Swastid Engineering Interview Questions, Process, and Tips

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Example Question (Numerical Ability):

Question:
If 15% of a number is 45, what is 30% of that number?

Solution:

1. Find the number:
If 15% of a number is 45, then



\text{Number} = \frac{45}{0.15} = 300.

2. Calculate 30% of the number:
Now, 30% of 300 is



0.30 \times 300 = 90.

Answer:
30% of the number is 90.


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Additional Example (Simple Interest):

Question:
A bank offers a simple interest rate of 5% per annum on a deposit of Rs.20,000. What will be the interest earned in 3 years?

Solution:

1. Use the simple interest formula:



\text{Simple Interest} = \frac{P \times R \times T}{100}

= Principal amount = Rs.20,000

= Rate of interest = 5%

= Time = 3 years


2. Calculate the interest:



\text{Interest} = \frac{20000 \times 5 \times 3}{100} = 3000.

Answer:
The interest earned in 3 years is Rs. 3000.

1. Quantitative Aptitude

Q: A sum of ₹10,000 is invested at 10% per annum simple interest. What is the interest after 3 years?
A: Interest = (P × R × T) / 100 = (10,000 × 10 × 3) / 100 = ₹3,000

2. Reasoning Ability

Q: If A is the father of B, but B is not the son of A, what is B’s relation to A?
A: Daughter

3. English Language

Q: Choose the correct sentence:
a) She don’t like coffee.
b) She doesn’t like coffee.
A: b) She doesn’t like coffee.

4. General Awareness (Banking GK)

Q: What does RBI stand for?
A: Reserve Bank of India

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Example Question (Numerical Ability):

Question:
A bank offers a simple interest rate of 6% per annum. If a customer deposits Rs. 25,000 for 4 years, what is the total simple interest earned over that period?

Solution:

1. Identify the formula for Simple Interest (SI):



\text{SI} = \frac{P \times R \times T}{100}

is the principal (Rs. 25,000)

is the rate of interest (6%)

is the time period (4 years)


2. Substitute the values into the formula:



\text{SI} = \frac{25000 \times 6 \times 4}{100}

3. Calculate the interest:



\text{SI} = \frac{25000 \times 24}{100} = \frac{600000}{100} = 6000.

Answer:
The total simple interest earned over 4 years is Rs. 6,000.


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Additional Example (Logical Reasoning):

Question:
In a sequence of numbers representing daily bank transactions, the amounts follow an arithmetic progression: 105, 115, 125, ... What will be the 8th transaction amount?

Solution:

1. Identify the first term and common difference:

First term,

Common difference,



2. Use the formula for the nth term of an arithmetic progression:



a_n = a_1 + (n - 1)d

3. Substitute :



a_8 = 105 + (8 - 1) \times 10 = 105 + 70 = 175.

Answer:
The 8th transaction amount is 175.

Q1. What are some of the Design Patterns you have worked with?
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Q2. What is your approach for a issue you came to know happened in Production.
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Q3. If given a chance to lead a team will you take it up as a challenge of not how would you tackle it?
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Q4. Are you able to work under pressure. How do you manage?
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Q5. What do you understand by SOLID principle? Why do you think it is important.
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Q6. Please solve the coding question provided ( a moderately difficult coding question provided). Help understand your approach and why you chose same. Explain edge caes if possible.
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The aptitude test will be conducted online.

Q1. Can you tell me about yourself?
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Q2. What is the thread lifecycle in programming?
Ans. 
Thread lifecycle in programming refers to the various stages a thread goes through from creation to termination.
• Thread creation: A new thread is created using the 'Thread' class or by implementing the 'Runnable' interface.

• Thread start: The thread transitions from 'new' to 'runnable' state when 'start()' method is called.

• Thread running: The thread is executing its task in the 'running' state.

• Thread waiting: The thread c...read more
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Q3. What is the purpose of collections in Java?
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Collections in Java are used to store and manipulate groups of objects.
• Collections provide a way to store, retrieve, and manipulate groups of objects in Java.

• They offer various data structures like lists, sets, maps, etc. for different purposes.

• Collections framework includes interfaces like List, Set, Map, and classes like ArrayList, HashSet, HashMap.

• Collections provide methods for sorting, searching, and iterating ove
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Q4. What are the key concepts of Object-Oriented Programming (OOP)?
Ans. 
Key concepts of OOP include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability for objects to be treated as instances of their parent class or their own class.

• Abstraction: Hiding complex implementation details and show...read more
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Q5. What are some real-life examples that illustrate the concepts of Object-Oriented Programming (OOP)?
Ans. 
Real-life examples of Object-Oriented Programming include modeling a car as an object with properties and methods.
• Modeling a car as an object with properties like color, make, model, and methods like start, stop, accelerate

• Creating a banking system where accounts are objects with properties like balance and methods like deposit, withdraw

• Developing a video game where characters are objects with properties like health, p
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Q6. Write a code for matrix multiplication?
Ans. 
Matrix multiplication code implementation in C++
• Declare two matrices A and B of appropriate sizes

• Iterate through rows and columns to calculate each element of the resulting matrix C

• Use nested loops for efficient computation

• Ensure the number of columns in matrix A is equal to the number of rows in matrix B

• Example: A = {{1, 2}, {3, 4}}, B = {{5, 6}, {7, 8}}, C = A*B = {{19, 22}, {43, 50}}
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Q7. Could you provide details about your academic project?
Ans. 
Designed and implemented a smart irrigation system using IoT technology.
• Researched various sensors and actuators suitable for monitoring soil moisture levels and controlling water flow.

• Developed a mobile application to remotely monitor and control the irrigation system.

• Implemented machine learning algorithms to optimize water usage based on weather forecasts and plant requirements.
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Q1. Basic questions
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Q1. SQL medium questions to be done in Pyspark parallely.
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Q2. Datafactory and other azure resources scenario based
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Q1. Project discussion with the team lead and manager
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Q1. Technical and general discussion
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A sequence was provided: 4181, 2684, 1597, 987, 610.
first 2 are given and write code for other value calculation using java 8

The second question required writing a reverse of a palindrome using both Java 8 streams. I was able to successfully write both and clear the first round.

Q1. Interviewer was himself not knowing anything as it was walkin drive he was sitting infront of me and checking questions on phone Introduction that he inturrepted in between when I was introducing myself
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Q2. What are the features of Java 17, specifically related to sealed classes, including their syntax and necessity, along with the potential errors encountered when invoking a sealed class?
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Q3. Java 8 feathers stream api, functional interface, Intermittent operator ,Ternary operator, Prediction,Bi predicate. Answered all successfully
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Q4. Draw low level design of implementation of notify me if item is back in stock in a ecommerce application
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Q5. All design patterns which I know. Asked me to implement adapter pattern on paper
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Q6. Then given a problem that concurrent way perform operation on excell to decrease the response time
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Q1. What is your experience and current compensation (CTC)?
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Q2. What are your communication skills?
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Q1. What is the accounts payable cycle?
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Q2. Miro processing
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Q1. What are the implications of invoice deductions related to disputes?
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Q2. What is the process of evolving reconciliation?
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Q1. Current CTC, Expected CTC, Notice Period, Skill set
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Q2. Open for Fixed term hire? Open for working from client location at Gurgaon? (3 days from office)
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Q1. Introduction, Current role and responsibilities
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Q2. List out the achievements in current project, Tools used
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Q3. Pilot vs Beta testing. How can newly developed functionality be tested via automation rather doing it manually?
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Q4. Primary key vs Unique key in SQL, Query to find row having last id in sql
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Q5. Explain Software Testing Life Cycle, Defect Life Cycle
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Q6. What's the meaning of 303 status code in API? Put vs Delete method in API What is 3 point estimation technique in Agile?
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Q7. What kind of links and labels can be tagged to a bug in jira?
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Q8. Have you done shell scripting? What does grep, href commands do in unix?
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Q9. As a lead, how would you resolve conflict with a team member? As a lead, if you are given plenty of tasks to be completed with in a limited time frame. What would be your approach in doing them?
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Q10. Open for relocating to Bangalore and working from client's office? (with no relocation bonus) Open for working in night / rotational shift? (with no additional compensation) Open for working in long exten...read more
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Q1. What is a polymorphism?
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Q2. Can you explain difference between == and euqals()?
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Q3. What is dependency inversion?
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Q4. Can you explain ACID?
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Q5. Please tell me about isolation levels
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