DLI Systems Software Quality Analyst Interview Questions and Answers

Q1. What is the difference between an abstract class and an interface in object-oriented programming?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have method implementations, while interface cannot.

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

• Interfaces are used to define contracts for classes to implement, while abstract classes are used to provide a common base for subclasses.

• Example: Abstr...read more
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Q2. Abstract classes can have implemented methods; interfaces can only have declarations (before JAVA 8).
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Q1. What is the implementation of Merge Sort in Java?
Ans. 
Merge Sort is a divide and conquer algorithm that divides the input array into two halves, recursively sorts them, and then merges the sorted halves.
• Divide the input array into two halves

• Recursively sort the two halves

• Merge the sorted halves back together
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Q2. What is the implementation of the Quick Sort algorithm in Java?
Ans. 
Quick Sort is a popular sorting algorithm that uses a divide-and-conquer approach to sort elements in an array.
• Choose a pivot element from the array.

• Partition the array into two sub-arrays: elements less than the pivot and elements greater than the pivot.

• Recursively apply the same process to the sub-arrays.

• Combine the sorted sub-arrays to get the final sorted array.
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Q1. Design tinyurl system design
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Q1. Basic all type questions
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Q1. Project related and technology se related
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First round is apti when in placement

Too hard all are dsa questions

1.30
Basic profit/loss,percentages questions

Q1. 1 hr Asked about closures, hoisting, map, hash
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Q2. Closures and scopes
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Q3. Dsa 2 sum problem
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Q4. Projects and basicjs
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Q1. Basic related to location, timings
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Coding assessment in Code signal which is vedio proctored

Q1. Design a loan application system
Ans. 
Design a loan application system
• Collect applicant information such as personal details, employment history, and financial information

• Include a credit check process to assess applicant's creditworthiness

• Implement a system for loan approval/rejection based on set criteria

• Provide options for different types of loans and repayment plans

• Ensure security measures are in place to protect applicant's sensitive information
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Bank account creation, deposit money, withdraw money

Q1. Question around work experience and how a particular scenario or situation is handled
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Suggest system cost optimization based on given data set

Q1. What is STLC? What is defect life cycle?
Ans. 
STLC stands for Software Testing Life Cycle. Defect life cycle is the process of identifying, reporting, and resolving defects in software.
• STLC is a series of activities performed during the testing process.

• It includes test planning, test design, test execution, and test closure.

• Defect life cycle consists of various stages like identification, logging, triaging, fixing, retesting, and closure.

• Defects are reported, trac...read more
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Q2. What are assess modifiers in java?
Ans. 
Access modifiers in Java control the visibility and accessibility of classes, methods, and variables.
• There are four access modifiers in Java: public, private, protected, and default.

• Public access modifier allows unrestricted access from any class.

• Private access modifier restricts access to only within the same class.

• Protected access modifier allows access within the same package or subclasses.

• Default access modifier (n...read more
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Q3. What is garbage value?
Ans. 
Garbage value is an unpredictable or random value that is stored in a variable when it is not assigned a specific value.
• Garbage values occur when a variable is declared but not initialized.

• They can be caused by uninitialized variables, memory leaks, or accessing uninitialized memory.

• Garbage values can lead to unexpected behavior and bugs in software.

• Example: int x; // x may contain a garbage value until assigned a spec
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