Donkey Learning IT
-Linux LPIC (Linux Professional Institute) certifications
-Cisco® network certifications (CCENT, CCNA, Security, Voice, CCNP)
-Labs for certification tracks, both real hardware, Linux server and GNS3
-Teardown, repair and detailed analysis of IT equipment
-Applied electronics and Microcontrollers
-Raspberry Pi and Banana Pi
-Linux servers and KVM based virtualization
-Arcade and Pinball machines (yes, all Donkeys need fun too ;)
Welcome to Donkey Learning IT channel!
I am Donkey, a Linux/network technician who is really enthusiastic about IT.
Considering how quickly IT changes, I think that no matter how long people are
in this business, in many areas they still remain a donkey who needs to learn new tricks.
Hence, there is room for improvements for all of us, especially for me, the Donkey!
I have created this YouTube channel to share with you my passion, experience on
IT certifications and getting a job in IT.
Raptoreum profit: Intel Xeon E5 vs AMD Ryzen 9 3900: too late for the party
SMPS repair series #11: Basics of Feedback Loop and Control Theory in power supplies
Ремонт SMPS, серия №10: Термокомпенсированные стабилитроны в линейных регуляторах
460W Switch Mode PSU teardown, detailed overview and repair: Cisco 3550 PWR PoE
Article 13: Should I turn on YouTube monetization? Your opinion matters
IKEA Ledare 1800lm 22W LED lamp: Teardown and overview
AC voltage Part 2: root-mean-square (RMS) value explained in Python
AC vs DC voltage Part 1: RMS Equivalent heating value explained
SMPS repair series #9: Zener diode and power transistor without feedback loop
Electron flow vs. Conventional current: Thompson's cathode ray experiment
Switch mode power supply repair #8: Pulse Width Modulation explained (PWM)
Switch mode power supply repair #7: Basics of Pulse Width Modulation (PWM)
Howto repair switch mode power supplies #6: Basics of Linear Regulators and voltage references
Howto repair switch mode power supplies #5: Magnetic core materials, ferrite vs steel
Howto repair switch mode power supplies #4: Inductor in electronic circuits P2
Howto repair switch mode power supplies #3: Inductor in electronic circuits P1
Repair Cisco ASA5505 firewall not powering on: video reply to subscriber question
Howto repair switch mode power supplies #2: Stand-by circuit and its functionality
Howto repair switch mode power supplies #1: basics, and block diagram of a PSU
RAID arrays: RAID0 striping, mean time between failure, tracks, sectors, onsite and offsite backup
KVM hypervisor install on virtualization server: BIOS, VT-x, VT-d, Debian bootable USB
Type 1 bare metal vs Type 2 hosted hypervisors, and the VT-x extension: Basics of virtualization
Setting up APC7920 PDU power distribution unit: IP address, web management HTTP, HTTPS, SSL, SSH
Building an IKEA table-rack mounted lab for virtualization, CCNA-CCNP studies, and ZFS
Cheap home lab build: virtualization server, GNS3 for CCNA-CCNP rack, and ZFS
Building an IKEA Lack Rack on wheels for Cisco CCNA and virtualization home lab
Introduction to RAID arrays, basic concepts, sequential vs. random I/O, mechanical vs. SSD drives
Repair of a Cisco 2960G switch with amber LED via RAM chip replacement (FAIL/defect)
How to reflow a GPU from start to finish #2 reflow process and testing the repaired card
How to reflow a GPU from start to finish #1 preparing the card for BGA reflow