NITYA Software Solutions IOS Developer Interview Questions and Answers

Q1. Oops Concept in c#
Ans. 
Oops concept in C# refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation hides the internal state of an object and only exposes necessary information.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Abstraction focuses on...read more
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Q2. Manage and unmanaged code
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Q3. Dependency injection
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Q4. Filter and its type
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A filter is a tool used to select specific data from a larger set based on certain criteria.
• Filters can be used in various programming languages and databases to narrow down results.

• Types of filters include text filters, numeric filters, date filters, and custom filters.

• Examples of filters include WHERE clause in SQL, filter() function in Python, and filter() method in JavaScript.
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Q5. View in sql server
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A view in SQL Server is a virtual table that contains the result set of a SELECT statement.
• Views are used to simplify complex queries by storing them as a virtual table.

• Views can be used to restrict access to specific columns or rows of a table.

• Views can be created using the CREATE VIEW statement.

• Example: CREATE VIEW vwEmployee AS SELECT FirstName, LastName FROM Employees;
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Q6. Primary key vs unique key
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Primary key uniquely identifies a record in a table, while unique key ensures uniqueness but allows null values.
• Primary key enforces uniqueness and not null constraint on a column

• Primary key can consist of multiple columns

• Unique key enforces uniqueness but allows null values

• Unique key can be applied to multiple columns as well
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Q7. Procedure vs function
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Procedures are a set of instructions that perform a specific task, while functions return a value after performing a task.
• Procedures do not return a value, while functions do.

• Functions can be called within expressions, while procedures cannot.

• Functions are more versatile and reusable compared to procedures.
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Q8. Trigger in sql server
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A trigger in SQL Server is a special type of stored procedure that automatically executes when certain events occur in a database.
• Triggers can be used to enforce business rules, audit changes, or replicate data.

• There are two main types of triggers in SQL Server: DML triggers and DDL triggers.

• DML triggers fire in response to data manipulation language (DML) events like INSERT, UPDATE, and DELETE.

• DDL triggers fire in res...read more
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Q9. Interface in c#
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Interface in C# is a reference type that defines a contract for classes to implement certain methods and properties.
• Interfaces cannot have implementation, only method signatures and properties.

• Classes can implement multiple interfaces in C#.

• Interfaces are used to achieve abstraction and multiple inheritance in C#.

• Example: public interface IShape { void Draw(); }

• Example: public class Circle : IShape { public void Draw()...read more
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Q10. Abstract class vs interface
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Abstract class is a class that can have both abstract and non-abstract methods, while interface is a contract that defines methods that must be implemented by a class.
• Abstract class can have constructor, fields, and methods, while interface cannot have any implementation.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used when some common functionality needs ...read more
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Q11. Partial view in.det
Ans. 
Partial view in ASP.NET MVC allows reusing common UI elements across multiple views.
• Partial views are like reusable components that can be included in multiple views

• They help in reducing code duplication and improving maintainability

• Partial views are rendered using Html.Partial or Html.RenderPartial methods
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Q12. Method overloading vs overriding
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Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is redefining a method in a subclass with the same name and parameters as in the superclass.
• Method overloading involves multiple methods with the same name but different parameters.

• Method overriding involves redefining a method in a subclass with the same name and parameters as in the superclas...read more
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Q13. Union vs union all
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Union combines and removes duplicates, while union all combines all rows including duplicates.
• Union removes duplicates, while union all includes duplicates.

• Union is slower as it has to remove duplicates, while union all is faster.

• Use union when you want to remove duplicates, use union all when duplicates are acceptable.
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Q14. Foreign key In sql
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Foreign key in SQL is a field in a table that links to a primary key in another table, enforcing referential integrity.
• Foreign key constraints ensure data consistency between related tables

• Foreign key values must exist in the referenced table's primary key column

• Foreign key can be used to establish relationships between tables
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Q15. Constructor in c#
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Constructor in C# is a special type of method that is automatically called when an instance of a class is created.
• Constructors have the same name as the class and do not have a return type.

• They can be used to initialize the data members of the class.

• Constructors can be overloaded to have multiple versions with different parameters.

• Example: public class Person { public Person(string name) { this.Name = name; } }
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Q1. Tell me about your project
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Q2. Salary discussion
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A few questions were related to the PHP language, JavaScript, and Object-Oriented Programming concepts. Few mathematical problems were also involved.

Q1. Explain OOPS Programming.
Ans. 
OOPS 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.
• OOPS stands for Object-Oriented Programming System

• It focuses on creating objects that interact with each other to solve complex problems

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPS

• Example: Inheritance allows a class to inherit...read more
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Q2. How do you embed PHP code in an HTML file?
Ans. 
PHP code can be embedded in an HTML file using PHP opening and closing tags.
• Use <?php ?> tags to enclose PHP code within an HTML file

• Ensure that the file has a .php extension for the server to process PHP code

• Example: <html><body><?php echo 'Hello World'; ?></body></html>
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Q3. What is the difference between echo and print in PHP?
Ans. 
Echo and print are both used to output data in PHP, but echo is slightly faster and can take multiple parameters while print can only take one.
• Echo is a language construct, while print is a function.

• Echo does not return a value, while print returns 1.

• Echo can take multiple parameters separated by commas, while print can only take one parameter.

• Echo is slightly faster than print.
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Q1. How do you handle feedback from Peers/ Mentors?
Ans. 
I value feedback from peers/mentors and use it to improve my skills and performance.
• I actively seek feedback from peers/mentors to identify areas for improvement.

• I listen attentively to feedback and take constructive criticism positively.

• I use feedback to make necessary adjustments and enhance my work.

• I appreciate feedback as a valuable tool for personal and professional growth.
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Q2. How do you keep updated yourself with the latest technologies?
Ans. 
I keep updated by attending tech conferences, online courses, reading tech blogs, and participating in hackathons.
• Attending tech conferences such as Google I/O or WWDC

• Taking online courses on platforms like Coursera or Udemy

• Reading tech blogs like TechCrunch or Hacker Noon

• Participating in hackathons to learn and collaborate with other developers
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Q3. Why should we select you for this position?
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I have a strong background in software development with a proven track record of delivering high-quality projects on time.
• Extensive experience in programming languages such as Java, Python, and C++

• Strong problem-solving skills and ability to work well in a team

• Previous projects include developing a mobile app for a startup company and implementing new features for a large-scale web application
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Q1. What types of projects have you worked on?
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Q2. They asked questions specific to technology.
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Strong appitude knowledge is required.

Q1. String , arrays, oops
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Q1. Strecture of sql statement
Ans. 
SQL statements are used to interact with databases by performing operations like querying, updating, and deleting data.
• SQL statements are made up of keywords like SELECT, INSERT, UPDATE, DELETE, etc.

• They are structured in a specific order, with clauses like WHERE, ORDER BY, GROUP BY, etc.

• Tables are referenced using their names, and conditions are specified to filter data.

• Joins can be used to combine data from multiple ...read more
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JavaScript, React Js

Q1. How many years of relevant experience
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Q2. What is your current CTC
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Q3. What is your Expectation
Ans. 
I expect a challenging role that fosters growth, collaboration, and innovation while allowing me to contribute meaningfully to projects.
• Opportunities for professional development, such as workshops or courses.

• A collaborative team environment where ideas are shared openly.

• Involvement in innovative projects that push the boundaries of technology.

• Clear career progression paths and regular feedback on performance.
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Q1. What is your Strength
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Q2. What is weakness
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One weakness I have is that I can be overly critical of my own work, which can sometimes lead to self-doubt.
• I tend to overthink things and can be indecisive at times

• I have a tendency to take on too many tasks at once, leading to feeling overwhelmed

• I struggle with public speaking and often get nervous in front of large groups
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Q3. What is your Goal
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Q1. What's your approach to test planning and strategy
Ans. 
I prioritize collaboration, risk assessment, and continuous improvement in test planning and strategy.
• Define clear objectives: Establish what success looks like for the project, e.g., 95% test coverage.

• Involve stakeholders: Collaborate with developers, product owners, and users to gather requirements and expectations.

• Risk assessment: Identify high-risk areas and prioritize testing efforts accordingly, such as focusing ...read more
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Q2. How do you manage and track QA metrics?
Ans. 
I manage QA metrics through systematic tracking, analysis, and reporting to ensure quality and continuous improvement.
• Define key metrics: Examples include defect density, test coverage, and pass/fail rates.

• Use tools: Implement tools like JIRA or TestRail for tracking defects and test cases.

• Regular reporting: Create dashboards for real-time visibility of QA metrics to stakeholders.

• Analyze trends: Review historical data ...read more
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Q1. Difference between absolute xpath and relative xpath
Ans. 
Absolute xpath specifies the complete path from the root element to the desired element, while relative xpath specifies the path relative to the current element.
• Absolute xpath starts with a single forward slash (/) and is more specific.

• Relative xpath starts with a double forward slash (//) and is more flexible.

• Absolute xpath is more prone to breaking if the structure of the page changes.

• Relative xpath is easier to main...read more
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