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  • Tech

    ‘Welcome To The Edge!!!’–What Is Edge Computing???

    June 4, 2021 /

    [Note: This is an evolving, continuously updating post for my research purposes to learn more about SASE, or Secure Access Service Edge. First, I’m laying the groundwork for what ‘edge computing’ is.] Edge Computing The term ‘edge’ is all the rage these days. From a infrastructure-centric point of view, “Edge computing is at it’s essence cloud principles applied at the network edge close to the user“[3]. It can include: Virtualization (Compute virtualization, Storage virtualization, Networking virtualization) Resources On Demand API Driven Approach Automated LCM Life-Cycle management Use of Commodity hardware [3] These are some of the powerful core cloud basic principles that make the network edge highly flexible and programmable.…

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    Blockchain & Money: Session 24: Conclusion, by M.I.T. Sloan School of Management with Professor Gary Gensler

    April 23, 2021

    A Comment on Comments In Programming Languages…

    May 24, 2021

    What is a program?–Notes…

    May 21, 2021
  • Tech

    Managing The Network–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 16, 2021 /

    Managing The Network Managing Risk What is Risk Management? Security policies are documents with broad overview statements. Security controls provide more details. Procedures discuss specific implementation of policies. Security Policies Security Policies document to users how to access system resources and what is allowable and acceptable. Safety policies apply to the IT department, too! NDA’s, software licensing, & data restrictions need to be considered to protect an organization. A.U.P. (Acceptable Use Policy) What can people do with company equipment?? defines ownership; web-site access; access times; R.A.P. (Remote Access Policy) VPN usage; Authentication rules; Password Policy Complexity; Lockout IT Safety Policy Lifting equipment; Equipment handling; Spills; Procedures; License Restrictions Usage; Transfer;…

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    What is Hurricane Electric? Let’s Find Out Whilst Learning About Some Computer/Cyber Network Fundamentals!!!

    April 14, 2021

    Physical Networking—NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes

    May 5, 2021

    Learning To Program Is Hard…

    December 30, 2020
  • Tech

    Building a Real-World Network–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 15, 2021 /

    Building a Real-World Network Network Types Know the differences between all the “area network” acronyms. Geographical: LAN, WAN, CAN, MAN, Internet; Wireless: WLAN, PAN; Network Design Network design starts with assessing customer needs. Design considerations include documentation, compatibility with existing hardware & software. Bring in security early & make sure to assess external connectivity. Assess current networking infrastructure. Analyze existing network documentation. Assess wireless needs. Power Management UPS–Uninterruptible Power Supply A UPS is a battery back-up & should be used for short-term power loss. Power generators can be diesel or gas, and are used to maintain power for when electric power is not available. Dual power supplies and redundant circuitry…

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    Wireless Networking—NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes

    May 6, 2021

    Clubhouse App…the new “Drop-In Audio Chat” App Lighting Up the Tech Community…

    January 4, 2021

    Hashes–Another Data Structure!!! [Ruby Programming Language Notes]

    May 18, 2021
  • Tech

    Mobile Networking–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 15, 2021 /

    Mobile Networking Cellular Technologies Mobile communication can use cellular towers which have a range of over 17 miles. Cellular WAN has developed several standards to handle data traffic. Mobile protocols include: HSPA–3G, HSPA+–4G, and LTE. WiMax–extension of Wi-Fi networks; uses the 802.16 standard for more range than the 802.11 standard. HSPA (High Speed Packet Access)–single Mbps range 3G technology. HSPA+–multiple Mbps range; considered a 4g technology. LTE–ten’s of Mbps range; 4G technology. Tethering–using the cell phones signal to get other devices online. Can be wired or wireless (hotspot). Mobile Connectivity ANT/ANT+ are used for health applicances (e.g.-monitoring; workout equipment; heart-rate monitors; watches), run in 2.4GHz band, range is 20-30 meters,…

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    Raw Materials–Data, Variables, & Data Types–Notes…

    May 24, 2021

    Arrays & Vectors–Arrays–STRUCTURED PROGRAMMING Course Notes

    May 29, 2021

    A 3-Tiered Approach to Securing Your Home Network

    March 10, 2021
  • Tech

    Virtualization & Cloud Computing–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 15, 2021 /

    Virtualization & Cloud Computing Virtualization Basics Don’t confuse virtualization with emulation! Emulation uses software to imitate hardware. Virtualization uses a system’s actual hardware! Recognize the benefits of virtualization. There are two types of hypervisors: Type 1 (bare metal) Type 2 (hosted) Virtualization doesn’t pretend to be anything that it’s not! (Remember, virtualization uses a system’s actual hardware!) Virtualization saves power; & it consolidates hardware; & it makes system recovery easy, & it’s handy for IT research! Hypervisor–V.M.M. (Virtual Machine Monitory) the thing that manages & runs the Virtual Machine for us! Type 2 Hypervisor–runs on top of the host OS. Type 1 Hypervisor–runs directly on top of hardware, independent of…

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    Aaron Comments Off on Virtualization & Cloud Computing–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

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    Start With Why — How Great Leaders Inspire Action | Simon Sinek | TedX [VIDEO]

    June 2, 2021

    What is Traffic Light Protocol (TLP)?

    June 2, 2021

    What is Remote Code Execution?

    June 2, 2021
  • Tech

    Wireless, Virtual, Cloud, & Mobile Networking–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 15, 2021 /

    Wireless, Virtual, Cloud, & Mobile Networking Wireless Networking (Note:Ad-hoc networks are Wi-Fi networks comprised only of peer computers.) Intro To 802.11–uses radio waves to transmit info between nodes. A WAP (Wireless Access Point) is a bridging device that connects into an Ethernet network & communicates via radio waves to wireless clients. A WAP has a SSID (Service Set Identifier), a word or phrase used to connect wireless devices to the WAP device. CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is the method used to prevent wireless collisions. Almost all devices & gadgets today have wireless NICs built-in to them! 802.11 Standards Early wireless standards were 802.11b (2.4-GHz) and 802.11a…

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    Aaron Comments Off on Wireless, Virtual, Cloud, & Mobile Networking–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

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    Ethernet Basics–The Physical Network–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 11, 2021

    WSJ–“Companies Urged to Adjust Hiring Requirements for Cyber Jobs”…

    December 30, 2020

    Internet & The Cloud—NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes

    May 6, 2021
  • Tech

    Internet & The Cloud—NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes

    May 6, 2021 /

    Internet & The Cloud The Internet Beyond the LAN Local Area Network (LAN) computers share the same network ID. A wide area network (WAN) is two or more LANs interconnected by one or more routers A metropolitan area network (MAN) is a WAN that spans a city. A personal area network (PAN) is a point-to-point connection used only in Bluetooth connections LAN—computers hooked together to one switch (All share identical Network ID) WAN—bunch of LANs interconnected with routers. Each LAN has a unique network ID. CAN—Campus Area Network MAN—Metropolitan Area Network WLAN—Wireless Local Area Network Intranet—private network Internet Tiers The Internet is composed of many organizations that connect to each…

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    TCP/IP Applications–Making TCP/IP Work–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes

    May 13, 2021

    Enumerables–A Cleaner Way to Iterate!!! [Ruby Programming Language Notes]

    May 18, 2021

    Blockchain & Money: Session 5: Blockchain Basics & Transactions, UTXO, & Script Code by M.I.T. Sloan School of Management with Professor Gary Gensler

    April 15, 2021

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