Introduction

Hello world! My name is Victor Fernandez III. These are notes I have developed to help you prepare for the CompTIA Security+ certification. They also represent what I believe should be the baseline body of knowledge for junior cybersecurity professionals. Based on my experience in the field, I strongly recommend investing time learning Information Technology (IT) and networking fundamentals before diving into cybersecurity. If this recommendation speaks to you, I have another digital notebook for the CompTIA IT Fundamentals certification.

Before Getting Started

Before getting started, I recommend having a broad understanding of the topics below. They provide the backdrop for a lot of material in cybersecurity so spending the time to do a deep-dive on each will make your studying efforts go more smoothly.

  • Electromagnetic Spectrum

    • Copper (volts), radio (signal), fiber optic (photons)

  • Web Applications

    • Graphical user interfaces

    • Databases queries

  • Encapsulation

  • Protocol Data Units

    • Segments

    • Packets

    • Frames

    • Bits

  • TCP/IP

    • DNS, HTTP

    • TCP, UDP

    • IP

    • IEEE 802.3 (Wired Ethernet), IEEE 802.11 (Wireless Ethernet), IEEE 802.15.1 (Bluetooth)

  • Networking Protocols

  • Encryption

  • Hashing

  • Wireless Communication

Credits

NextThreats

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