Latest CBT Nugget Skill in Development – Cisco VIRL!

August 29, 2019 at 6:56 pm

Cisco VIRL

As part of the exciting new Cisco Next Level Certifications prep for 2020, Chuck Keith, Keith Barker, Jeremy Cioara and myself have decided to begin with skills that walk you through the various hands-on lab options for Cisco students. As a result, we will have skills for you at CBT Nuggets covering Packet, Tracer, GNS3, and of course, Cisco VIRL.

I will have this skill complete and published on the site in the next week or so. Here is the current proposed Nugget lineup. Not seeing something you really want to be covered? No problem – let me know in the comments here!

Thanks for reading, and may all your VIRL emulations be bright!

Use Cisco VIRL 1.X for Hands-on Practice

  1. Why Use Cisco VIRL 1.X?
  2. VIRL Components and Setup Options 
  3. Installing Cisco VIRL in an OS
  4. Installing Cisco VIRL in ESXi
  5. Installing and Touring VM Maestro
  6. Configuring Devices “From Scratch” in VIRL
  7. Creating Auto Configured Emulations 
  8. Connecting VIRL to Real Gear and Networks 
  9. Troubleshooting Common VIRL Issues 
  10. Cisco VIRL – Final Thoughts 



Understanding the Windows 10 Boot Process

March 22, 2019 at 9:53 am

Windows 10 Boot Process

In order to properly troubleshoot Windows 10 startup problems (as you are required to do in exam MD-100 from Microsoft), it is critical that you understand the various phases of the boot process and the components involved. This post provides that information below:

Phase 1 – Preboot

In this phase, the PC’s firmware is in charge and initiates a POST and loads the firmware settings. Once all this works (hopefully), the system identifies a valid system disk and reads the MBR. The system then starts the Windows Boot Manager. This is located here: %SystemDrive%\bootmgr

Phase 2 – Windows Boot Manager

It is the job of the Windows Boot Manager to find and start the Windows loader (Winload.exe). This is located on the Windows boot partition – %SystemRoot%\system32\winload.exe

Phase 3 – Windows Operating System Loader

In this phase, essential drivers required to start the Windows kernel are loaded and the kernel starts to run. The key file here is %SystemRoot%\system32\ntoskrnl.exe

Phase 4 – Windows NT OS Kernel

The kernel loads the system registry hive into memory and loads the drivers that are marked as BOOT_START. The kernel then passes control to the session manager process (Smss.exe).

You can identify the phase you are in visually by what your computer is displaying and the LEDs that are on the system. I will follow up with additional posts on this subject so that you can easily tell what phase you are stuck at – and what you can do to fix things.

Thanks for reading, and be sure to check out my new MD-100 Windows 10 training at CBT Nuggets!

3.5.b EIGRP Neighbor Relationships

January 10, 2018 at 9:56 pm
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