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100% CompTIA JK0-U21 Guaranteed Success With Testing Engine

Exam Code: JK0-U21

Exam Name: CompTIA Strata Fundamentals of PC Technology Exam

Updated: Jul 21, 2026

Number: 241 Q&As with Testing Engine

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CompTIA JK0-U21 Exam Overview:

Certification Vendor:CompTIA
Exam Name:CompTIA Strata Fundamentals of PC Technology Exam
Exam Number:JK0-U21
Certificate Validity Period:Lifetime (no renewal; certification is retired)
Passing Score:Approximately 70%
Real Exam Qty:Approximately 60 multiple-choice questions
Exam Price:Varies (retired exam; historically around $70–$100 USD)
Available Languages:English
Exam Format:Multiple-choice
Related Certifications:CompTIA A+
CompTIA IT Fundamentals (ITF+)
Exam Duration:60 minutes
Sample Questions:CompTIA JK0-U21 Sample Questions
Exam Way:Computer-based testing (onsite at authorized test centers or online proctoring where available at the time of availability)
Pre Condition:No formal prerequisites; basic computer literacy recommended

CompTIA JK0-U21 Exam Syllabus Topics:

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

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