300+ Programmer Analyst Interview Questions and Answers

Interview questions for Programmer Analyst position

• C# is a programming language used for developing Windows applications

• OOPS concepts include inheritance, encapsulation, abstraction, and polymorphism

• Delegate is a type that represents references to methods with a specific parameter list and return type

• Polymorphism is the ability of an object to take on many forms. Types include compile-time and runtime polymorphism

• Out and ref keywords are used for passing arguments by referenc...read more

Stack is a data structure that follows LIFO (Last In First Out) principle. Converting a queue to stack requires dequeuing and pushing elements.

• Stack is a collection of elements with two main operations: push and pop.

• Push adds an element to the top of the stack, while pop removes the top element.

• Converting a queue to stack requires dequeuing all elements and pushing them onto a stack.

• Example: Queue: 1-2-3-4-5, Stack: 5-4-3-2-1

Use SQL JOIN to fetch common records from two tables.

• Use SQL JOIN to combine the two tables based on a common column (e.g. student ID).

• Select the columns you want to retrieve from both tables.

• Use the WHERE clause to filter out the records that are common between the two tables.

Structures are value types while classes are reference types.

• Structures are allocated on stack while classes are allocated on heap.

• Structures do not support inheritance while classes do.

• Structures cannot have explicit parameterless constructors while classes can.

• Structures are used for small data structures while classes are used for larger, more complex objects.

• Example of structure: struct Point { int x, y; }

• Example of class: class Person { string name; int age; }

RDBMS is a type of DBMS that uses a relational model to store and manage data.

• DBMS is a general term for any software that manages data

• RDBMS uses tables with rows and columns to store data

• RDBMS enforces relationships between tables using keys

• Example: MySQL, Oracle, SQL Server

• Example of a database: a customer database for a retail store

Program to check if a given string is palindrome or not using two pointers approach.

• Initialize two pointers, one at the start and one at the end of the string.

• Compare the characters at both pointers and move them towards each other until they meet.

• If all characters match, the string is a palindrome.

• If any character doesn't match, the string is not a palindrome.

Interview questions for Programmer Analyst role

• Explained automation framework used in the project

• Differentiated between Smoke, Sanity & Regression testing

• Answered scenario-based questions

• Discussed defect severity vs priority

• Explained BDD and Cucumber

• Answered basic questions on Selenium

Object storage stores data as objects while block storage stores data as blocks.

• Object storage is ideal for unstructured data like images, videos, and documents.

• Block storage is ideal for structured data like databases and virtual machines.

• Object storage uses unique identifiers to access data while block storage uses block addresses.

• Object storage is more scalable and cost-effective than block storage.

• Examples of object storage include Amazon S3 and Google Cloud Storage while...read more

To select uncommon records that do not match, use the NOT IN or NOT EXISTS clause in SQL.

• Use the NOT IN clause to select records that do not match a specific list of values.

• Use the NOT EXISTS clause to select records that do not have a matching record in a subquery.

• Example: SELECT * FROM table_name WHERE column_name NOT IN (value1, value2);

• Example: SELECT * FROM table1 WHERE NOT EXISTS (SELECT * FROM table2 WHERE table1.id = table2.id);

To change region of deployed AWS EC2 instance, create an AMI of the instance and launch it in the desired region.

• Create an AMI of the instance in the current region

• Copy the AMI to the desired region

• Launch the copied AMI in the desired region

The question asks for SQL queries for joining three tables, sorting in descending order in C program, and printing 'Hello, World!' in C.

• To join three tables in SQL, use the JOIN keyword with appropriate conditions.

• To sort in descending order in C, use the qsort() function with a custom comparison function.

• To print 'Hello, World!' in C, use the printf() function with the desired message.

Availability zones and regions are geographical locations in AWS data centers.

• Availability zones are isolated locations within a region that contain their own power, cooling, and networking infrastructure.

• Regions are separate geographic areas that consist of two or more availability zones.

• Each region is completely independent and isolated from the others.

• Customers can deploy resources in multiple availability zones to achieve high availability and fault tolerance.

• Examples of ...read more

Calculate the angle between the hour and minute hands of a clock based on given time.

• Each hour represents 30 degrees (360 degrees / 12 hours).

• Each minute represents 6 degrees (360 degrees / 60 minutes).

• Hour hand moves 0.5 degrees per minute (30 degrees / 60 minutes).

• Formula: Angle = |(30*hour + 0.5*minutes) - (6*minutes)|.

• Example: For 3:15, Angle = |(30*3 + 0.5*15) - (6*15)| = |97.5 - 90| = 7.5 degrees.

To create a stored procedure that returns a table, use SELECT statement within the procedure.

• Create a stored procedure using CREATE PROCEDURE statement.

• Within the procedure, use SELECT statement to query the data and return the table.

• Specify the columns to be returned in the SELECT statement.

• Execute the stored procedure to retrieve the table data.

S3 is a cloud-based object storage service provided by Amazon Web Services (AWS).

• S3 stands for Simple Storage Service.

• It allows users to store and retrieve data from anywhere on the web.

• S3 offers different storage classes such as Standard, Infrequent Access, and Glacier.

• Standard is for frequently accessed data, Infrequent Access is for data that is accessed less frequently, and Glacier is for long-term archival storage.

• S3 also provides features like versioning, lifecycle poli...read more

Object oriented programming is a programming paradigm that focuses on objects and their interactions to solve problems.

• Encapsulation: bundling data and methods that operate on that data within a single unit.

• Inheritance: creating new classes from existing ones, inheriting their properties and methods.

• Polymorphism: the ability of objects to take on many forms, allowing them to be used in different ways.

• Abstraction: hiding implementation details and only showing the necessary in...read more

Questions on ref, out, array shifting, OOPS, web API, .NET, and MVC for Programmer Analyst role.

• ref and out are used to pass arguments by reference in C#

• Array program can be implemented using a loop to shift elements based on input

• OOPS concepts include inheritance, encapsulation, polymorphism, and abstraction

• Web API is a framework for building HTTP services

• .NET is a software framework for building Windows applications

• MVC is a design pattern used in software engineering

The count of rows returned after a join depends on the type of join and the matching records in the tables.

• Inner Join: Returns rows with matching values in both tables. Example: If Table A has 5 rows and Table B has 3 matching rows, result = 3.

• Left Join: Returns all rows from the left table and matched rows from the right table. Example: If Table A has 5 rows and Table B has 2 matching rows, result = 5.

• Right Join: Returns all rows from the right table and matched rows from th...read more

OOPS stands for Object-Oriented Programming System.

• OOPS is a programming paradigm that focuses on objects and their interactions.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Encapsulation is the process of hiding implementation details from the user.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects to take on multiple forms or behaviors.

• Examples of OOPS languages include Java, C++, Python, and Ruby.

No, I would not apply the brake suddenly.

• I would try to maintain control of the car by steering it to the side of the road or a safe area.

• Applying the brake suddenly could cause the car to skid or lose control.

• I would also turn on the hazard lights to alert other drivers of the situation.

• Once the car is safely stopped, I would assess the damage and call for assistance if necessary.

Java, HTML, Python concepts and code implementation for Programmer Analyst interview.

• Object oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• Data structures are ways of organizing and storing data in a computer so that it can be accessed and modified efficiently.

• Java is a high-level, class-based, object-oriented programming language that is designed to have as few im...read more

Comparison of two tables with id attribute and null values.

• Both tables have the same id attribute.

• Table a has null values for the third and fourth rows.

• Table b has a null value for the third row and a different value for the fifth row.

Inheritance is a way to create a new class from an existing class while Abstract Class is a class that cannot be instantiated.

• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Abstract Class is used as a blueprint for other classes to inherit from.

• An Abstract Class can have abstract methods that must be implemented by its subclasses.

• Inheritance can create a hierarchy of classes with shared properties and methods.

• An Abstract Class cannot be inst...read more

To find the initial number of oranges, we reverse the process of giving away half three times from a total of 9 oranges.

• Start with the final count of oranges: 9.

• After the third giving away, she had 9 oranges, which means she had 18 before giving half away.

• Before the second giving away, she had 18 oranges, which means she had 36 before giving half away.

• Before the first giving away, she had 36 oranges, which means she originally had 72 oranges.

Flexibility can bring advantages like adaptability and creativity, but can also lead to indecisiveness and lack of focus.

• Flexibility allows for adaptability to changing situations and creativity in problem-solving.

• It can also lead to indecisiveness and lack of focus if not balanced with structure and clear goals.

• Advantages include increased resilience, better teamwork, and improved communication.

• Disadvantages include potential for burnout and difficulty in prioritizing tasks....read more

To determine a bug, identify the unexpected behavior and compare it to the expected behavior. After fixing the bug, the next step is to close the story.

• To determine a bug, reproduce the unexpected behavior and compare it to the expected behavior.

• Use debugging tools to identify the root cause of the bug.

• After fixing the bug, test the fix to ensure it resolves the issue.

• Once the fix is verified, close the story in the project management tool.

Sealed classes cannot be inherited while partial classes allow a class to be divided into multiple files.

• Sealed classes prevent inheritance and are used to restrict the class hierarchy.

• Partial classes allow a class to be divided into multiple files for easier management.

• Sealed classes are marked with the 'sealed' keyword while partial classes are marked with the 'partial' keyword.

• Example of sealed class: 'sealed class MyClass {}'

• Example of partial class: 'public partial class...read more