is 4xx or 5xx

• 4xx error codes indicate client-side errors, such as 400 Bad Request or 404 Not Found

• 5xx error codes indicate server-side errors, such as 500 Internal Server Error or 503 Service Unavailable

SQL queries are essential for data retrieval and manipulation in databases, crucial for Quality Analysts.

• Understand the database schema before writing queries.

• Use SELECT statements to retrieve data, e.g., SELECT * FROM users;

• Utilize WHERE clauses to filter results, e.g., SELECT * FROM orders WHERE status = 'shipped';

• Join tables to combine related data, e.g., SELECT customers.name, orders.amount FROM customers JOIN...read more

Cryptography is the practice and study of techniques for secure communication in the presence of third parties.

• Cryptography involves encrypting and decrypting data to ensure confidentiality and integrity.

• It uses algorithms and keys to transform plaintext into ciphertext and vice versa.

• Examples include AES, RSA, and DES encryption algorithms.

• Cryptography is used in securing communication over the internet, digital ...read more