Ran Chen, EA, CFP®
Tech Exam Prep
Tech Exam Prep is a free, daily podcast by OpenExamPrep covering the most in-demand IT and technology certification exams — including CompTIA Security+, AWS Cloud Practitioner, CompTIA Network+, CCNA, CompTIA A+, and more. Each 5-minute episode breaks down one exam topic with concrete examples, common exam traps, and memory tricks to help you pass on your first attempt. No fluff, no filler — just the concepts you need to know, explained the way the exam tests them. This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP desig...
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Auteur
Ran Chen, EA, CFP®
Catégorie
Site du podcast
Dernier épisode
31 oct. 2026
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Épisodes
[PL-300] 12, Grouping and Aggregating Rows 11.09.2026 3:47
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How single and multiple key combinations dictate table granula...
[PL-300] 11, Creating and Transforming Columns 10.09.2026 3:38
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to distinguish between Power Query transformations and DAX...
[PL-300] 10, Data Types, Locale, and Type Conversion 09.09.2026 3:47
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Key distinction between decimal and fixed decimal for financia...
[PL-300] 9, Fixing Nulls, Errors, and Data Quality Problems 08.09.2026 3:25
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How replacing errors with zero versus leaving nulls impacts DA...
[PL-300] 8, Data Profiling, Column Quality, and Statistics 07.09.2026 4:04
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How Column Quality, Distribution, and Profile features functio...
[PL-300] 7, Creating and Using Power Query Parameters 06.09.2026 3:37
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How Power Query parameters dynamically modify server names, fi...
[PL-300] 6, Import, DirectQuery, and DirectLake 05.09.2026 3:29
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Core operational differences between Import, DirectQuery, and...
[PL-300] 5, Data Source Settings, Credentials, and Privacy Levels 04.09.2026 3:59
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to configure data source settings, file paths, and authent...
[PL-300] 4, Connecting to Files, Databases, and Semantic Models 03.09.2026 4:02
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to choose between single file connectors and the Folder co...
[PL-300] 3, The End-to-End Power BI Data Analyst Workflow 02.09.2026 3:48
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Domain 1 responsibilities including data connections, Power Qu...
[PL-300] 2, Exam Domains, Scoring, and Question Strategy 01.09.2026 3:42
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Breakdown of the four PL-300 exam domain weightings across dat...
[PL-300] 1, What the PL-300 Exam Covers 31.08.2026 4:02
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Structure, scoring, and audience requirements for the Microsof...
CCA-F Exam Prep 45, Reliability — Idempotency, Timeouts, and Failure Modes 30.08.2026 3:13
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How idempotent tool actions prevent duplicate operations durin...
CCA-F Exam Prep 44, Evaluating Agent Quality 29.08.2026 4:01
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The five critical dimensions for measuring agent quality: task...
CCA-F Exam Prep 43, RAG — Retrieval-Augmented Generation 28.08.2026 3:23
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - RAG provides external, real-time knowledge to LLMs like Claude...
CCA-F Exam Prep 42, Prompt Caching — Reducing Latency and Cost 27.08.2026 3:44
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Prompt caching can drastically reduce latency and input token...
CCA-F Exam Prep 41, The Context Window and How Claude Uses Context 26.08.2026 2:50
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - That the CCA-F exam tests context management as a core archite...
CCA-F Exam Prep 40, Common Tool-Design Pitfalls 25.08.2026 3:55
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How vague tool descriptions confuse language models and are a...
CCA-F Exam Prep 39, Auth and Security in MCP 24.08.2026 3:09
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The importance of authenticating both servers and clients in M...
CCA-F Exam Prep 38, Building an MCP Server 23.08.2026 3:25
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - An MCP server is a program that exposes capabilities like tool...
CCA-F Exam Prep 37, MCP Resources, Tools, and Prompts 22.08.2026 2:25
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The distinct functions of MCP primitives: Tools perform action...
CCA-F Exam Prep 36, Designing Good Tool Definitions 21.08.2026 2:45
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - A tool definition consists of three key parts: a clear, verb-l...
CCA-F Exam Prep 35, MCP Architecture — Hosts, Clients, and Servers 20.08.2026 2:53
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - An MCP Host is the user-facing AI application, such as Claude...
CCA-F Exam Prep 34, What Is the Model Context Protocol MCP 19.08.2026 3:12
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - MCP is an open standard, not a proprietary tool, designed to s...
CCA-F Exam Prep 33, Prompt Evaluation and Iteration 18.08.2026 2:41
This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - To treat prompts as code by applying a systematic cycle of tes...
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