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Luxoft Interview Questions and Answers
67 Interview questions
Find the maximum repeated number in a given string by counting occurrences of each digit and identifying the highest one.
Iterate through the string: Loop through each character in the string to check if it's a digit.
Count occurrences: Use a map or array to count how many times each digit appears.
Identify the maximum: After counting, determine which digit has the highest count.
Return the result: Output the digit th...
Indexing can improve query performance but has drawbacks like increased storage and maintenance overhead.
Increased storage requirements: Indexes consume additional disk space. For example, a large table with multiple indexes can significantly increase storage needs.
Slower write operations: Inserting, updating, or deleting records can be slower due to the need to update indexes. For instance, adding a new row requi...
Check constraints enforce specific rules on data in SQL tables to maintain data integrity.
Check constraints ensure that values in a column meet a specific condition.
Example: `CHECK (age >= 18)` ensures that the age column only contains values 18 or older.
They can be applied to single columns or multiple columns.
Example: `CHECK (salary > 0 AND department IS NOT NULL)` ensures salary is positive and department...
Creating a simple Jenkins job with required parameters
Log in to Jenkins and click on 'New Item'
Enter a name for the job and select 'Freestyle project'
Add build steps, post-build actions, and configure parameters as needed
Save the job and run it to test
A Business Analyst (BA) bridges the gap between stakeholders and IT, ensuring business needs are met through effective solutions.
Gathering and analyzing business requirements from stakeholders to understand their needs.
Creating detailed documentation, such as business requirement documents (BRDs) and functional specifications.
Facilitating communication between technical teams and business stakeholders to ensure al...
A binary upgrade is a software upgrade that involves replacing the existing version with a new version without changing the data format or structure.
Binary upgrades are typically faster and easier to implement compared to non-binary upgrades.
They are commonly used in software applications to ensure compatibility with existing data and configurations.
An example of a binary upgrade is updating a software application...
Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications.
Kubernetes follows a master-slave architecture with a master node that controls multiple worker nodes.
Master node components include API server, scheduler, controller manager, and etcd.
Worker node components include kubelet, kube-proxy, and container runtime (e.g. Docke...
ConcurrentSkipListMap is a concurrent, sorted map implementation in Java.
ConcurrentSkipListMap is a concurrent version of SkipListMap, which is a sorted map implementation based on skip list data structure.
It allows multiple threads to access and modify the map concurrently.
It provides logarithmic time complexity for most operations, making it efficient for concurrent access.
Example: ConcurrentSkipListMap<Integ...
Annotations in Java provide metadata about a program that can be used by the compiler or at runtime.
Annotations start with the @ symbol.
Annotations can be used to provide information to the compiler or to runtime environments.
Annotations can be used to define custom metadata for classes, methods, fields, etc.
Annotations can also be used for code generation, documentation, and validation.
Examples of annotations in ...
Blending combines data from different data sources in a single view, while joins combine data from the same data source based on a common field.
Blending is used when data comes from different sources and cannot be joined together directly.
Joins are used when data comes from the same source and can be combined based on a common field.
Blending allows for combining data at different levels of granularity.
Joins requir...
Luxoft Interview Experiences
128 interviews found
Anonymous
I applied via Job Portal
(3 Questions)
- Q1. Ways to send data from JCL to COBOL
- Ans.
Data can be sent from JCL to COBOL using parameters, files, or shared memory.
Passing parameters through JCL PROC statement
Writing data to a file in JCL and reading it in COBOL program
Using shared memory to communicate between JCL and COBOL
- Q2. What are cursors?
- Ans.
Cursors are database objects used to retrieve data from result sets one row at a time.
Cursors are used in database management systems to navigate through a result set.
They allow for processing individual rows of a result set instead of fetching the entire set at once.
Cursors can be used in SQL queries to perform operations on each row of a result set.
- Q3. Checkpoint in Db2
- Ans.
Checkpoint in Db2 is a mechanism used to ensure data consistency during recovery.
Checkpoints are used to write all modified data from the buffer pool to the disk.
They help in reducing the amount of work needed during database recovery.
Checkpoints can be triggered manually or automatically based on configuration settings.
(1 Question)
- Q1. Overall experience
Skills evaluated in this interview
SANTOSH AMBIG
Selected
I appeared for an interview in Dec 2024.
(2 Questions)
- Q1. Technically experience skill
- Q2. Integration Testing
(2 Questions)
- Q1. Company Experience
- Q2. Salary
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Architecture of Kubernetes?
- Ans.
Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications.
Kubernetes follows a master-slave architecture with a master node that controls multiple worker nodes.
Master node components include API server, scheduler, controller manager, and etcd.
Worker node components include kubelet, kube-proxy, and container runtime (e.g. Docker).
Ku...
- Q2. Scenario based Questions
gaurav kumar
I applied via Naukri.com and was interviewed in Sep 2024. There were 2 interview rounds.
An online coding test at coderByte. Medium level question.
(2 Questions)
- Q1. Find sum of distinct elements from two given array.
- Ans.
Sum of distinct elements from two arrays
Create a set to store distinct elements from both arrays
Iterate through each array and add elements to the set
Calculate the sum of elements in the set
- Q2. Discussion around Java,Spring-boot.
Skills evaluated in this interview
(2 Questions)
- Q1. How annotation works?
- Ans.
Annotations in Java provide metadata about a program that can be used by the compiler or at runtime.
Annotations start with the @ symbol.
Annotations can be used to provide information to the compiler or to runtime environments.
Annotations can be used to define custom metadata for classes, methods, fields, etc.
Annotations can also be used for code generation, documentation, and validation.
Examples of annotations in Java ...
- Q2. CondurentSkipListMap, how does it work
- Ans.
ConcurrentSkipListMap is a concurrent, sorted map implementation in Java.
ConcurrentSkipListMap is a concurrent version of SkipListMap, which is a sorted map implementation based on skip list data structure.
It allows multiple threads to access and modify the map concurrently.
It provides logarithmic time complexity for most operations, making it efficient for concurrent access.
Example: ConcurrentSkipListMap<Integer, S...
Skills evaluated in this interview
(2 Questions)
- Q1. Interceptors, Guards, AOT vs JIT
- Q2. Angular Lifecycle hooks, unit tests, lazy loading
(2 Questions)
- Q1. Interceptors, guards, forms
- Q2. Angular lifecycle hooks, Aot compolation
sakthiy sabari
The interview went well, covering topics such as datamarts, Linux scripts, and more.
(1 Question)
- Q1. What is a binary upgrade?
- Ans.
A binary upgrade is a software upgrade that involves replacing the existing version with a new version without changing the data format or structure.
Binary upgrades are typically faster and easier to implement compared to non-binary upgrades.
They are commonly used in software applications to ensure compatibility with existing data and configurations.
An example of a binary upgrade is updating a software application from...
(5 Questions)
- Q1. Types of clusters in Databricks
- Ans.
Types of clusters in Databricks include Standard, High Concurrency, and Single Node clusters.
Standard clusters are used for general-purpose workloads
High Concurrency clusters are optimized for concurrent workloads
Single Node clusters are used for development and testing purposes
- Q2. What is catalyst optimiser in Spark
- Ans.
Catalyst optimizer is a query optimizer in Apache Spark that leverages advanced techniques to optimize and improve the performance of Spark SQL queries.
Catalyst optimizer uses a rule-based and cost-based optimization approach to generate an optimized query plan.
It performs various optimizations such as constant folding, predicate pushdown, and projection pruning to improve query performance.
Catalyst optimizer also leve...
- Q3. What is explode function
- Ans.
Explode function is used in Apache Spark to split an array into multiple rows.
Used in Apache Spark to split an array into multiple rows
Creates a new row for each element in the array
Commonly used in data processing and transformation tasks
- Q4. Delta lake vs data lake
- Ans.
Delta Lake is an open-source storage layer that brings ACID transactions to Apache Spark and big data workloads.
Delta Lake provides ACID transactions, schema enforcement, and time travel capabilities on top of data lakes.
Data lakes are a storage repository that holds a vast amount of raw data in its native format until it is needed.
Delta Lake is optimized for big data workloads and provides reliability and performance ...
- Q5. What is RDD ?
- Ans.
RDD stands for Resilient Distributed Dataset, a fundamental data structure in Apache Spark.
RDD is a fault-tolerant collection of elements that can be operated on in parallel.
RDDs are immutable, meaning they cannot be changed once created.
RDDs support two types of operations: transformations (creating a new RDD from an existing one) and actions (returning a value to the driver program).
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2024. There were 4 interview rounds.
2 Basic Programsl on LRU amd strings
(1 Question)
- Q1. Core java , java 8 concepts, spring core concepts
(1 Question)
- Q1. Salary discussion
(1 Question)
- Q1. Policy briefing
Selected
I applied via Referral and was interviewed in Jun 2024. There were 2 interview rounds.
(2 Questions)
- Q1. What does privacy mean to you?
- Ans.
Privacy means the right to control one's personal information and data.
Privacy is the ability to keep personal information and data confidential
It involves respecting boundaries and not intruding into someone's personal space
Examples include protecting sensitive customer information and not sharing it without consent
- Q2. Would you rather manage or be managed?
- Ans.
I would rather manage than be managed.
I prefer taking initiative and leading a team towards a common goal.
I enjoy the challenge of problem-solving and decision-making.
I have experience in leadership roles where I successfully managed projects and teams.
(2 Questions)
- Q1. Explain "code of conduct".
- Ans.
Code of conduct is a set of rules and guidelines that outline the ethical and professional behavior expected from individuals in a particular organization or profession.
Code of conduct sets standards for behavior and interactions within an organization.
It outlines expectations for ethical decision-making and professionalism.
Violation of the code of conduct can result in disciplinary action.
Examples include rules on con...
- Q2. What is something you are proud of?
- Ans.
I am proud of successfully leading a team project to completion.
Led a team project from start to finish
Ensured all team members were on track and motivated
Delivered project on time and within budget
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Luxoft Interviews By Designations
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