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Deutsche Telekom Software Engineer Interview Questions, Process, and Tips
Top Deutsche Telekom Software Engineer Interview Questions and Answers
- Q1. Share your screen, write a API to get the logs of a spring boot application in kibana way, reading from the back.
- Q2. Find the largest number in an Array without DS and loop in Java 8?
- Q3. Find all the permutation of the Array?
Deutsche Telekom Software Engineer Interview Experiences
4 interviews found
akhil mahendru
(2 Questions)
- Q1. Java8 stream api code
- Q2. Right view of tree Spring boot situation based question
Anonymous
I applied via LinkedIn and was interviewed in Apr 2024. There was 1 interview round.
(2 Questions)
- Q1. Find all the permutation of the Array?
- Ans.
Permutations of an array of strings are all possible arrangements of the elements.
Use recursion to generate all permutations.
Swap elements to create different permutations.
Base case: when only one element is left, add the permutation to the result.
Example: Array ['A', 'B', 'C'] has permutations ['ABC', 'ACB', 'BAC', 'BCA', 'CBA', 'CAB'].
- Q2. Find the largest number in an Array without DS and loop in Java 8?
- Ans.
Use Java 8 Stream API to find the largest number in an array of strings without using additional data structures or loops.
Convert the array of strings to a stream of integers using map() and parseInt()
Use reduce() with Math::max to find the largest number in the stream
Skills evaluated in this interview
I applied via Referral and was interviewed in Apr 2022. There were 3 interview rounds.
(1 Question)
- Q1. Implement stack using linkedlist, discussion on singleton design pattern, java output question
(1 Question)
- Q1. Hashmap Implementation, discussion on arraylist,hashmap, concurrent hashmap, one coding question on string , some other basisc java topic discussed
(1 Question)
- Q1. Sample spring boot code from scratch, discussed all used annotations, exceptional handling, spring security, discussion on complexity of some data structure
Interview Preparation Tips
- Java
- Spring Boot
- Data Structures
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Share your screen, write a API to get the logs of a spring boot application in kibana way, reading from the back.
- Ans.
API to get logs of a Spring Boot app in Kibana way, reading from the back.
Use Spring Boot Actuator to expose endpoints for log retrieval
Configure Logstash to read logs from the application and send to Elasticsearch
Use Kibana to visualize and search logs
Implement pagination to read logs from the back
- Q2. Design ZoomCar
- Ans.
Design a car rental platform like ZoomCar.
Create a user-friendly website and mobile app for booking cars.
Integrate GPS and other technologies for easy tracking and navigation.
Offer a wide range of cars for rent, from hatchbacks to luxury cars.
Provide flexible rental options, including hourly, daily, and weekly rentals.
Implement a secure payment gateway for hassle-free transactions.
Ensure proper maintenance and cleaning...
- Q3. Microservice architecture, REST, Feign Client, RabbitMQ
Interview Preparation Tips
Skills evaluated in this interview
Deutsche Telekom interview questions for designations
Top trending discussions
Interview questions from similar companies
I applied via Recruitment Consulltant and was interviewed in Apr 2024. There were 2 interview rounds.
(3 Questions)
- Q1. JavaScript prototype sorting function
- Ans.
JavaScript prototype sorting function for arrays of strings
Use the Array.prototype.sort() method to sort an array of strings
Pass a compare function to specify the sorting order
Example: ['banana', 'apple', 'cherry'].sort((a, b) => a.localeCompare(b))
- Q2. Promise polyfill from scratch
- Ans.
Creating a Promise polyfill from scratch involves implementing the Promise API using callbacks and handling asynchronous operations.
Understand the Promise API and its methods (resolve, reject, then, catch)
Implement a constructor function that takes an executor function as an argument
Handle asynchronous operations using callbacks and setTimeout
Implement the then and catch methods to handle success and error cases respec
- Q3. React hooks -useEffect useMemo
(2 Questions)
- Q1. Session Management in applications
- Ans.
Session management is the process of securely managing user sessions in web applications.
Use cookies or tokens to track user sessions
Implement session timeout to prevent unauthorized access
Store session data securely on the server side
Use HTTPS to encrypt session data during transmission
- Q2. Why react is fast than other frameworks
- Ans.
React is faster than other frameworks due to its virtual DOM, efficient diffing algorithm, and use of server-side rendering.
React uses a virtual DOM which allows it to update only the necessary components instead of re-rendering the entire page.
React's efficient diffing algorithm compares the virtual DOM with the actual DOM to minimize updates and improve performance.
React supports server-side rendering, which can impr...
Skills evaluated in this interview
(1 Question)
- Q1. Tell me about your past experience?
Selected
I applied via Naukri.com and was interviewed in Apr 2024. There were 3 interview rounds.
(1 Question)
- Q1. Core Java concepts, oops fundamental, cloud, stream api, java 8 features, hashmap how it works, equals override contract
(1 Question)
- Q1. Java 8, multi threading, why lazy evaluation in stream api, internal working of hash map, overloading, overriding
(1 Question)
- Q1. Java basics prepare well
(2 Questions)
- Q1. Mostly Scenario based
- Q2. 1 coding quest, then Detail discussion on each and every topic
Questions were asked
Dsa dp, graphs and many more questions from arrays and linked list were asked
Interview Preparation Tips
MCQ(objective ) question... computer based exam about computer skills
They will give one concept and conduct debate candidates will speak argue advantage and disadvantage about that concept
(1 Question)
- Q1. Face to face technical round. They will ask what's html and what's python advantages of python ect....
- Ans. Hyper text markup language, it will used for creating website and designing website
(4 Questions)
- Q1. Finally Hr round...face to face interview
- Q2. Why we would hiring u
- Q3. Why are you selecting this job
- Q4. What you expect about your salary
Interview Preparation Tips
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