CompTIA JK0-U21 : CompTIA Strata Fundamentals of PC Technology Exam

Exam Code: JK0-U21

Exam Name: CompTIA Strata Fundamentals of PC Technology Exam

Updated: Oct 01, 2026

Q & A: 241 Questions and Answers

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CompTIA JK0-U21 Exam Syllabus Topics:

SectionObjectives
Networking Fundamentals- Connectivity basics
  • 1. Wired and wireless connections
    • 2. Basic troubleshooting connectivity issues
      - Basic networking concepts
      • 1. LAN, WAN, and internet fundamentals
        • 2. Network devices (router, switch, modem)
          Troubleshooting and Support- Basic troubleshooting methodology
          • 1. Identifying common PC issues
            • 2. Basic diagnostic steps
              Security Fundamentals- Safe computing practices
              • 1. Safe browsing and email usage
                • 2. Data protection fundamentals
                  - Basic security concepts
                  • 1. Malware awareness
                    • 2. Passwords and authentication basics
                      Operating Systems and Software Basics- Operating system concepts
                      • 1. User interface concepts
                        • 2. File systems and basic OS functions
                          - Software types
                          • 1. Basic software installation concepts
                            • 2. Application vs system software
                              Computer Hardware Fundamentals- Peripheral devices
                              • 1. Input/output devices and connectivity
                                • 2. Common hardware interfaces
                                  - System components (CPU, RAM, storage devices)
                                  • 1. Basic CPU architecture and function
                                    • 2. Memory types and storage devices overview

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