Top 15 advanced Power BI interview questions

1. Explain the concept of row-level security in Power BI and how to implement it.

2. What are calculated tables in Power BI, and when would you use them?

3. Describe the differences between DirectQuery, Live Connection, and Import Data storage modes in Power BI.

4. How can you optimize the performance of a Power BI report or dashboard with large datasets?

5. What is the DAX language, and how is it used in Power BI? Provide an example of a complex DAX calculation.

6. Explain the role of Power Query in data transformation within Power BI. What are some common data cleansing techniques in Power Query?

7. What is the purpose of the Power BI Data Model, and how do relationships between tables impact report development?

8. How can you create custom visuals or extensions in Power BI? Provide an example of when you would use custom visuals.

9. Describe the steps involved in setting up Power BI Gateway and its significance in a corporate environment.

10. What are the differences between Power BI Desktop, Power BI Service, and Power BI Mobile? How do they work together in a typical Power BI workflow?

11. Discuss the process of incremental data refresh in Power BI and its benefits.

12. How can you implement dynamic security roles in Power BI, and why might you need them in a multi-user environment?

13. What are Power BI paginated reports, and when would you choose to use them over standard interactive reports?

14. Explain the concept of drill-through in Power BI, including its configuration and use cases.

15. How can you integrate Power BI with other Microsoft products, such as Azure Data Lake Storage or SharePoint?

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IT and Systems Admin Needed at Luton Hospital

Luton Hospital is looking for a skilled IT and Systems Administrator to join their team!
Key Responsibilities:
🔹 Ensure smooth operation of IT infrastructure
🔹 Manage hospital information systems
🔹 Maintain data security & provide technical support
🔹 Ensure compliance with healthcare regulations
Requirements:
✅ Bachelor’s degree in IT, Computer Science, or related field
✅ 3-5 years of IT administration experience (healthcare preferred)
✅ Strong knowledge of networking, cybersecurity, and system administration
✅ HMIS experience is a plus

📍 Location: Luton Hospital, Ngong Road, Nairobi

Ready to take your IT career to the next level?

Apply Here: https://kenyatrends.co.ke/it-and-systems-admin-needed-at-luton-hospital/

12 Vacancies Open At CIC Group

1. Legal Officer
2. Sales Officers
3. Claims Assistant
4. Payable Assistant
5. Financial Advisors
6. Senior Data Scientist
7. Reconciliation Assistant
8. Underwriting Assistant – General Business
9. Regional Relationship Officer – Cooperatives
10. Communications Manager – Digital Marketing

Apply Here: https://kenyatrends.co.ke/12-vacancies-open-at-cic-group/

9 Vacancies Open At Britam
Kenya, Uganda, South Sudan
Positions

1. Facilities Services Engineer
2. Intern, Software Developer
3. Intern, Product Analyst
4. Corporate Sales Manager
5. Claims Assistant (General Insurance)
6. Assistant Manager, Business Operations
7. Head of Business Development - BMI
8. Senior Research Analyst
9. Business Development Officer-Group & Credit Life

Apply Here: https://kenyatrends.co.ke/9-vacancies-open-at-britam/

*Remote Social Media Manager Job at Digicells Solution Limited*

Location: Remote
Employment Type: Full-time

_Canva, Photoshop, SEO, Scheduling Tools_

*Apply Here:* https://kenyatrends.co.ke/remote-social-media-manager-job-at-digicells-solution-limited/

Remote Fullstack Developer with expertise in Laravel, JavaScript, and Vue.js

Focus - to develop APIs and dynamic web applications.

Requirements:
Proficiency in Laravel, Vue.js, JavaScript, HTML/CSS, and MySQL/PostgreSQL.
Experience with RESTful APIs, Git, and responsive design.

More Description & Application👇
https://kenyatrends.co.ke/remote-fullstack-developer-with-expertise-in-laravel-javascript-and-vue-js/

Front End Developer Job at Jobberman

Apply Here: https://kenyatrends.co.ke/front-end-developer-job-at-jobberman

Remote Head of Software Job

Location: Dubai or Remote

Stack: Golang, Node Js

Apply Here: https://kenyatrends.co.ke/remote-head-of-software-job/

𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝘁𝗶𝘀𝘁 𝘃𝘀. 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘃𝘀. 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘀𝘁 𝘃𝘀. 𝗠𝗟 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿

𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝘁𝗶𝘀𝘁

Think of them as data detectives.
→ 𝐅𝐨𝐜𝐮𝐬: Identifying patterns and building predictive models.
→ 𝐒𝐤𝐢𝐥𝐥𝐬: Machine learning, statistics, Python/R.
→ 𝐓𝐨𝐨𝐥𝐬: Jupyter Notebooks, TensorFlow, PyTorch.
→ 𝐆𝐨𝐚𝐥: Extract actionable insights from raw data.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Creating a recommendation system like Netflix.

𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿

The architects of data infrastructure.
→ 𝐅𝐨𝐜𝐮𝐬: Developing data pipelines, storage systems, and infrastructure. → 𝐒𝐤𝐢𝐥𝐥𝐬: SQL, Big Data technologies (Hadoop, Spark), cloud platforms.
→ 𝐓𝐨𝐨𝐥𝐬: Airflow, Kafka, Snowflake.
→ 𝐆𝐨𝐚𝐥: Ensure seamless data flow across the organization.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Designing a pipeline to handle millions of transactions in real-time.

𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘀𝘁

Data storytellers.
→ 𝐅𝐨𝐜𝐮𝐬: Creating visualizations, dashboards, and reports.
→ 𝐒𝐤𝐢𝐥𝐥𝐬: Excel, Tableau, SQL.
→ 𝐓𝐨𝐨𝐥𝐬: Power BI, Looker, Google Sheets.
→ 𝐆𝐨𝐚𝐥: Help businesses make data-driven decisions.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Analyzing campaign data to optimize marketing strategies.

𝗠𝗟 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿

The connectors between data science and software engineering.
→ 𝐅𝐨𝐜𝐮𝐬: Deploying machine learning models into production.
→ 𝐒𝐤𝐢𝐥𝐥𝐬: Python, APIs, cloud services (AWS, Azure).
→ 𝐓𝐨𝐨𝐥𝐬: Kubernetes, Docker, FastAPI.
→ 𝐆𝐨𝐚𝐥: Make models scalable and ready for real-world applications. 𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Deploying a fraud detection model for a bank.

𝗪𝗵𝗮𝘁 𝗣𝗮𝘁𝗵 𝗦𝗵𝗼𝘂𝗹𝗱 𝗬𝗼𝘂 𝗖𝗵𝗼𝗼𝘀𝗲?

☑️ Love solving complex problems?
→ Data Scientist
☑️ Enjoy working with systems and Big Data?
→ Data Engineer
☑️ Passionate about visual storytelling?
→ Data Analyst
☑️ Excited to scale AI systems?
→ ML Engineer

Each role is crucial and in demand—choose based on your strengths and career aspirations.

What’s your ideal role?

Best Data Science & Machine Learning Resources: https://topmate.io/learning_resources/1406977

Credits: https://t.me/datascienceresourcestp

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ENJOY LEARNING 👍👍

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20 Python LibrariesYou Aren't Using (But Should)

O`Reilly

Remote Junior Developer (GoLang & React) Needed at Bleeprs

Requirements:
✅ Proficiency in GoLang for backend development
✅ Strong experience with React.js and frontend frameworks
✅ Understanding of RESTful APIs and API integrations
✅ Familiarity with PostgreSQL or MongoDB (or any relational/noSQL database)
✅ Experience with Git for version control
✅ Basic understanding of cloud services like AWS, GCP, or DigitalOcean

Apply Here: https://kenyatrends.co.ke/remote-junior-developer-golang-react-needed-at-bleeprs

5 Vacancies at Zeraki

* Flutter Mobile Developer - Nairobi, Kenya
* Angular Frontend Intern - Nairobi, Kenya
* Java Backend Intern - Nairobi, Kenya
* Fellow Participant - Nairobi, Kenya
* Business Development Associate -Tanzania

Apply Here: https://kenyatrends.co.ke/5-vacancies-at-zeraki/

Machine Learning, Deep Learning,
Artificial Intelligence - All in One Cheat Sheets

By: Stanford University & Massachusetts Institute Of Technology (MIT)

BOOKS

📚 Title: AI for Data Science
📥Download: https://t.me/AIResourcesTP/16

📚 Title: Top 10 AI Business Ideas For 2025
📥Download: https://t.me/AIResourcesTP/17

Bolt Job Vacancies in Africa
* Kenya
* Tanzania
* Ghana
* South Africa
Apply Here: https://kenyatrends.co.ke/bolt-job-vacancies-in-africa/

🔰 Top 10 Github Repositories For Web Developers 🔰

Telegram Channel: https://t.me/webdevelopmentresourcestp

WhatsApp Channel: https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R

1. Web Developer-Roadmap : https://github.com/kamranahmedse/developer-roadmap

2. 30-Seconds-Of-Code : https://github.com/30-seconds/30-seconds-of-code

3. Awesome-Cheatsheets : https://github.com/LeCoupa/awesome-cheatsheets

4. CSS-Protips : https://github.com/AllThingsSmitty/css-protips

5. 33-JS-Concepts : https://github.com/leonardomso/33-js-concepts

6. You-Dont-Know-JS : https://github.com/getify/You-Dont-Know-JS/tree/2nd-ed

7. Front-End-Checklist : https://github.com/thedaviddias/Front-End-Checklist

8. Javascript-Questions : https://github.com/lydiahallie/javascript-questions

9. Clean-Code-Javascript : https://github.com/ryanmcdermott/clean-code-javascript

10. free-programming-books : https://github.com/EbookFoundation/free-programming-books

Telegram Channel: https://t.me/webdevelopmentresourcestp

Type of problem, while solving DSA problem in Array

❗️ There are many types of problems that can be solved using arrays and different techniques in Data Structures and Algorithms. Here are some common problem types and techniques that you might encounter:

𝟏. 𝐒𝐥𝐢𝐝𝐢𝐧𝐠 𝐰𝐢𝐧𝐝𝐨𝐰 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you are given an array and a window size, and you have to find a subarray of that size that satisfies certain conditions. You can use a sliding window technique to efficiently search through the array by maintaining a current window of fixed size and updating it as you move forward.

𝟐. 𝐓𝐰𝐨 𝐩𝐨𝐢𝐧𝐭𝐞𝐫 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you use two pointers to traverse the array from both ends and find a certain pattern or condition. For example, you can use two pointers to find a pair of elements that sum up to a target value, or to reverse an array.

𝟑. 𝐒𝐨𝐫𝐭𝐢𝐧𝐠 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you are asked to sort an array in a certain way, such as in ascending or descending order, or according to certain criteria such as frequency or value. You can use sorting algorithms such as merge sort or quick sort to efficiently sort the array.

𝟒. 𝐒𝐞𝐚𝐫𝐜𝐡𝐢𝐧𝐠 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you are asked to find a specific element in the array or to search for a certain pattern. You can use searching algorithms such as binary search or linear search to efficiently search through the array.

𝟓. 𝐒𝐮𝐛𝐚𝐫𝐫𝐚𝐲 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you are asked to find a contiguous subarray that satisfies certain conditions. You can use techniques such as prefix sum or Kadane's algorithm to efficiently find the subarray with the maximum sum.

𝟔. 𝐂𝐨𝐮𝐧𝐭𝐢𝐧𝐠 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬: In these problems, you are asked to count the occurrences of certain elements or to count the number of subarrays or subsequences that satisfy certain conditions. You can use techniques such as hashing or dynamic programming to efficiently count the occurrences or number of subarrays.

Best DSA Resources: https://topmate.io/learning_resources/1406117

Telegram Channel: t.me/techpsyche

Don't overwhelm to learn Git,🙌

Git is only this much👇😇

1.Core:
• git init
• git clone
• git add
• git commit
• git status
• git diff
• git checkout
• git reset
• git log
• git show
• git tag
• git push
• git pull

2.Branching:
• git branch
• git checkout -b
• git merge
• git rebase
• git branch --set-upstream-to
• git branch --unset-upstream
• git cherry-pick

3.Merging:
• git merge
• git rebase

4.Stashing:
• git stash
• git stash pop
• git stash list
• git stash apply
• git stash drop

5.Remotes:
• git remote
• git remote add
• git remote remove
• git fetch
• git pull
• git push
• git clone --mirror

6.Configuration:
• git config
• git global config
• git reset config

7. Plumbing:
• git cat-file
• git checkout-index
• git commit-tree
• git diff-tree
• git for-each-ref
• git hash-object
• git ls-files
• git ls-remote
• git merge-tree
• git read-tree
• git rev-parse
• git show-branch
• git show-ref
• git symbolic-ref
• git tag --list
• git update-ref

8.Porcelain:
• git blame
• git bisect
• git checkout
• git commit
• git diff
• git fetch
• git grep
• git log
• git merge
• git push
• git rebase
• git reset
• git show
• git tag

9.Alias:
• git config --global alias.<alias> <command>

10.Hook:
• git config --local core.hooksPath <path>

✅ Web Dev Resources
https://t.me/webdevresourcestp

✅ Free Courses with Certificate:
https://t.me/udemycoursecouponsfree

✅ More Tech Resources
https://t.me/TechPsyche

WhatsApp Channel
https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R

Top 50 LLM Interview Questions

Adaptive Computation & Machine Learning, Learning_Kernel_Classifiers_-_Ralf_Herbrich

Advice from 25 Amazing Data Scientists