Arkenea Technologies Software Tester Interview Questions and Answers

Easy aptitude test. General logical question and few mathematical.

Q1. As I was fresher they asked simple questions like OOP concepts and Java features
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Q1. Normal HR questions.
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Q1. Explain what is LINQ?
Ans. 
LINQ (Language Integrated Query) is a feature in C# that allows for querying data from different data sources using a uniform syntax.
• LINQ allows for querying data from collections, databases, XML, and more.

• It provides a set of standard query operators like Where, Select, OrderBy, etc.

• LINQ queries are written in a declarative syntax similar to SQL.

• Example: var result = from num in numbers where num % 2 == 0 select num;
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Q2. What is Diamond structure problem and how can it be resolved
Ans. 
Diamond structure problem occurs when a class inherits from two classes that have a common base class.
• Diamond structure problem is a common issue in multiple inheritance where a class inherits from two classes that have a common base class.

• This can lead to ambiguity in the inheritance hierarchy and can cause issues with method overriding and variable access.

• One way to resolve the diamond structure problem is by using v...read more
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Q3. Different types of joins in SQL
Ans. 
Different types of joins in SQL include inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table
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Q4. Design patterns
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Q1. All basic python questions
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Q1. Design patterns
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Q2. Singleton pattern
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Q1. Oops concept is there
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Q2. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types.

• Examples include method overloading and method overriding in object-oriented programming.
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2 simple questions were asked on DSA

Q1. Which Angular version have you used
Ans. 
I have used Angular version 8 and 9 in my previous projects.
• Used Angular 8 for a project that required advanced routing and lazy loading features

• Upgraded to Angular 9 to take advantage of improved performance and Ivy rendering engine
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Q2. Pipes in Angular
Ans. 
Pipes in Angular are used for transforming data in templates.
• Pipes are used to format data before displaying it in the view.

• Angular provides built-in pipes like date, currency, uppercase, lowercase, etc.

• Custom pipes can also be created for specific formatting needs.

• Pipes can be chained together for multiple transformations.

• Example: {{ birthday | date:'MM/dd/yyyy' }} will format the birthday date.
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2 technical questions

Q1. Java collections framework
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Q2. Strings in Java
Ans. 
Strings in Java are sequences of characters used to store and manipulate text data.
• Strings in Java are immutable, meaning their values cannot be changed once they are created.

• String objects can be created using the 'new' keyword or by directly assigning a string literal.

• Common string operations in Java include concatenation, substring extraction, and comparison.
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