Amazon Transportation Services AWS Devops Engineer Interview Questions and Answers for Freshers

Given 3 strings S, S1, S2 containgin M, N and k characters respectively, task is to modify string by replaicing all substring S1 with S2 and S

Q1. Given a string, find the longest length palindromic substring in the given string.
Ans. 
Find the longest palindromic substring in a given string.
• Use dynamic programming to solve the problem efficiently.

• Start with the base cases of single characters and two characters.

• For longer substrings, check if the first and last characters match and if the substring between them is also a palindrome.

• Keep track of the longest palindrome seen so far.

• Time complexity: O(n^2), space complexity: O(n^2).
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Q1. Mention the most challenging technical problem you had to solve.
Ans. 
Developing a real-time data processing system for a high-traffic website.
• Designing a scalable architecture to handle the high volume of incoming data.

• Optimizing the data processing algorithms to minimize latency.

• Ensuring data consistency and accuracy in a distributed system.

• Implementing fault-tolerant mechanisms to handle system failures.

• Testing and debugging the system under various load conditions.
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Q2. Some minor low level entity design.
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Q1. 1. How work biometric device's
Ans. 
Biometric devices use unique physical or behavioral characteristics to identify individuals.
• Biometric devices capture and analyze unique physical or behavioral characteristics such as fingerprints, facial features, iris patterns, voice, and gait.

• The captured data is then compared to a database of pre-registered biometric information to identify the individual.

• Biometric devices are commonly used for security purposes, s...read more
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Q2. 2. Asse management
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Q1. DSA Questions - Easy to medium
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Q1. Tell me something about yourself?
Ans. Have you any experience or no experience?
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Q1. Tell me something about yourself?
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Q2. What is your strength?
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Q3. What is dns and DHCP?
Ans. 
DNS is a system that translates domain names to IP addresses, while DHCP is a protocol that assigns IP addresses to devices on a network.
• DNS stands for Domain Name System and is used to translate domain names (e.g. www.google.com) to IP addresses (e.g. 172.217.3.206).

• DHCP stands for Dynamic Host Configuration Protocol and is used to automatically assign IP addresses, subnet masks, and other network configuration parame...read more
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