Ran Chen, EA, CFP®

Tech Exam Prep

Education EN ↓ 222 episodes

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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Author

Ran Chen, EA, CFP®

Episodes

CCA-F Exam Prep 7, Routing and Classification Patterns 23.07.2026 2:32

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: - Routing uses a lightweight classifier to dispatch incoming req...

CCA-F Exam Prep 6, Subagents — When and How to Use Them 22.07.2026 3:57

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 definition of a subagent as a specialized agent for a focu...

CCA-F Exam Prep 5, Choosing Models by Capability, Cost, and Latency 21.07.2026 3:21

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 differentiate the three main tiers of Anthropic's Claud...

CCA-F Exam Prep 4, What Is an Agent — Tools, Loops, and Memory 20.07.2026 2:27

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 agent is an autonomous system where a model uses a loop to...

CCA-F Exam Prep 3, Thinking Like a Solution Architect 19.07.2026 3:40

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 prioritize business requirements and technical constrai...

CCA-F Exam Prep 2, Exam Format, Scoring, and the Six Scenarios 18.07.2026 3:15

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 CCA-F exam uses about six detailed scenarios to test your...

CCA-F Exam Prep 1, What Is the Claude Certified Architect Foundations 17.07.2026 2:55

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: - What the Claude Certified Architect – Foundations (CCA-F) cert...

CCNA Exam Prep 65, CCNA Exam Strategy and Question Patterns 16.07.2026 3:18

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 CCNA exam structure consists of 100-120 questions to be an...

CCNA Exam Prep 64, JSON, YAML, XML Data Encoding 15.07.2026 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: - JSON uses curly braces for objects and key-value pairs with do...

CCNA Exam Prep 63, Configuration Management — Ansible, Puppet, Chef 14.07.2026 2:58

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: - Ansible is agentless and uses a push model, making it ideal fo...

CCNA Exam Prep 62, REST APIs — Methods, Status Codes, JSON 13.07.2026 3:24

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: - REST APIs use standard HTTP methods like GET (read), POST (cre...

CCNA Exam Prep 61, Traditional vs Controller-Based Architectures 12.07.2026 3:22

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 key differences between a distributed control plane in tra...

CCNA Exam Prep 60, Network Automation — Why and Impact 11.07.2026 3:03

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: - Why manual network configuration is inefficient and prone to e...

CCNA Exam Prep 59, ACL Placement and Numbered vs Named 10.07.2026 3:08

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: - Standard ACLs should be placed as close to the destination as...

CCNA Exam Prep 58, ACL Standard vs Extended 09.07.2026 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: - The fundamental difference between Standard ACLs (source IP on...

CCNA Exam Prep 57, Wireless Security — WPA2, WPA3, OWE 08.07.2026 3:18

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: - WPA2-Personal uses a single Pre-Shared Key (PSK), while WPA2-E...

CCNA Exam Prep 56, Remote Access VPN — SSL VPN and AnyConnect 07.07.2026 2:36

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 core difference between a per-user Remote Access VPN and a...

CCNA Exam Prep 55, Site-to-Site VPN and IPsec Overview 06.07.2026 3:20

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 three core security services IPsec provides: confidentiali...

CCNA Exam Prep 54, DHCP Snooping and Dynamic ARP Inspection 05.07.2026 3:11

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: - DHCP snooping distinguishes between trusted uplink ports and u...

CCNA Exam Prep 53, Layer 2 Security — Port Security 04.07.2026 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: - How port security restricts port access by limiting the number...

CCNA Exam Prep 52, AAA — RADIUS vs TACACS+ 03.07.2026 3:36

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 difference between connection-oriented TCP for TACACS+ (po...

CCNA Exam Prep 51, Password Policies and Local Authentication 02.07.2026 2:32

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 `enable secret` command provides strong MD5-hashed protect...

CCNA Exam Prep 50, Security Concepts — Threat, Vulnerability, Exploit 01.07.2026 2:20

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 critical differences between a threat (the actor), a vulne...

CCNA Exam Prep 49, SSH vs Telnet, TFTP and FTP 30.06.2026 3:19

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: - Telnet sends all data, including usernames and passwords, in c...

CCNA Exam Prep 48, SNMP and Syslog Severity Levels 29.06.2026 2:46

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 critical security differences between SNMPv2c's plaintext...