Zebra Technologies Interview Questions, Process, and Tips

Forecasting problem - Predict daily sku level sales

Q1. What is difference between bias and variance
Ans. 
Bias is error due to overly simplistic assumptions, variance is error due to overly complex models.
• Bias is the error introduced by approximating a real-world problem, leading to underfitting.

• Variance is the error introduced by modeling the noise in the training data, leading to overfitting.

• High bias can cause a model to miss relevant relationships between features and target variable.

• High variance can cause a model to ...read more
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Q2. Parametric vs non parametruc model
Ans. 
Parametric models make strong assumptions about the form of the underlying data distribution, while non-parametric models do not.
• Parametric models have a fixed number of parameters, while non-parametric models have a flexible number of parameters.

• Parametric models are simpler and easier to interpret, while non-parametric models are more flexible and can capture complex patterns in data.

• Examples of parametric models inc...read more
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Q1. What is jdk, string related questions, basic java oops questions?
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Q1. What are the main principles of the Java
Ans. 
Main principles of Java include object-oriented programming, platform independence, and automatic memory management.
• Object-oriented programming: Java is based on classes and objects, allowing for encapsulation, inheritance, and polymorphism.

• Platform independence: Java code can run on any platform that has a Java Virtual Machine (JVM) installed.

• Automatic memory management: Java uses garbage collection to automatically m
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Q2. What is the different between == and equals method
Ans. 
The == operator compares the memory addresses of two objects, while the equals method compares the content of two objects.
• The == operator is used to compare the memory addresses of two objects in Java.

• The equals method is used to compare the content of two objects in Java.

• Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will return false, but str1.equals(str2) will return true
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Q1. Normal question about past experience
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Q2. When you can join and all
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SQL test on Select query, insert, create

Os, cloud computing, DBMS, networks, ai and ml mcq questions were asked

Q1. Case study based on scenario
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Q2. Group interview with Panel
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Case study - prize optimization problem

Q1. Structured vs unstructured data
Ans. 
Structured data is organized and easily searchable, while unstructured data lacks a predefined format.
• Structured data is organized into rows and columns, like a database.

• Unstructured data includes text documents, images, videos, and social media posts.

• Structured data is easier to analyze and query, while unstructured data requires more advanced techniques like natural language processing.

• Examples of structured data inc...read more
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