National Instruments Software Engineer III Interview Questions and Answers

MCQ questions in a time frame of 45 mins.

Q1. Resume based questions
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Q2. Questions on Stack
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Basics of Aptitude and Engineering

Q1. Types of Transmission Lines
Ans. 
Transmission lines are used to carry signals or power from one point to another.
• Types include coaxial cables, twisted pair cables, and optical fibers.

• Coaxial cables have a central conductor surrounded by an insulating layer and a metallic shield.

• Twisted pair cables consist of two insulated copper wires twisted together to reduce interference.

• Optical fibers use light to transmit data and are made of glass or plastic fib...read more
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Q2. Diplexer vs Duplexer
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A diplexer is a device that separates or combines different frequency bands, while a duplexer is a device that allows two-way communication over a single channel.
• Diplexer is used to separate different frequency bands in communication systems.

• Duplexer allows two-way communication over a single channel by separating transmit and receive signals.

• Example: Diplexer is used in satellite communication to separate uplink and d...read more
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Q3. Phase delay vs Group delay
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Phase delay is the time difference between input and output signals, while group delay is the rate of change of phase delay with respect to frequency.
• Phase delay is the time delay experienced by a signal passing through a system, while group delay is the derivative of phase delay with respect to frequency.

• Phase delay is constant for all frequencies, while group delay varies with frequency.

• In audio systems, phase delay ...read more
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Q4. Antenna Basics of the RF
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Q5. Final year Project details
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90 questions 90 minutes multiple choice

Q1. Core +it knowledge on c#,.net etc
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Q1. Basic C#, OOPS, design priniciples
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Technical plus aptitude based on domain you choose( pre placemt talks)

Q1. Communication theory , aptitude, electronics basics for firmware domain(screening)
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Q2. Coding related questions
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Q1. Circuits related practical questions
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Q1. General things only
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Percentage, number system , profit loss, blood relations

Data structures and algorithms , javascript , css ,html

Q1. What are your strengths and weaknesses
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Q1. Where do you see yourself in next five years
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Q1. Write a code which should check whether the given string is palindrome or not in java
Ans. 
A code to check whether a given string is a palindrome or not in Java.
• Convert the string to lowercase to ignore case sensitivity.

• Use two pointers, one starting from the beginning and the other from the end of the string.

• Compare the characters at the two pointers and move them towards the center until they meet or cross each other.

• If at any point the characters don't match, return false.

• If the pointers meet or cross eac...read more
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Q2. 2 logical question the first one was if you have given a cake how can you cut down in 8 pieces in 3 cuts Second question im not remembering
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Basic aptitude questions ,, 45 question 60 mins.

Aptitude 45questions 1 hr

Q1. Panel was of 2 person, asked about projects , html, css, java, and questions on microcontrollers
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Q2. Explain css box model
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CSS box model is a fundamental concept in web design, defining the structure and layout of elements on a webpage.
• The box model consists of content, padding, border, and margin around an element.

• Content area is where text and images are displayed.

• Padding is the space between the content and the border.

• Border is the line that goes around the padding and content.

• Margin is the space outside the border, separating the eleme
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Q3. Dom objects , union and structure
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