Efftronics Systems Technical Support Engineer Interview Questions and Answers

Q1. Salary expectation .
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Q2. Why should I hire you?
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Q1. Mendix Advanced questions.
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Q2. Everything which you mentioned in your resume.
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Round duration - 30. minutes
Round difficulty - Easy

It was in the evening, question were moderate

Q1. 
Count Subsequences Problem Statement
Given an integer array ARR of size N, your task is to find the total number of subsequences in which all elements are equal.
Explanation:
A subsequence of an array i...read more
Ans. 
Count the total number of subsequences in which all elements are equal in an integer array.
• Iterate through the array and count the frequency of each element.

• Calculate the total number of subsequences for each element using the formula (frequency * (frequency + 1) / 2).

• Sum up the total number of subsequences for all elements and return the result modulo 10^9 + 7.
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Round duration - 30 minutes
Round difficulty - Easy

It was in the night around 9:00 PM.

Q1. 
Pair Sum Problem Statement
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Note:
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Ans. 
Given an array and a target sum, find all pairs of elements that add up to the target sum.
• Iterate through the array and for each element, check if the complement (target sum - current element) exists in a hash set.

• If the complement exists, add the pair to the result list.

• Sort the pairs based on the first element and then the second element.

• Return the list of pairs as the final result.
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It was aptitude and technical MCQ questions round

Q1. Technical interview- regarding skills mentioned in resume and projects
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Q2. In same round hr interview was done
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Q1. DeltaV dcs , control strategies, graphics, project execution
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Process knowledge, Logic development

Q1. Salary, industry awareness
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Q1. How many layers in OSI Model?
Ans. 
There are 7 layers in the OSI Model.
• The OSI Model stands for Open Systems Interconnection Model.

• It is a conceptual framework used to understand network communication.

• The 7 layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has specific functions and protocols associated with it.

• For example, HTTP operates at the Application layer, while TCP operates at the Transport la
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Q2. What is the color coding of RJ45 connector?
Ans. 
The color coding of RJ45 connector is used to identify the purpose of each wire in the cable.
• The color coding for RJ45 connector follows the T568A or T568B standard.

• In T568A, the color coding is white-green, green, white-orange, blue, white-blue, orange, white-brown, brown.

• In T568B, the color coding is white-orange, orange, white-green, blue, white-blue, green, white-brown, brown.

• The color coding helps ensure that the ...read more
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Q1. Self introduction?
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Q2. Previous jobs?
Ans. 
I have worked as a Desktop Support Engineer for XYZ Company for 2 years.
• Provided technical support to end users for hardware and software issues

• Installed and configured operating systems and software applications

• Troubleshooted network connectivity problems

• Managed user accounts and permissions

• Performed hardware upgrades and repairs
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Q1. Basics general questions
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Q2. Why are you looking for change. How much hike are you expecting. Why do you want to change within 6 months of joining a new company in my case. Etc
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Q1. General questions from project and services.
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Q2. 1. What is risk analysis,or have you done in your previous job. 2. What is toughest job or project you handled. 3. What is safety, how would you improve it. 4. Standard of materials being used HVAC PROJECT...read more
Ans. 
Risk analysis involves identifying potential risks in a project or job and taking steps to mitigate them.
• Risk analysis involves identifying potential hazards or risks in a project or job.

• It includes assessing the likelihood of these risks occurring and the potential impact they could have.

• Steps are then taken to mitigate or eliminate these risks to ensure the safety of the project and personnel.

• For example, in a previo...read more
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Q1. Interview with regional service head
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Q2. Basics question just like HR. Even though it was difficult convince him that I'm looking for a long association with company as I was switching job within 6 months from joining a new company therefore I wa...read more
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