10+ Kent plc Interview Questions and Answers

Steps to be taken when prod goes down

• Identify the root cause of the issue

• Notify the relevant stakeholders

• Initiate the incident management process

• Restore the service as quickly as possible

• Conduct a post-mortem analysis to prevent future occurrences

Prod deployment involves several steps including testing, installation, hotfixes, and bugfixes.

• Create a deployment plan and schedule

• Test the deployment in a non-production environment

• Install the software on production servers

• Apply hotfixes and bugfixes as needed

• Perform post-deployment testing to ensure everything is working correctly

Breaking down a function list for an online sale website involves identifying key functions and organizing them into categories.

• Identify core functions such as product listing, shopping cart management, payment processing, and order fulfillment

• Organize functions into categories like front-end user interface, back-end database management, and external integrations

• Consider user roles and permissions when breaking down functions, such as customer, admin, and vendor functionaliti...read more

Informatica upgrade involves upgrading the Informatica PowerCenter software to a newer version.

• Before upgrading, check the compatibility of the new version with the existing hardware and software.

• Create a backup of the existing repository and domain databases.

• Install the new version of Informatica PowerCenter software.

• Upgrade the repository and domain databases.

• Test the upgraded environment thoroughly before putting it into production.

Optimistic locking is a concurrency control method where a system assumes that multiple transactions can complete without affecting each other.

• Does not lock the data during read operation

• Checks for conflicts only during write operation

• Relies on version numbers or timestamps to detect conflicts

• If conflict is detected, transaction is rolled back or retried

API Gateway pattern is a design pattern used to route API requests to the appropriate microservices.

• Centralized entry point for all API requests

• Handles authentication, authorization, rate limiting, and logging

• Helps in decoupling client applications from individual microservices

• Can aggregate multiple requests into a single request for the client

• Examples include Netflix Zuul, Amazon API Gateway

I manage change requests by prioritizing them based on impact, communicating with stakeholders, and documenting all changes.

• Prioritize change requests based on impact and urgency

• Communicate with stakeholders to gather requirements and ensure alignment

• Document all changes including rationale, impact analysis, and approval

• Track changes throughout the project lifecycle to ensure proper implementation

To make a web page responsive, use media queries, flexible grids, and fluid images.

• Use CSS media queries to adjust layout based on screen size

• Utilize flexible grids like Bootstrap or CSS Grid to adapt to different screen sizes

• Use fluid images that resize based on the container size

• Consider using viewport meta tag to control layout on mobile devices

Clustering is a machine learning technique that groups similar data points together based on certain features.

• Clustering is an unsupervised learning technique where the algorithm groups data points into clusters based on similarity.

• Common clustering algorithms include K-means, DBSCAN, and hierarchical clustering.

• The goal of clustering is to find patterns or structures in data without any prior knowledge of labels.

• Clustering can be used for customer segmentation, anomaly detec...read more

TypeScript is a superset of JavaScript that adds static typing and other features to help developers write more robust code.

• TypeScript is developed and maintained by Microsoft.

• It compiles down to plain JavaScript code.

• TypeScript helps catch errors at compile time rather than runtime.

• It supports modern JavaScript features like classes, interfaces, and modules.

• Example: 'let message: string = 'Hello, World!';'