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NEW QUESTION 48
The company's IT strategy is to adopt innovative and emerging technologies such as software-defined storage solution. The IT team has decided to run their business-critical workloads on an all-flash Virtual SAN (vSAN) as it provides excellent performance.
The IT team has purchased servers that are compatible with vSAN. However, all the solid-state drives (SSD) in the servers are shown incorrectly as hard-disk drives (HDD) instead.
In addition, some of the solid-state drives (SSD) will be used for other purposes instead of vSAN and should not be part of the vSAN cluster. These are the requirements for the vSAN cluster:
* In each server, use the 3GB SSD as the cache tier and the 11GB SSD as the capacity tier
* As a result the vSAN cluster will use a total of six SSDs (three SSDs for caching and three SSDs for capacity
* Ensure all the disks that will be used for vSAN are shown correctly as SSDs
* Provide storage savings by using deduplication and compression.
Next, the IT team wants to improve the performance and availability of the business-critical workloads on the vSAN-datastore.
Ensure the following configurations will be applied on existing and new workloads located on vSAN-datastore:
Number of disk stripes per object: 2
Primary level of failures to tolerate: 2
Failure tolerance method: RAID-1 (Mirroring)
Force provisioning; Yes
The new configurations should be applied by default.
You may create new storage policy but do not edit the default vSAN storage policy as it may be used by other vSAN clusters in the future. Name the policy "New vSAN Default'.
Note: All tasks should be executed in PROD-A host cluster.

Answer:

Explanation:
VMware vSphere ESXi can use locally attached SSDs (Solid State Disk) and flash devices in multiple ways. Since SSDs offer much higher throughput and much lower latency than traditional magnetic hard disks the benefits are clear. While offering lower throughput and higher latency, flash devices such as USB or SATADOM can also be appropriate for some use cases. The potential drawback to using SSDs and flash device storage is that the endurance can be significantly less than traditional magnetic disks and it can vary based on the workload type as well as factors such as the drive capacity, underlying flash technology, etc.
This KB outlines the minimum SSD and flash device recommendations based on different technologies and use case scenarios.
SSD and Flash Device Use Cases
A non-exhaustive survey of various usage models in vSphere environment are listed below.
Host swap cache
This usage model has been supported since vSphere 5.1 for SATA and SCSI connected SSDs. USB and low end SATA or SCSI flash devices are not supported.
The workload is heavily influenced by the degree of host memory over commitment.
Regular datastore
A (local) SSD is used instead of a hard disk drive.
This usage model has been supported since vSphere 7.0 for SATA and SCSI connected SSDs.
There is currently no support for USB connected SSDs or for low end flash devices regardless of connection type.
vSphere Flash Read Cache (aka Virtual Flash)
This usage model has been supported since vSphere 5.5 for SATA and SCSI connected SSDs.
There is no support for USB connected SSDs or for low end flash devices.
vSAN
This usage model has been supported since vSphere 5.5 for SATA and SCSI SSDs. For more information, see the vSAN Hardware Quick Reference Guide.
vSphere ESXi Boot Disk
A USB flash drive or SATADOM or local SSD can be chosen as the install image for ESXi, the vSphere hypervisor, which then boots from the flash device.
This usage model has been supported since vSphere 3.5 for USB flash devices and vSphere 4.0 for SCSI/SATA connected devices.
Installation to SATA and SCSI connected SSD, SATADOM and flash devices creates a full install image which includes a logging partition (see below) whereas installation to a USB device creates a boot disk image without a logging partition.
vSphere ESXi Coredump device
The default size for the coredump partition is 2.5 GiB which is about 2.7 GB and the installer creates a coredump partition on the boot device device for vSphere 5.5 and above. After installation the partition can be resized if necessary using partedUtil. For more information, see the vSphere documentation.
Any SATADOM or SATA/SCSI SSD may be configured with a coredump partition.
This usage model has been supported from vSphere 3.5 for boot USB flash devices and since vSphere 4.0 for any SATA or SCSI connected SSD that is local.
This usage model also applies to Autodeploy hosts which have no boot disk.
vSphere ESXi Logging device
A SATADOM or local SATA/SCSI SSD is chosen as the location for the vSphere logging partition (/scratch partition). This partition may be but need not be on the boot disk and this applies to Autodeploy hosts which lack a boot disk.
This usage model has been supported since vSphere 7.0 for any SATA or SCSI connected SSD that is local. SATADOMs that meet the requirement set forth in Table 1 are also supported.
This usage model can be supported in a future release of vSphere for USB flash devices that meet the requirement set forth in Table 1.
SSD Endurance Criteria
The flash industry often uses Tera Bytes Written (TBW) as a benchmark for SSD endurance. TBW is the number of terabytes that can be written to the device over its useful life. Most devices have distinct TBW ratings for sequential and random IO workloads, with the latter being much lower due to Write Amplification Factor (WAF) (defined below). Other measures of endurance commonly used are DWPD (Drive Writes Per Day) and P/E (Program/Erase) cycles.
Conversion formulas are provided here:
Converting DWPD (Drive Writes Per Day) to TBW (Terabytes Written):
TBW = DWPD * Warranty (in Years) * 365 * Capacity (in GB) / 1,000 (GB per TB) Converting Flash P/E Cycles per Cell to TBW (Terabytes Written):
TBW = Capacity (in GB) * (P/E Cycles per Cell) / (1,000 (GB per TB) * WAF) WAF is a measure of the induced writes caused by inherent properties of flash technology. Due to the difference between the storage block size (512 bytes), the flash cell size (typically 4KiB or 8KiB bytes) and the minimum flash erase size of many cells one write can force a number of induced writes due to copies, garbage collection, etc. For sequential workloads typical WAFs fall in the range of single digits while for random workloads WAFs can approach or even exceed 100. Table 1 contains workload characterization for the various workloads excepting the Datastore and vSphere Flash Read Cache workloads which depend on the characteristics of the Virtual Machines workloads being run and thus cannot be characterized here. A WAF from the table can be used with the above P/E to TBW formula.

NEW QUESTION 49
You have just deployed a new vCenter Server Appliance. Vcsa0l
a. and are required to back up to configuration after deployment. To complete this task, perform an unencrypted backup of the vCenter Server Appliance using the following details:
* Use the FTP protocol to backup the appliance
* FTP Server Location: 172.20.10.10/
* FTP Username: administrator
* FTP Password: VMware1!
Note: Make sure you include the / at the end of the Server Location

Answer:

Explanation:
Prerequisites
You must have an FTP, FTPS, HTTP, HTTPS, or SCP server up and running with sufficient disk space to store the backup.
Dedicate a separate folder on your server for each file-based backup.
Procedure
In a Web browser, go to the vCenter Server Appliance Management Interface, https://appliance-IP-address-or-FQDN:5480.
Log in as root.
In the vCenter Server Appliance Management Interface, click Summary.
Click Backup.
The Backup Appliance wizard opens.
Enter the backup protocol and location details.
Option
Description
Backup protocol
Select the protocol to use to connect to your backup server. You can select FTP, FTPS, HTTP, HTTPS, or SCP.
For FTP, FTPS, HTTP, or HTTPS the path is relative to the home directory configured for the service. For SCP, the path is absolute to the remote systems root directory.
Backup location
Enter the server address and backup folder in which to store the backup files.
Port
Enter the default or custom port of the backup server.
User name
Enter a user name of a user with write privileges on the backup server.
Password
Enter the password of the user with write privileges on the backup server.
(Optional) Select Encrypt Backup Data to encrypt your backup file and enter a password for the encryption.
If you select to encrypt the backup data, you must use the encryption password for the restore procedure.
Click Next.
On the Select parts to backup page, review the data that is backed up by default.
(Optional) Select Stats, Events, and Tasks to back up additional historical data from the database.
(Optional) In the Description text box, enter a description of the backup and click Next.
On the Ready to complete page, review the summary information for the backup and click Finish.
The Backup Progress window opens and indicates the progress of the backup operation.
After the backup process finishes, click OK to close the Backup Progress window.
Results
You successfully created a backup file of the vCenter Server Appliance.

NEW QUESTION 50
A new internal network is required to isolate virtual machines for security analysis. The virtual machine (honeypot-01) should reside on a new virtual standard switch with the ability for all traffic on the switch to be monitored.
Add a new virtual switch to accommodate this requirement and configure (honeypot-01) to reside on this switch.
Use the following information to complete this task:
* ESXi host: esxi0la
* Standard Switch: Create a new Standard Switch
* Physical uplink: NO UPLINK
* Network Label: QUARANTINE
* VLAN: none specified

• A. Send us your suggestions.

Answer: A

NEW QUESTION 51
The IT Team recently implemented a Unified Communication Service to provide conferencing for the organization. The UCS Application server is running from a virtual machine named VM1-UCS. Due to the nature of the UCS. the traffic for VM1-UCS has a higher Class of Service (CoS) demand.
In order to meet demand bandwidth for VM1 hosting the UCS. you been have given the task to improve performance by isolating the traffic and configuring CoS for this VM.
Your first task is to connect VM1-UCS to the distributed port group. UCS-Portgroup.
Your second task is to tag and mark the traffic for VM1-UCS with the following parameters:
* Name: UCS Network Traffic
* CoS Value: 4
* DSCP Value: 34
* Traffic Direction: Ingress/Egress
* Traffic Qualifier: System Traffic - Virtual Machine
The IT Team noticed that some of the parameter where not available on the distributed switch. Troubleshoot why these settings are missing and fix it.

• A. Send us your suggestions.

Answer: A

NEW QUESTION 52
The security team has decided to follow the VMware-recommended best practices in the vSphere hardening guide.
esxi02b:
Your first task is to create a local user in esxi02b:
* Name: SpecialUser
* Role: Administrator
Your second task is to ensure that SpecialUser is the ONLY user who is able to SSH into esxi02b via Putty.
Your final task is to enforce a strict lockdown on esxi02b.
Your second task is to ensure that SpecialUser is the ONLY user who is able to SSH into esxi02b via Putty.
Your final task is to enforce a strict lockdown on esxi02b.

Answer:

Explanation:
Authentication and authorization govern access. vCenter Single Sign-On supports authentication, which means it determines whether a user can access vSphere components at all. Each user must also be authorized to view or manipulate vSphere objects.
vSphere supports several different authorization mechanisms, discussed in Understanding Authorization in vSphere. The focus of the information in this section is how the vCenter Server permission model works and how to perform user management tasks.
vCenter Server allows fine-grained control over authorization with permissions and roles. When you assign a permission to an object in the vCenter Server object hierarchy, you specify which user or group has which privileges on that object. To specify the privileges, you use roles, which are sets of privileges.
Initially, only the administrator user for the vCenter Single Sign-On domain, administrator@vsphere.local by default, is authorized to log in to the vCenter Server system. That user can then proceed as follows:
Add an identity source in which users and groups are defined to vCenter Single Sign-On. See the Platform Services Controller Administration documentation.
Give privileges to a user or group by selecting an object such as a virtual machine or a vCenter Server system and assigning a role on that object for the user or group.

NEW QUESTION 53
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