AGILE AIRPORT SERVICES ml engineer Interview Questions and Answers

Q1. Node js working in detail
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 that makes it lightweight and efficient.

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

• It has a large ecosystem of libraries and frameworks, such as Express.js and Socket.io.
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Q2. Timer working in node
Ans. 
In Node.js, timers can be implemented using functions like setTimeout() and setInterval().
• Use setTimeout() to execute a function once after a specified delay

• Use setInterval() to execute a function repeatedly at a specified interval

• Clear a timer using clearTimeout() or clearInterval()

• Example: setTimeout(() => { console.log('Timer executed!'); }, 2000);
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Q1. HLD questions on db and backend
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Q2. Relational non relational db
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Q1. What is the internal implementation of Hashing and what is collision?
Ans. 
Hashing is a technique used to map data to a fixed-size array, collision occurs when two different inputs produce the same hash value.
• Hashing involves using a hash function to map data to a fixed-size array.

• Collision happens when two different inputs produce the same hash value.

• Common techniques to handle collisions include chaining and open addressing.
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Q2. Is time complexity of HashMap always O(1) ?
Ans. 
No, time complexity of HashMap is not always O(1).
• Time complexity of HashMap is O(1) on average, but can degrade to O(n) in worst case scenarios.

• Worst case scenarios include hash collisions, which can lead to linear probing and degrade performance.

• Load factor and capacity of the HashMap can also affect time complexity.

• In scenarios where many keys hash to the same index, the time complexity can degrade.
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Q1. Yet to have the interview. Ambition box is forcefully making me enter these details
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1 dsa question 1 sql and 18 mcq questions

Q1. Lot of questions from resumes and projects
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Q2. Easy DSA questions and oops questions
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Tree algorithm about some riddels

Tool test as been conducted

Q1. Technical round still awaiting
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Q1. There were questions of DSA, DBMS, OS etc
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Q2. There were questions around project that were mentioned in resume.
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Q1. What is full form of DGCA and who are they?
Ans. 
DGCA stands for Directorate General of Civil Aviation. They are the regulatory body for civil aviation in India.
• DGCA stands for Directorate General of Civil Aviation

• They are the regulatory body for civil aviation in India

• Responsible for regulation of air transport services, safety oversight, and airworthiness standards

• Issues licenses to pilots, engineers, and air traffic controllers
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Q2. What is CAMO and what is its significant
Ans. 
CAMO stands for Computer-Aided Manufacturing Optimization. It is a process that uses computer software to optimize manufacturing processes.
• CAMO uses computer software to analyze and optimize manufacturing processes

• It helps in reducing production costs and improving efficiency

• CAMO can be used in various industries such as automotive, aerospace, and electronics

• Examples of CAMO software include Siemens NX, Autodesk Fusion
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Q3. What is role of CAAM
Ans. 
CAAM stands for Corrective Action and Preventive Action. It is a systematic approach to identifying, investigating, and resolving quality issues.
• CAAM helps in addressing quality issues by identifying root causes and implementing corrective actions to prevent recurrence.

• It involves documenting the problem, investigating the cause, implementing corrective actions, and monitoring the effectiveness of the actions taken.

• CAA...read more
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Q4. What us SB and AD
Ans. 
SB stands for Standard Deviation and AD stands for Average Deviation.
• SB (Standard Deviation) is a measure of the amount of variation or dispersion of a set of values. It shows how much variation or dispersion exists from the average (mean) value.

• AD (Average Deviation) is a measure of the average absolute difference between each data point and the mean of the data set.
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Q1. Basis of Harness
Ans. 
Harness is the collection of wires and cables that transmit signals and power between different components in a system.
• Harness is used to organize and protect wires and cables in a system.

• It helps in reducing electromagnetic interference and improving signal integrity.

• Harness can be customized based on the specific requirements of the system.

• Examples include wiring harness in automotive industry and cable harness in ae
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Q2. Basis of Earthing
Ans. 
Earthing is the process of connecting electrical systems to the ground to prevent electric shock and protect equipment.
• Earthing provides a path for fault currents to flow safely to the ground.

• It helps in stabilizing voltage levels and protecting against lightning strikes.

• Different types of earthing systems include TN-C, TN-S, TT, and IT systems.

• Proper earthing is essential for safety in electrical installations.
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