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Career Tips

How do you get good at troubleshooting?
Do not stay in a company more than 3-4 years?

Day 2: Troubleshooting Windows Applications

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CPU advancements pushed processes to multithreads

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Single core CPUs

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1^st CPU to offer 2-logical cores

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Intel’s i9-10900K processor has logical 20 cores

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Child-Parent processes

A child process is a process that is created by another process, called the parent process.

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View the child-parent relationship
Kill (terminate) the parent and all the child processes

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Types of Processes

New Objects: created process/threads/DLLs/handles
Deleted Objects: termination of process/thread/DLL/handle
Own Processes: processes launched when you logged on
Services: all your Service processes
Suspended Processes: power saving mode, in memory but no CPU execution
Packed images: Processes with small portions of code visible the rest either compressed or encrypted (Malware loves this feature)

Newer applications like “modern or UWP” are controlled by the Process Lifetime manager PLM

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Created and Terminated processes

Some performance issues can be processes being created and terminate in an abnormal cycle rate (less than a second)
You will never see the processes or colors change
You must modify the difference duration to at least five seconds

Refresh Rate and Difference Highlighting

Configure the rate at which Process Explorer refreshes its window by using the View|Update Speed menu item. You can refresh the view manually at any time with View|Refresh, the refresh toolbar button, or by pressing F5. Some checks, such as whether a process is part of a Job object or uses the .NET runtime, only occur during process startup. Press F5 to have Process Explorer recheck the status of all processes.

Process Explorer uses difference highlighting to help you see what items change between refreshes. Items, including processes, DLLs, and handles, that exit or are closed show in red and new items show in green. If the refresh rate is not paused the highlighting remains in effect for the interval specified by the Options|Difference Highlight Duration dialog, which has a default value of 1 second. If you pause the display the difference highlighting is in effect only until the next time you manually refresh.

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Types of Processes

Relocated DLLs: applies to DLL view only
Jobs: process controlled by a job object
.NET Processes: processes that use the .NET Framework
Immersive Process: modern or UWP applications
Protected processes: are protected even from Administrators, used by critical system processes

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Processes are assigned a Session

Windows is built on the concept of:

Sessions

Session 0 is run by “System”
Many processes run in session 0

Session 1 is your logon

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Check our Channel videos

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OSI layer five is a complex but remarkably interesting layer where protocols like RPC, Winsock and many more exist and run. Layer 5 is about synchronization of data, establishing, maintaining, and ending communications. You will learn about H.245, iSNS, SMB, RTCP, and another layer five protocols. We will explore how Windows 10 implements layer five. We will use tools to view and expose protocols operating at Layer 5. Enjoy learning some new concepts in Layer 5.

TECHSAVVYPRODUCTIONS.COM

OSI Layer 5 Explained: Mastering Networking

YouTube: https://youtu.be/mo74L_qAVEY

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The presentation layer is about HTTP compression using gzip, deflate, br, and TLS for creating secure connections between two hosts. Layer 6 is loaded with encoders/decoders, byte order format tools, data standard systems allowing communication across disparate operating systems, hardware architectures, developer languages, and syntax methodologies.

We have MIME/SMIME, the amazing encoders for email. Layer 6 is often described in vague terms that aren't helpful for IT students or IT professionals to understand what takes place at Layer 6.

TECHSAVVYPRODUCTIONS.COM

OSI Layer 6 Explained: Sharpen your Network Skills

YouTube: https://youtu.be/xcywrU_5utM

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A look at Bitcoin and other protocols at the top layer of the OSI. Is there a 7.5 OSI layer? Docker and containers are declaring layer 7.5! Learn how Browsers running in user mode access the protocols they need in the network stack. Why *.dll files are critical to networking. How Windows 10 leverages layer 7. Peer into Outlook at layer 7 and see how services play a key role in layer 7.

Over four hundred protocols exist at layer 7 of the OSI model. The importance of two architectures: Client-Server and P2P that function at layer 7. Windows 10 use of P2P. UPnP, Bitcoin protocol, Diameter protocol, HTTP/2 vs HTTP/3 protocol, Internet Communications Engine (ICE) protocol, NTCIP, Precision Time Protocol, TOR, and many more.

TECHSAVVYPRODUCTIONS.COM

OSI Layer 7: Sharpen your Network skills

YouTube: https://youtu.be/9QIeSw-DEJc

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Understanding Server RAID requires a deep dive into concepts and terms. IOPS,

latency, queuing, queue depth, kernel or controller-based RAID are some of the concepts to be

mastered.

Benchmarking storage arrays leads us to a deeper understanding of RAID types, failures

tolerated, why Storage Spaces, ReFS are different. ZFS a Linux alternative to controller-based

RAID is growing. Understand the importance of “rebuild time”. Learn the importance of disk,

controller, and operating systems caching. Why controllers make sense for many RAID

configurations. A look at nested RAIDs like RAID 10 and 60.

TECHSAVVYPRODUCTIONS.COM

Sharpen your Server Skills: Server RAID

YouTube: https://youtu.be/-7EjJYInIzE

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Setup and configuration of software and server firmware. Evaluate the hardware subsystems, determine how to overcome old hardware performance, configure disk arrays, test performance, and prepare the server for an operating system.

How to download and properly set up firmware updates, drivers, and operating system services to run on vendors' hardware. How to set up and configure used servers to advance your skills set and enhance your experience on enterprise equipment. Consider third-party tools for your server. How to properly set up a home lap for training.

TECHSAVVYPRODUCTIONS.COM

Basic Server Setup: Installing critical Software and firmware.

YouTube: https://youtu.be/0CmVA-GV9uk

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