United Airlines Interview Questions and Answers

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...read more
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Q2. Are you willing to relocate
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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...read more
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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...read more
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Q2. How back propagation in NN work
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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...read more
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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...read more
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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...read more
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Q1. About me and my experience
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Q2. Experience with cloud
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Q1. Time series forecasting project
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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...read more
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Q3. Star form of questions
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Python, sql were asked, 1st round was resume based round