Ensim Corporation Interview Questions and Answers

It included mcqs and multiple coding questions.

Q1. Yours technical skillls related questions
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Q2. Managerial questions
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Starts with an online assessment test on HackerRank. Expect a LeetCode Medium question most of the time, mostly created by HackerRank.

Q1. LC medium related to dynamic programming.
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Q2. LC easy related to heaps.
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Q1. LC medium-hard, don't remember the category.
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Q1. This was a design round. You can expect to be asked to design the DB schema and API endpoints for a well-known use case. Interviewer was super helpful and receptive throughout. While getting to an agreeabl...read more
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Q1. Hiring manager round. Mostly discussions about your profile, discussion on past projects from your resume. You can do well in this round if you know your basics and can explain your projects to some depth....read more
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Q1. Generate a Dataframe
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Q1. Tell me about your Project and why you use this tech for this project.
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Q2. Find the mid element in the link list.
Ans. 
To find the mid element in a linked list, use two pointers - one moving at double the speed of the other.
• Initialize two pointers, slow and fast, both pointing to the head of the linked list.

• Move the slow pointer by one step and the fast pointer by two steps until the fast pointer reaches the end of the list.

• The element pointed to by the slow pointer at this point is the mid element of the linked list.
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Q1. Find frequency of integer in array
Ans. 
Calculate the frequency of a specific integer in an array of strings.
• Iterate through the array and use a hashmap to store the frequency of each integer.

• Return the frequency of the specified integer from the hashmap.
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Q2. Node js project explanation and evaluation
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Node.js is built on Chrome's V8 JavaScript engine.

• It uses an event-driven, non-blocking I/O model.

• Node.js is commonly used for building server-side applications and APIs.

• It has a large ecosystem of libraries and frameworks, such as Express and Socket.io.
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Q1. What is dns port no?
Ans. 
DNS port number is 53.
• DNS port number is used for DNS queries and responses.

• It is a well-known port number, which is 53.

• DNS uses both TCP and UDP protocols on port 53.
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Q2. What is ssh port no?
Ans. 
SSH port number is 22.
• SSH port number is used for secure communication over a network.

• Default port number for SSH is 22.

• Port number can be changed for security reasons.

• Example: ssh user@hostname -p 2222
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Q3. What brust force attack?
Ans. 
A brute force attack is a trial-and-error method used by hackers to crack passwords or encryption by systematically trying all possible combinations.
• Brute force attacks are time-consuming but effective against weak passwords.

• Hackers use automated tools to try all possible combinations until the correct one is found.

• Examples include trying all possible 4-digit PIN codes or dictionary words as passwords.

• Strong passwords ...read more
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Q1. Tell me about your self?
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Q1. First round is the aptitude round with basic aptitude questions
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Q2. Second ruond was the puzzles 1. a girl is dreaming that she is surrounded by 13 candies in circular way now she eats every 13th candy in every iteration. out of 13 there are 12 red and 1 white candies. now...read more
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Q3. Third round was coding round in which code was given and we had to write what is the purpose of the anonymous functions presend in the code.
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Q4. In the final round it is an interview.
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