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United Airlines Interview Questions and Answers
12 Interview questions
Outlier identification involves statistical methods to detect data points that deviate significantly from the norm.
1. Visual Inspection: Use scatter plots or box plots to visually identify outliers. For example, a box plot can show points outside the whiskers as outliers.
2. Z-Score Method: Calculate the Z-score for each data point. A Z-score above 3 or below -3 typically indicates an outlier.
3. IQR Method: Calcula...
Triggers are database objects that automatically execute predefined actions in response to specific events on a table or view.
Triggers can be set to activate before or after INSERT, UPDATE, or DELETE operations.
Example: A trigger can automatically log changes to a table in an audit table.
They help maintain data integrity and enforce business rules.
Example: A trigger can prevent deletion of a record if it is refere...
As an Associate Engineer, my daily tasks involve project collaboration, technical analysis, and problem-solving in engineering projects.
Collaborate with team members on project designs and specifications, ensuring alignment with project goals.
Conduct technical analysis and simulations to validate design concepts, such as using CAD software for modeling.
Participate in project meetings to discuss progress, challenge...
I'm seeking new challenges and opportunities for growth that my current role doesn't provide.
Desire for professional growth: I've reached a plateau in my current role and am eager to take on more responsibilities.
Looking for a better cultural fit: My current company's values no longer align with my personal and professional goals.
Interest in new industry trends: I'm excited about the potential to work in a more in...
Reversing a string involves rearranging its characters in the opposite order, a common task in programming.
Use built-in functions: In Python, use `s[::-1]` to reverse a string. Example: 'hello' becomes 'olleh'.
Iterative approach: Loop through the string from the end to the start and build a new string. Example: 'abc' becomes 'cba'.
Recursive method: Define a function that calls itself with a substring until the bas...
LLM can use neural networks for tasks such as natural language processing, image recognition, and predictive analytics.
Neural networks can be used in LLM for natural language processing tasks such as sentiment analysis, text generation, and language translation.
LLM can utilize neural networks for image recognition tasks like object detection, facial recognition, and image classification.
Neural networks can also be...
Back propagation is a method used to train neural networks by adjusting the weights based on the error calculated during the forward pass.
Back propagation involves calculating the error between the predicted output and the actual output.
The error is then propagated backwards through the network to adjust the weights using gradient descent.
This process is repeated iteratively until the network's performance improve...
Regularisation in random forest helps prevent overfitting by controlling the complexity of the model.
Regularisation in random forest is achieved by limiting the depth of the trees in the forest.
It helps prevent overfitting by reducing the complexity of the model and improving generalization.
Regularisation parameters like max_depth, min_samples_split, and min_samples_leaf can be tuned to control the complexity of t...
List is mutable, ordered collection of items while tuple is immutable, ordered collection of items in Python.
List is defined using square brackets [] while tuple is defined using parentheses ().
Elements in a list can be changed or modified while elements in a tuple cannot be changed.
Lists are typically used for collections of similar items while tuples are used for fixed collections of items.
Example: list_example ...
ACF measures correlation at different lags; PACF shows direct correlation after removing effects of intervening lags.
ACF (Autocorrelation Function): Measures the correlation between a time series and its lagged values. For example, ACF can show how today's temperature is related to temperatures from previous days.
PACF (Partial Autocorrelation Function): Measures the correlation between a time series and its lagged...
United Airlines Interview Experiences
26 interviews found
Anonymous
I applied via Campus Placement and was interviewed in Sep 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Difference Between List and Touple in python
- Ans.
List is mutable, ordered collection of items while tuple is immutable, ordered collection of items in Python.
List is defined using square brackets [] while tuple is defined using parentheses ().
Elements in a list can be changed or modified while elements in a tuple cannot be changed.
Lists are typically used for collections of similar items while tuples are used for fixed collections of items.
Example: list_example = [1,...
- Q2. Tuple is immutable, while list is mutable.
- Ans.
Tuple is immutable, list is mutable in Python.
Tuple elements cannot be changed once assigned, while list elements can be modified.
Tuple uses parentheses () and list uses square brackets [] for declaration.
Example: tuple_example = (1, 2, 3) vs list_example = [1, 2, 3]
Pizza business case study
Interview Preparation Tips
- Python
- SQL
- Case Studies
Skills evaluated in this interview
I applied via Company Website and was interviewed in Aug 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Basic questions for .Net and stored procedure
- Q2. Questions like functions and sp difference, solid principles etc.
(1 Question)
- Q1. Two programs based on hacker earth test.
(5 Questions)
- Q1. Use less questions based on 25 horses running a race ...
- Q2. Question based on reverse a string
- Ans.
Reversing a string involves rearranging its characters in the opposite order, a common task in programming.
Use built-in functions: In Python, use `s[::-1]` to reverse a string. Example: 'hello' becomes 'olleh'.
Iterative approach: Loop through the string from the end to the start and build a new string. Example: 'abc' becomes 'cba'.
Recursive method: Define a function that calls itself with a substring until the base cas...
- Q3. Question on git commands(who asks these)
- Q4. Questions based on stack and heap memory
- Q5. Questions on explaining useless unworthy questions having no relevance to any experience of work.
Interview Preparation Tips
V
I applied via Approached by Company and was interviewed in Oct 2024. There were 2 interview rounds.
1 dsa question 1 sql and 18 mcq questions
(2 Questions)
- Q1. Lot of questions from resumes and projects
- Q2. Easy DSA questions and oops questions
Interview Preparation Tips
Questions related to programming... Sort an array how we can optimized it.
Selected
I applied via Approached by Company and was interviewed in Apr 2024. There were 2 interview rounds.
(3 Questions)
- Q1. Questions on Java, Microservices, Spring Boot, Desing Patterns
- Q2. Microservices system design questions
- Q3. Java performance management techniques
- Ans.
Java performance management techniques involve optimizing code, memory usage, and resource allocation.
Use efficient data structures and algorithms to improve performance.
Optimize code by reducing unnecessary loops, avoiding excessive object creation, and minimizing memory usage.
Utilize profiling tools like JVisualVM or YourKit to identify performance bottlenecks.
Implement caching mechanisms to reduce redundant computat...
(2 Questions)
- Q1. DynamoDb, Moving data from SQL to No-SQL data set, uses-case based questions
- Q2. Multithreading, Core Java
Interview Preparation Tips
- Java
- Microservices
Skills evaluated in this interview
(2 Questions)
- Q1. Why are you leaving your current job
- Ans.
I'm seeking new challenges and opportunities for growth that my current role doesn't provide.
Desire for professional growth: I've reached a plateau in my current role and am eager to take on more responsibilities.
Looking for a better cultural fit: My current company's values no longer align with my personal and professional goals.
Interest in new industry trends: I'm excited about the potential to work in a more innovat...
- Q2. Are you willing to relocate
(1 Question)
- Q1. Explain the types of basic joins
- Ans.
Basic joins in SQL combine rows from two or more tables based on related columns, enabling data retrieval across multiple datasets.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;
LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;
RIGHT JOIN: Returns all reco...
I applied via Company Website and was interviewed in Jun 2024. There was 1 interview round.
(2 Questions)
- Q1. How LLM use neural network
- Ans.
LLM can use neural networks for tasks such as natural language processing, image recognition, and predictive analytics.
Neural networks can be used in LLM for natural language processing tasks such as sentiment analysis, text generation, and language translation.
LLM can utilize neural networks for image recognition tasks like object detection, facial recognition, and image classification.
Neural networks can also be appl...
- Q2. How back propagation in NN work
- Ans.
Back propagation is a method used to train neural networks by adjusting the weights based on the error calculated during the forward pass.
Back propagation involves calculating the error between the predicted output and the actual output.
The error is then propagated backwards through the network to adjust the weights using gradient descent.
This process is repeated iteratively until the network's performance improves.
Exa...
Interview Preparation Tips
Skills evaluated in this interview
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. Why United Airlines
- Ans.
United Airlines stands out for its commitment to customer service, innovation, and sustainability in the aviation industry.
Strong focus on customer experience, evident in their MileagePlus loyalty program that rewards frequent flyers.
Innovative use of technology, such as the United app for seamless check-in and flight updates.
Commitment to sustainability, with initiatives like reducing carbon emissions and investing in...
- Q2. How do you identify outliers in a dataset
- Ans.
Outlier identification involves statistical methods to detect data points that deviate significantly from the norm.
1. Visual Inspection: Use scatter plots or box plots to visually identify outliers. For example, a box plot can show points outside the whiskers as outliers.
2. Z-Score Method: Calculate the Z-score for each data point. A Z-score above 3 or below -3 typically indicates an outlier.
3. IQR Method: Calculate th...
I appeared for an interview in Jan 2025.
(2 Questions)
- Q1. About me and my experience
- Q2. Experience with cloud
Interview Preparation Tips
I appeared for an interview in Nov 2024, where I was asked the following questions.
- Q1. Time series forecasting project
- Q2. Difference between acf and pacf, what does it indicate How will you forecast all the time series together
- Ans.
ACF measures correlation at different lags; PACF shows direct correlation after removing effects of intervening lags.
ACF (Autocorrelation Function): Measures the correlation between a time series and its lagged values. For example, ACF can show how today's temperature is related to temperatures from previous days.
PACF (Partial Autocorrelation Function): Measures the correlation between a time series and its lagged valu...
- Q3. Star form of questions
Python, sql were asked, 1st round was resume based round
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United Airlines Interview FAQs
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