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

  • Exam Code: JK0-U21
  • Exam Name: CompTIA Strata Fundamentals of PC Technology Exam
  • Updated: Aug 14, 2026
  • Q&As: 241 Questions and Answers

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CompTIA JK0-U21 Exam Syllabus Topics:

SectionObjectives
Topic 1: Computer Hardware Fundamentals- System components (CPU, RAM, storage devices)
  • 1. Memory types and storage devices overview
    • 2. Basic CPU architecture and function
      - Peripheral devices
      • 1. Common hardware interfaces
        • 2. Input/output devices and connectivity
          Topic 2: Security Fundamentals- Safe computing practices
          • 1. Data protection fundamentals
            • 2. Safe browsing and email usage
              - Basic security concepts
              • 1. Passwords and authentication basics
                • 2. Malware awareness
                  Topic 3: Networking Fundamentals- Connectivity basics
                  • 1. Basic troubleshooting connectivity issues
                    • 2. Wired and wireless connections
                      - Basic networking concepts
                      • 1. Network devices (router, switch, modem)
                        • 2. LAN, WAN, and internet fundamentals
                          Topic 4: Operating Systems and Software Basics- Software types
                          • 1. Basic software installation concepts
                            • 2. Application vs system software
                              - Operating system concepts
                              • 1. File systems and basic OS functions
                                • 2. User interface concepts
                                  Topic 5: Troubleshooting and Support- Basic troubleshooting methodology
                                  • 1. Basic diagnostic steps
                                    • 2. Identifying common PC issues

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