Random Cards

Question 1

Distributed Power Management (DPM)

Answer 1

A feature that optimizes power consumption in an ESXi cluster.

Question 2

Proactive HA

Answer 2

A feature that minimizes VM downtime by proactively detecting hardware failures and placing the host in Quarantine Mode or Maintenance Mode.

Question 3

VMFS

Access for ESXi hosts Version 6.0 and earlier?

Answer 3

VMFS 5 = Yes

VMFS 6 = No

Question 4

VMFS

4Kn storage devices support?

Answer 4

VMFS 5 = No

VMFS 6 = Yes

Question 5

VMFS

Automatic Space Reclamation Support?

Answer 5

VMFS 5 = No

VMFS 6 = Yes

Question 6

VMFS

MBR storage device partitioning support?

Answer 6

VMFS 5 = Yes

(For a VMFS5 datastore that has been previously upgraded from VMFS3.)

VMFS 6 = No

Question 7

Advantages of IP Hash NIC Teaming

Answer 7

A more even distribution of the load compared to Route Based on Originating Virtual Port and Route Based on Source MAC Hash.

A potentially higher throughput for virtual machines that communicate with multiple IP addresses.

Question 8

Disadvantages of IP HASH NIC Teaming

Answer 8

Highest resource consumption compared to the other load-balancing algorithms

Requires changes on the physical network.

Complex to troubleshoot

Question 9

Common Features of VSS and VDS?

Answer 9

Question 10

VDS Only Features?

Answer 10

Question 11

VMware Directory Service (vmdir)

Answer 11

Serves as an identity source that handles SAML certificate management for authentication with vCenter Single Sign-On.

Question 12

VMware Certificate Authority (VMCA)

Answer 12

Issues certificates for VMware solution users, machine certificates for machines on which services are running, and ESXi host certificates. VMCA can be used as is, or it can be used as an intermediary certificate authority.

Question 13

VMware Authentication Framework Daemon (VMAFD)

Answer 13

Includes VMware Endpoint Certificate Store (VECS) and several internal authentication services.

Question 14

DCUI?

Answer 14

Direct Console User Interface

Allows you to interact with an ESXi host from the local console host using text-based menus

Question 15

VPXA?

Question 16

Storage Filters:

config.vpxd.filter.vmfsFilter

(VMFS filter)

Answer 16

Hides storage devices (LUNs) that are used by a VMFS datastore on any host managed by vCenter Server.

Question 17

Storage Filters:

config.vpxd.filter.rdmFilter

(RDM filter)

Answer 17

Hides storage devices (LUNs) that are used by an RDM on any host managed by vCenter Server.

Question 18

Storage Filters:

config.vpxd.filter.sameHostsAndTransportsFilter

(Same Hosts and Transports filter)

Answer 18

Hides storage devices (LUNs) that are ineligible for use as VMFS datastore extents because of incompatibility with the selected datastore. Hides LUNs that are not exposed to all hosts that share the original datastore. Hides LUNs that use a storage type (such as Fibre Channel, iSCSI, or local) that is different from the original datastore.

Question 19

Storage Filters:

config.vpxd.filter.hostRescanFilter

(Host Rescan filter)

Answer 19

Automatically rescans and updates VMFS datastores following datastore management operations. If you present a new LUN to a host or a cluster, the hosts automatically perform a rescan, regardless of this setting.

Question 20

Improved DRS:

Answer 20

Now using a workload centric approach for efficient resource allocation and live migration of workloads, the improved DRS concentrates less on the ESXi host utilization and prioritizes the VM condition – think of it as how “happy” your virtual machine is. The VM DRS score is calculated every minute, allowing vSphere to provide a much more granular optimization of resources. For more information, read the white paper: Load Balancing Performance of DRS in vSphere 7.0.

Question 21

Large application vMotion:

Answer 21

vSphere admins can extend vSphere’s vMotion capability to large workloads such as SAP HANA and Oracle back ends. Previously, these workloads necessitated a longer stun-time during the switchover phase. With vSphere 7 and the greatly improved vMotion logic to transfer only those pages that are desired by the workload, stun time is reduced drastically for large workloads. For more information, read the white paper: vMotion Innovations in vSphere 7.0 U1.

Question 22

Assignable Hardware:

Answer 22

With vSphere 7, vSphere admins can provision efficient pools of accelerated hardware for AI/ML applications with supported GPUs. Assignable Hardware will now interact with DRS when that VM is powered on (initial placement) to find an ESXi host that has such a device available, claim that device, and register the VM to that host. If there is a host failure and vSphere HA kicks in, Assignable Hardware also allows for that VM to be restarted on a suitable host with the required hardware available.

Question 23

Precision Time Protocol (PTP):

Answer 23

vSphere 7 delivers software timestamp based PTP support for applications that need millisecond-level time accuracy.