Altimetrik Interview Questions, Process, and Tips

HackersRank 2 questions

Q1. Context API's in react
Ans. 
Context API is a feature in React that allows sharing data between components without having to pass props through every level of the component tree.
• Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

• It is useful for sharing global data such as themes, user authentication, or language preferences.

• Context API consists of three main parts: Provider...read more
Answered by AI
Add your answer
Q2. Hooks in react js
Ans. 
Hooks in React JS are functions that let you use state and other React features without writing a class.
• Hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• Custom hooks are reusable functions that can contain ...read more
Answered by AI
Add your answer

Q1. COnteaxt API, Hooks, Redux etc
Add your answer
Q2. React lifecycle and some basic sorting/searching alogo questions
Add your answer

Q1. Most questions about jmeter
Add your answer

Q1. Questions about overall work experience
Add your answer

Q1. What are accumulators in spark?
Ans. 
Accumulators are shared variables that are updated by worker nodes and can be used for aggregating information across tasks.
• Accumulators are used for implementing counters and sums in Spark.

• They are only updated by worker nodes and are read-only by the driver program.

• Accumulators are useful for debugging and monitoring purposes.

• Example: counting the number of errors encountered during processing.
Answered by AI
Add your answer
Q2. Explain spark architecture
Ans. 
Spark architecture is a distributed computing framework that consists of a driver program, cluster manager, and worker nodes.
• Spark architecture includes a driver program that manages the execution of the Spark application.

• It also includes a cluster manager that allocates resources and schedules tasks on worker nodes.

• Worker nodes are responsible for executing the tasks and storing data in memory or disk.

• Spark architectu...read more
Answered by AI
Add your answer
Q3. Write a query to find duplicate data using SQL
Ans. 
Query to find duplicate data using SQL
• Use GROUP BY and HAVING clause to identify duplicate records

• Select columns to check for duplicates

• Use COUNT() function to count occurrences of each record
Answered by AI
Add your answer

Q1. What is pub/sub?
Ans. 
Pub/sub is a messaging pattern where senders (publishers) of messages do not program the messages to be sent directly to specific receivers (subscribers).
• Pub/sub stands for publish/subscribe.

• Publishers send messages to a topic, and subscribers receive messages from that topic.

• It allows for decoupling of components in a system, enabling scalability and flexibility.

• Examples include Apache Kafka, Google Cloud Pub/Sub, and
Answered by AI
Add your answer
Q2. What services have you used in GCP
Ans. 
I have used services like BigQuery, Dataflow, Pub/Sub, and Cloud Storage in GCP.
• BigQuery for data warehousing and analytics

• Dataflow for real-time data processing

• Pub/Sub for messaging and event ingestion

• Cloud Storage for storing data and files
Answered by AI
Add your answer

Q1. My Profile is AzureDevOps and interviewer asked me questions on Jenkins and Groovy Scripting
Add your answer
Q2. Interviewer is not aware of JD and my profile
Add your answer

Q1. Technical knowledge on skills
Add your answer

Q1. Fault tolerance and consistency
Add your answer

Q1. Package discussion
Add your answer

Q1. Why DevOps is needed in an organisation?
Ans. 
DevOps is needed in an organization to improve collaboration between development and operations teams, increase efficiency, and deliver high-quality software faster.
• Improves collaboration between development and operations teams

• Increases efficiency in software development and deployment processes

• Helps in delivering high-quality software faster

• Automates repetitive tasks to reduce manual errors

• Facilitates continuous inte...read more
Answered by AI
Add your answer
Q2. What is the difference between ADD vs COPY?
Ans. 
ADD and COPY are Dockerfile instructions used to copy files and directories into a Docker image, but they have some key differences.
• ADD allows for URLs and automatically extracts compressed files, while COPY only works with local files

• COPY is recommended for copying local files and directories into an image, while ADD is more versatile but can be less predictable

• ADD can be used to download files from the internet and a
Answered by AI
Add your answer

Hacker rank test based on python and selenium along with a python programming question

Q1. Explain oops concept and where do you use it in your automation project
Ans. 
OOPs concept refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Reusing code and creating a hierarchy of classes

• Encapsulation: Hiding the internal implementation details of a class

• Polymorphism: Ability to use a single interface for different data types or objects

• Abstraction: Showing only necessary details and hiding unnecessary details
Answered by AI
Add your answer
Q2. What is synchronisation and how do we handle it
Ans. 
Synchronization is the coordination of multiple processes to ensure they work together effectively.
• Synchronization is important in multi-threaded applications to prevent race conditions and ensure data consistency.

• We can handle synchronization using techniques like locks, semaphores, and monitors.

• For example, in Java, we can use synchronized keyword or ReentrantLock class to achieve synchronization.

• Another example is u...read more
Answered by AI
Add your answer

Q1. Coding question find the frequency of characters
Ans. 
Find the frequency of characters in an array of strings.
• Iterate through each string in the array

• For each character in the string, increment its count in a hashmap

• Return the hashmap with character frequencies
Answered by AI
Add your answer
Q2. Robot framework and pytest differences
Ans. 
Robot framework is keyword-driven, while pytest is a full-featured testing framework.
• Robot framework is based on keywords and test cases are written in tabular format, while pytest is a full-featured testing framework with fixtures, asserts, and plugins.

• Robot framework has built-in libraries for various tasks like file operations, database interactions, etc., while pytest relies on external libraries for such functiona...read more
Answered by AI
Add your answer