Amadeus Quality Analyst Interview Questions and Answers

Q1. Questions were based on PL/sql concepts
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Q1. Most of the concept related to Oracle Procedural Sql
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Q1. Most of the questions on oracle procedural sql
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Q1. What is Volte Call flow ?
Ans. 
Volte Call flow is the sequence of events that occur during a Voice over LTE call.
• Volte call is initiated by the user's device sending a SIP invite to the network

• The network responds with a SIP 180 ringing message to the user's device

• Once the call is answered, the network sends a SIP 200 OK message to the user's device

• Media is then established between the two devices using RTP protocol

• The call is terminated by either p
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Q2. What is IMS architecture ?
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IMS architecture refers to the design and structure of IBM's Information Management System software.
• IMS is a hierarchical database management system.

• It is used for transaction processing and data management.

• IMS architecture includes components such as IMS DB, IMS DC, and IMS TM.

• IMS DB is responsible for managing the database, while IMS DC handles online transaction processing.

• IMS TM is used for managing transactions ac...read more
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Q1. HCM basics, SQL, Tables
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Q1. Projects worked on
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Round 1: HackerRank Test (100 Minutes)
1 DSA question (medium level, binary search on answers)
20 technical questions (OS, DBMS, CN, and other CS fundamentals)
15 general aptitude and communication questions

Q1. What is static and dynamic binding in java
Ans. 
Static binding is resolved at compile time while dynamic binding is resolved at runtime in Java.
• Static binding is also known as early binding.

• Dynamic binding is also known as late binding.

• Example of static binding: method overloading.

• Example of dynamic binding: method overriding.
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Q2. Sort the linked list
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Sorting a linked list involves rearranging the nodes in a specific order.
• Iterate through the linked list and compare each node with the next one

• Use a sorting algorithm like bubble sort, merge sort, or quick sort to rearrange the nodes

• Update the pointers to connect the nodes in the sorted order
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Q3. What are JAR files?
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JAR files are Java Archive files that store multiple Java class files and related metadata.
• JAR files are used to package Java classes, resources, and metadata into a single file.

• They are commonly used for distributing Java libraries or applications.

• JAR files can be created using the 'jar' command in Java.

• They can also be executed using the 'java -jar' command.

• Example: mylibrary.jar contains all the class files and reso
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Q4. Singleton Class example
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A Singleton class is a class that can only have one instance created at a time.
• Singleton classes are often used for managing resources that should only have one instance, such as a database connection.

• To implement a Singleton class, you typically make the constructor private and provide a static method to access the single instance.

• Example: Singleton class for logging system where only one instance of the logger is nee
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Q5. CAP Theorem and its trade-offs
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CAP Theorem states that in a distributed system, it is impossible to simultaneously guarantee consistency, availability, and partition tolerance.
• Consistency: All nodes in the system have the same data at the same time.

• Availability: Every request gets a response, even if some nodes are down.

• Partition Tolerance: The system continues to operate despite network partitions.

• Trade-offs: In a distributed system, you can only h...read more
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Q6. Given 2–3 tables, wrote SQL queries based on joins and basic subqueries
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Q7. Explain wait() and signal()
Ans. 
wait() and signal() are functions used for synchronization in multithreading.
• wait() is used to make a thread wait until a certain condition is met

• signal() is used to wake up a waiting thread when the condition is met

• Example: Producer-consumer problem where producer signals consumer to consume when a new item is produced
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Q1. Design schema and draw ER diagram for Airport Management System
Ans. 
Airport Management System schema and ER diagram design
• Entities: Airport, Flight, Passenger, Employee, Schedule

• Attributes: Airport (code, name, location), Flight (number, destination, departure time), Passenger (name, age, contact info), Employee (ID, name, role), Schedule (flight number, date, time)

• Relationships: Airport has many Flights, Flight has many Passengers, Employee works at Airport, Flight has Schedule
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Q2. Normalize a given table; I normalized it up to 3NF.
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Identify the functional dependencies in the table

• Eliminate partial dependencies by breaking the table into multiple tables

• Eliminate transitive dependencies by further breaking down the tables

• Ensure each table has a primary key and all non-key attributes are fully functionally dependent on the primary key
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Q3. In-depth projects analysis
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Q1. Explain REST with examples
Ans. 
REST is an architectural style for designing networked applications
• REST stands for Representational State Transfer

• It uses standard HTTP methods like GET, POST, PUT, DELETE

• Resources are identified by URIs

• Data is transferred in JSON or XML format

• Example: GET request to 'https://api.example.com/users' to retrieve a list of users
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Q2. Differences between PUT and POST, and write POST method
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PUT is used to update or replace an existing resource, while POST is used to create a new resource.
• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request

• POST is not idempotent, meaning multiple identical requests may have different effects

• PUT is used to update an existing resource at a specific URI

• POST is used to create a new resource under a specific URI

• Example: PUT /users...read more
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Q3. Discussion about status codes
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Q4. Various HTTP requests and CRUD operations
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Q1. General questions
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Q1. About previous role taken
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Q1. What is UDA? Give an example from your projects.
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Q2. Give an example of a business rule from your project.
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General aptitude test with logical thinking and GK

General economics and finance

Q1. Easy good to go
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Q2. All about personal
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Python, java, ds, decision tree

Q1. What is list do?
Ans. 
List is a data structure that stores a collection of items in a specific order.
• Lists can be used to store items of the same or different data types.

• Items in a list can be accessed by their index.

• Lists can be modified by adding, removing, or updating items.

• Examples: shopping list, to-do list, list of students in a class.
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Q2. What is oops concept?
Ans. 
Object-oriented programming concept that focuses on organizing code into objects with properties and behaviors.
• Encapsulation: bundling data and methods that operate on the data into a single unit

• Inheritance: ability of a class to inherit properties and methods from another class

• Polymorphism: ability to present the same interface for different data types

• Abstraction: hiding the complex implementation details and showing
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