10 Questions
What is one of the reasons why NTP is important?
For accurate performance graphs
What protocol and port does the NTP client use to communicate with the NTP server?
UDP over port 123
What is the benefit of Quick Boot in ESX 6.7?
Reduces remediation time during host patch or host upgrade operations
What is one of the learner objectives?
Describe the ESXi host architecture
What is the default state of Quick Boot on supported hardware?
Enabled
What is one of the benefits of using virtual machines?
Solves many data center problems
What is the interface used to configure an ESXi host?
Direct Console User Interface (DCUI)
What is one of the ESXi host settings?
NTP client configuration
What is the purpose of the vSphere Update Manager?
To integrate Quick Boot during remediation operations
What is one of the user account best practices?
To use strong passwords and follow security guidelines
Study Notes
Virtual Machine: Guest and Consumer of ESXi Host
- Any application in any OS can run in a virtual machine (guest) and consume CPU, memory, disk, and network from host-based resources.
- Multiple virtual machines (VM1, VM2, VM3) can run on a single ESXi host, sharing resources such as CPU, memory, disk, and network.
Physical and Virtual Architecture
- Virtualization abstracts physical components into software components, providing solutions for many IT staff problems.
- Physical architecture consists of application, operating system, and x64 architecture.
- Virtual architecture consists of vSphere, x64 architecture, and virtual switch.
Physical Resource Sharing
- Multiple virtual machines share the compute, memory, network, and storage resources of a physical host.
- vSphere enables the abstraction of physical components into software components.
Comparing Physical File Systems and Datastores
- vSphere VMFS enables a distributed storage architecture, allowing multiple ESXi hosts to read or write to the shared storage concurrently.
- Physical architecture consists of application, operating system, and x64 architecture.
- Virtual architecture consists of vSphere, x64 architecture, and shared storage (VMFS, NFS, vSAN, or Virtual Volumes).
Virtual Machine Encapsulation
- vSphere encapsulates each virtual machine into a set of virtual machine files.
- Virtual machine files are stored in directories on a VMFS, NFS, vSAN, or Virtual Volumes datastore.
About VMware Host Client
- VMware Host Client is an HTML5-based thin client that allows direct management of hosts when vCenter Server is unavailable.
- VMware Host Client is served from ESXi: https://your_ESXi_host/ui.
Virtual Machine Hardware
- A virtual machine includes a set of related files.
- Files and components that make up a virtual machine include VMX, VMDK, and VMFS.
Configuring an ESXi Host
- The DCUI (Direct Console User Interface) is a text-based user interface with keyboard-only interaction.
- DCUI enables an administrator to configure root access settings, management network settings, and other settings.
ESXi Quick Boot
- Quick Boot enables ESXi to reboot without reinitializing the physical server BIOS.
- Quick Boot reduces remediation time during host patch or host upgrade operations.
- Quick Boot is integrated into the vSphere Update Manager workflow during remediation operations.
- Quick Boot is enabled by default on supported hardware.
Learn about the basics of virtual machines, how they consume host-based resources, and their relationship with ESXi hosts and vSphere VMkernel. Understand the concept of guests and consumers in virtualization.
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