China International Travel Service Corporation Interview Questions and Answers

Q1. Design a minimum stack that supports the following operations: push, pop, top, and retrieving the minimum element in constant time.
Ans. 
Design a stack that supports push, pop, top, and retrieving minimum element in constant time.
• Use two stacks - one to store the actual elements and another to store the minimum values encountered so far

• When pushing an element, check if it is smaller than the current minimum and if so, push it to the minimum stack

• When popping an element, check if it is the current minimum and if so, pop from the minimum stack as well

• Top ...read more
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Q2. Given an integer array of size n, find the maximum circular subarray sum. A circular array means that the end of the array connects back to the beginning. The solution should consider both the non-circular...read more
Ans. 
Find the maximum circular subarray sum in an integer array.
• Calculate the non-circular maximum subarray sum using Kadane's algorithm.

• Calculate the circular maximum subarray sum by subtracting the minimum subarray sum from the total sum.

• Compare the non-circular and circular maximum subarray sums to get the overall maximum sum.
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Q1. JWT security and testing methodologies
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Q2. Same-origin policy cors and in depth level
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Q3. General security concepts in manual code review
Ans. 
Manual code review involves analyzing code for security vulnerabilities using general security concepts.
• Identifying potential security vulnerabilities in the code

• Checking for input validation to prevent injection attacks

• Reviewing authentication and authorization mechanisms

• Ensuring secure coding practices are followed

• Looking for sensitive data exposure
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Q1. General Security concepts
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Q2. Scenario based questions in terms of dealing with dev teams
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Q1. What do you know about travelling
Ans. 
Travelling involves moving from one place to another for various purposes such as leisure, business, or exploration.
• Travelling can be for leisure, business, exploration, or visiting family and friends.

• It allows individuals to experience new cultures, cuisines, and landscapes.

• Travelling can be domestic or international, by various modes of transportation like planes, trains, cars, or ships.

• It can involve staying in hote...read more
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Q2. What do you know about kesari travels
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Q1. Tell me about yourself
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Q2. What is ratio analysis
Ans. 
Ratio analysis is a financial tool used to evaluate a company's performance by analyzing relationships between financial variables.
• Ratio analysis involves comparing different financial ratios to assess a company's financial health and performance.

• It helps in identifying trends, strengths, weaknesses, and potential areas of improvement.

• Common ratios used in ratio analysis include liquidity ratios, profitability ratios, ...read more
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Q1. Tell about your self
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I am a detail-oriented back end executive with experience in managing data, optimizing processes, and ensuring efficient operations.
• Experienced in handling data management tasks

• Skilled in optimizing processes for efficiency

• Proficient in ensuring smooth operations of back end systems
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Q2. Read these pehragraph then I will ask questions regarding this pehragraph
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Q1. What is your highest qualification?
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Q2. How year experience do you have?
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Q1. What is the JIT systems?
Ans. 
JIT systems stands for Just-In-Time systems, which is a production strategy aimed at reducing waste and improving efficiency by receiving goods only as they are needed in the production process.
• JIT systems involve receiving goods only as they are needed in the production process

• Helps in reducing inventory costs and waste

• Requires close coordination with suppliers to ensure timely delivery of materials

• Popularized by comp
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Q2. What is FIFO method?
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FIFO stands for First In, First Out. It is a method used for inventory management where the oldest stock is sold first.
• FIFO ensures that the oldest inventory items are used or sold first before the newer ones.

• This method is commonly used in industries like retail, food, and manufacturing.

• For example, if a store receives new stock of a product, the older stock will be sold first to prevent expiration or obsolescence.
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Q1. What is your name?
Ans. 
My name is John Smith.
• My first name is John.

• My last name is Smith.

• I go by the name John Smith.
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Q2. Your branch in college?
Ans. 
I majored in Business Administration with a focus on Operations Management.
• Studied courses like Supply Chain Management, Production Planning, and Inventory Control

• Participated in case competitions related to optimizing production processes

• Completed internships at manufacturing companies to gain hands-on experience
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Q3. What is your fathers name?
Ans. 
My father's name is John Smith.
• His first name is John.

• His last name is Smith.

• He goes by the name John Smith.

• He is known as Mr. Smith in his workplace.
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Q4. Write a sql code for having
Ans. 
SQL code for having clause
• Use the HAVING clause to filter groups based on aggregate functions

• It is used with the GROUP BY clause

• Example: SELECT department, AVG(salary) FROM employees GROUP BY department HAVING AVG(salary) > 50000;
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Q5. What is the difference between where and having
Ans. 
WHERE is used to filter rows before grouping or aggregating, while HAVING is used to filter groups after grouping or aggregating.
• WHERE is used with SELECT, UPDATE, DELETE statements to filter rows based on a condition

• HAVING is used with GROUP BY clause to filter groups based on a condition

• WHERE is applied before the grouping operation, while HAVING is applied after the grouping operation
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Find out no of occurrence of character and spaces in given string

Q1. HR checks your flexibility, willingness to align with the organization etc. If already experienced they will talk about your past experiences and attitude.
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Q1. In the technical round a Manager level or a senior would ask questions on the profile, understanding of the organization etc and set expectations regarding the pay package.
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Q1. In the final round, I met the CEO. He is very frank, open and engages in a friendly conversation. He will definitely ask us if we have questions. It will be good to ask questions which exhibit our interest...read more
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