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Alfa Interview Questions and Answers
Alfa Interview Experiences
1 interview found
Anonymous
Selected
I applied via Referral and was interviewed in Apr 2024. There were 2 interview rounds.
(2 Questions)
- Q1. What is delta 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, scalable metadata handling, and unifies streaming and batch data processing.
It ensures data reliability and data quality by providing schema enforcement and data versioning.
Delta Lake is compatible with Apache Spark and supports various data formats like Parquet, ORC, an
- Q2. What is databricks
- Ans.
Databricks is a unified data analytics platform that provides collaborative environment for big data processing and machine learning.
Databricks provides a unified platform for data engineering, data science, and machine learning.
It is built on top of Apache Spark and offers a collaborative workspace for teams to work on big data projects.
Databricks allows users to write code in multiple languages like Python, Scala, SQ...
(2 Questions)
- Q1. Salary expectations
- Q2. Willing to relocate
- Ans.
Yes, I am willing to relocate for the right opportunity.
I am open to relocating for a position that aligns with my career goals and offers growth opportunities.
I have relocated in the past for job opportunities and have found it to be a positive experience.
I am excited about the possibility of exploring new cities and cultures through relocation.
Skills evaluated in this interview
Data Engineer Interview Questions asked at other Companies
Top trending discussions
Interview questions from similar companies
Senior Java Developer Interview Questions & Answers
Deutsche Telekom
Mohammad Siddiq
posted on 20 Oct 2023
I applied via Naukri.com and was interviewed in Sep 2023. There were 2 interview rounds.
(5 Questions)
- Q1. Difference btwn jdk , jre and jvm
- Ans.
JDK is a development kit that includes JRE and tools for developing Java applications. JRE is a runtime environment for executing Java programs. JVM is a virtual machine that runs Java bytecode.
JDK (Java Development Kit) includes JRE (Java Runtime Environment) and development tools like compiler and debugger.
JRE (Java Runtime Environment) is a software package that provides the libraries and components necessary for ru...
- Q2. Difference btwn static and volatile
- Ans.
Static variables are shared among all instances of a class, while volatile variables are used to indicate that a variable's value will be modified by different threads.
Static variables are initialized only once at the start of the program and retain their value throughout the program's execution.
Volatile variables are used to ensure visibility of changes to variables across multiple threads.
Static variables are accesse...
- Q3. What is final keyword
- Ans.
Final keyword is used in Java to declare constants, prevent method overriding, and prevent class inheritance.
Used to declare constants - value cannot be changed once assigned
Prevents method overriding - method cannot be overridden in child classes
Prevents class inheritance - class cannot be extended
- Q4. Difference btwn paralle stream and stream
- Ans.
Parallel stream allows processing elements concurrently, while stream processes elements sequentially.
Parallel stream can improve performance by utilizing multiple threads for processing.
Stream processes elements one by one in a sequential manner.
Example: stream().parallel() vs stream().sequential()
- Q5. What is stream used for
- Ans.
Streams are used in Java to process collections of objects in a functional style.
Streams allow for concise and readable code when working with collections.
They support operations like filter, map, reduce, and collect.
Streams can be sequential or parallel, depending on the processing requirements.
Example: List
names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(S
Skills evaluated in this interview
60 Minutes, Mostly DSA c# and platform used was HackerRank
(2 Questions)
- Q1. It was a virtual interview mostly preferred content is DSA, space and time complexity and software development
- Q2. They'll give us a scenario and ask us to write code accordingly.
Interview Preparation Tips
Be attentive
Don't get confused
Take time to think and then answer the question
If you're not familiar with the question just say 'I don't know' dont try to turnaround things
I applied via Approached by Company and was interviewed before Nov 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. They just check you last draws salary and account statement
- Q2. No technical round
Interview Preparation Tips
Over target
Low salary
I applied via campus placement at Vellore Institute of Technology (VIT) and was interviewed in Oct 2022. There were 5 interview rounds.
It was a combination of coding and aptitude test. The test had four section and each section had it's time limit.
(3 Questions)
- Q1. The interviewer asked me question based on my resume. He also asked me question related to DBMS, OS & DSA.
- Q2. Define polymorphism.
- Ans.
Polymorphism is the ability of an object to take on many forms.
Polymorphism allows objects of different classes to be treated as if they are of the same class.
It can be achieved through method overloading or method overriding.
For example, a parent class Animal can have child classes like Dog, Cat, and Bird, each with their own unique implementation of the method 'makeSound'.
- Q3. Difference between SQL & NoSQL.
- Ans.
SQL is a relational database management system, while NoSQL is a non-relational database management system.
SQL databases use structured query language for defining and manipulating the data.
NoSQL databases are schema-less and use various data models like key-value, document, columnar, or graph.
SQL databases are suitable for complex queries and transactions.
NoSQL databases are horizontally scalable and provide high perf...
(1 Question)
- Q1. It was a managerial round.
(1 Question)
- Q1. It asked me some situational based questions.
Interview Preparation Tips
- DBMS
- DSA
- OS
Skills evaluated in this interview
I applied via Recruitment Consulltant and was interviewed in Aug 2022. There were 4 interview rounds.
(1 Question)
- Q1. SIP 1. Various methods of Sip 2. Mandatory headers 3. Transaction v Dialog v Session 4. Call Transfer callflow Attended & unattended 5. ACK method why it is needed for INVITE 6. From v Req Uri difference ...
(1 Question)
- Q1. Managerial Round Explain about various projects, Reason for change, where do you want to see yourself in few years
(1 Question)
- Q1. Salary negotiation, reason for change
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Jul 2022. There were 3 interview rounds.
There will be some mcq and coding questions.
(2 Questions)
- Q1. This is will be a 30 mins interview.
- Q2. Questions on python,networking,ds,os
(1 Question)
- Q1. Coding question on c,c++,python. Basics of networking ,oops and os.
Interview Preparation Tips
- Python
- OOPS
- Computer Networking
(2 Questions)
- Q1. Safety related questions
- Q2. Permit to work related
(1 Question)
- Q1. Tool box talk related
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Mar 2022. There was 1 interview round.
Interview Questionnaire
16 Questions
- Q1. Introduce yourself
- Q2. How many years of experience?
- Q3. Are you technical or non technical?
- Q4. Tell me your job Roles and responsibilities?
- Q5. What is your current CTC?
- Q6. What is your expected CTC?
- Ans.
My expected CTC is negotiable based on the job responsibilities, company size, and location.
My expected CTC is based on my experience, skills, and industry standards.
I am open to discussing the compensation package during the interview process.
I am looking for a competitive salary that aligns with my qualifications and the market rate.
- Q7. What's your graduation?
- Q8. What's your preferred job location?
- Q9. You're from which state?
- Q10. Do ready for technical round?
- Q11. Once compete your technical round will let you know
- Q12. What it is your notice period?
- Q13. What's is your current company?
- Q14. What's your job rol
- Q15. Are you able to do rotational shifts?
- Ans.
Yes, I am able to do rotational shifts as required for the job.
I am flexible with my work schedule and can adapt to different shifts
I have previous experience working in rotational shifts
I understand the importance of maintaining network operations 24/7, which may require working different shifts
- Q16. Are you able to night shift?
Project Manager Interview Questions & Answers
Aerial Telecom Solutions
Subzar Ahmad Parry
posted on 16 Mar 2021
I applied via Approached by Company and was interviewed in Dec 2021. There were 2 interview rounds.
Interview Questionnaire
2 Questions
- Q1. The director didn’t have any interview know like
- Q2. Nothing was asked. HR was clueless
Interview Preparation Tips
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Alfa Interview Process
based on 1 interview
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