COALTECH ENGINEERS Interview Questions and Answers

Q1. How do you understand customer pain points
Ans. 
I understand customer pain points by actively listening, asking probing questions, and empathizing with their challenges.
• Actively listen to customers to understand their concerns and challenges

• Ask probing questions to uncover underlying issues and motivations

• Empathize with customers to truly understand the impact of their pain points

• Use customer feedback and data analysis to identify common pain points across different
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Q2. Did you get a chance to check our products
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Q1. What is your experience with parallelizing transformers, and how do you approach splitting them across multiple devices to minimize latency?
Ans. 
I have experience parallelizing transformers by splitting them across multiple devices to minimize latency.
• I have utilized frameworks like TensorFlow and PyTorch to parallelize transformers.

• I approach splitting transformers by dividing the input data into chunks and distributing them across devices.

• I optimize communication overhead by minimizing data transfer between devices.

• I leverage techniques like data parallelism ...read more
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Q1. Explain about osi layers
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Q2. Tcp vs udp
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Nothing as such very easy aptitude

Q1. Questions related to CS
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Q1. Questions related to CS
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Q1. Questions related to CS
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Q1. Tell me about you
Ans. 
I am a dedicated SEO Executive with a passion for optimizing websites and driving organic traffic.
• I have a strong understanding of SEO best practices and techniques

• I have experience with keyword research, on-page optimization, and link building

• I have successfully increased organic traffic and improved search engine rankings for previous clients or employers
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Q1. How to optimize fresh website?
Ans. 
Optimizing a fresh website involves keyword research, creating quality content, optimizing meta tags, building backlinks, and improving site speed.
• Perform keyword research to identify relevant keywords for your website

• Create high-quality, engaging content that incorporates the chosen keywords

• Optimize meta tags including title tags, meta descriptions, and header tags

• Build backlinks from reputable websites to improve dom...read more
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Q1. Basic Linux Based Questions
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Q2. MYSQL based questions
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Q3. Call flow of DRA-PCRF
Ans. 
DRA-PCRF call flow involves Diameter messages between Diameter Routing Agent and Policy and Charging Rules Function.
• Diameter messages are exchanged between DRA and PCRF for policy and charging control in a network.

• DRA acts as a proxy between the PCRF and other network elements, routing Diameter messages.

• PCRF provides policy control decision-making for subscriber sessions based on network policies.

• Example: DRA receives ...read more
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Basic Apptitude test. Can pass

Q1. Similar questiosns like Round 1
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Q1. What is flow mater
Ans. 
Flow meter is a device used to measure the flow rate of a fluid in a pipe or channel.
• Flow meters can be mechanical, electromagnetic, ultrasonic, or thermal based on the technology used.

• They are commonly used in industries such as water treatment, oil and gas, and pharmaceuticals.

• Flow meters provide accurate measurements of flow rate which is crucial for process control and monitoring.

• Examples of flow meters include tur...read more
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Q2. What is thermocouple
Ans. 
A thermocouple is a temperature sensor that consists of two different metals joined together at one end.
• Consists of two different metals joined together at one end

• Generates a voltage proportional to the temperature difference between the two ends

• Commonly used in industrial applications for temperature measurement

• Types include K-type, J-type, T-type, etc.
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Q1. Why you want to change your present organisation
Ans. 
Seeking new challenges and growth opportunities
• Desire for career advancement

• Looking for new challenges and learning experiences

• Seeking a more supportive work environment

• Interested in working with new technologies or industries
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Q2. Are you willing to relocate
Ans. 
Yes, I am open to relocating for the right opportunity.
• I am open to relocating for the right career advancement.

• I have relocated for previous job opportunities and am willing to do so again.

• I understand the importance of being flexible and adaptable in the workplace.
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Q1. Describe lte call flow
Ans. 
LTE call flow involves multiple steps including connection establishment, data transfer, and connection release.
• UE sends a connection request to the eNodeB

• eNodeB forwards the request to the MME for authentication and authorization

• MME communicates with the HSS for user authentication

• Once authenticated, MME assigns a temporary ID to the UE and establishes a connection with the eNodeB

• Data transfer occurs between the UE an...read more
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Q2. Describe lte mobility procedures
Ans. 
LTE mobility procedures involve handover, tracking area update, and cell reselection.
• Handover: process of transferring an ongoing call or data session from one cell to another

• Tracking Area Update: updating the location of a mobile device when moving to a new tracking area

• Cell Reselection: process of selecting the best cell when a mobile device moves out of the coverage area of the current cell
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