Amvotech Solutions Interview Questions and Answers for Freshers

Q1. DS Algo, Backend and DB
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Q2. Stack(DS) question and DB based questions
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Q3. Scaling (Horizontal, Vertical) with use cases
Ans. 
Scaling refers to increasing capacity of a system. Horizontal scaling adds more machines, while vertical scaling adds more resources to a machine.
• Horizontal scaling involves adding more machines to a system to increase capacity

• Vertical scaling involves adding more resources to a machine to increase capacity

• Use cases for horizontal scaling include handling increased traffic or adding redundancy

• Use cases for vertical sca...read more
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Q1. Asked different variety of puzzles
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We have given 12 puzzles on hackerearth based on probability and statistics and have to solve in 45 minutes

Q1. There is a biased dice with the probability of 1 and 2 is 25% each. Find the probability of even number.
Ans. 
The probability of rolling an even number on a biased dice with 25% chance for 1 and 2 is 50%.
• The biased dice has a 25% chance for rolling a 1 and a 25% chance for rolling a 2, totaling 50% for odd numbers.

• Since there are only two odd numbers on a dice (1 and 2), the probability of rolling an even number is 50%.

• The probability of rolling an even number on a standard dice is 50% as well, since there are 3 even numbers o
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Q2. What is the pdf and pmf?
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PDF stands for Probability Density Function and PMF stands for Probability Mass Function.
• PDF is used for continuous random variables while PMF is used for discrete random variables.

• PDF represents the probability distribution of a continuous random variable.

• PMF represents the probability distribution of a discrete random variable.

• Example: PDF can be used to calculate the probability of a random variable falling within a...read more
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There were 10 questions and we were given 30 mins to solve them , questions were medium to hard level mcq

Question based on Probability , Logic (Puzzles) , Statistics

Q1. Question based on Logic(Puzzles) , mostly Statistics
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Q2. Explain Anova Test with real time example
Ans. 
Anova Test is used to compare means of three or more groups.
• Anova stands for Analysis of Variance

• It is used to determine if there is a significant difference between the means of three or more groups

• It compares the variance within groups to the variance between groups

• Real-time example: An Anova test can be used to compare the average salaries of employees in different departments of a company
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General and basic data structure question

Q1. Coding over the video call
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Q2. Java programs for strings , palindrome etc
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Java programs for strings, palindrome, etc.
• Use the StringBuilder class to manipulate strings efficiently.

• To check if a string is a palindrome, compare it with its reverse.

• To count the occurrences of a substring in a string, use the indexOf method in a loop.

• To split a string into an array of substrings, use the split method.
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Q3. Projects questions on which you have worked
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Q4. Explanation skill will also be considered
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Q1. There was simple DSA question ,
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