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Correct Answer: ABC

Validate that each troubleshooting step below is true for your environment. Each step will provide instructions or a link to a document, in order to eliminate possible causes and take corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Do not skip a step.

1.

Verify if the slow deployment is specific to one template or if it affects all templates. To properly test this, VMware recommends to create a brand new template and test the deployment. This provides a clean test of the environment. For more information if template deployment is slow for a single template, see Deploying a single template is slow in vCenter Server (1004028).

2.

If you are using ESX (not applicable to ESXi), verify that no processes are over utilizing the resources on the ESX Service Console. For more information, see Checking for resource starvation of the ESX Service Console (1003496).

3.

Verify that the network configuration on the ESX/ESXi host is optimized for the best performance, including speed and duplex settings. For more information, see Configuring the speed and duplex of an ESX/ESXi host network adapter (1004089).

4.

Verify that the firmware on the RAID controller or HBA is up to date. For more information, see Checking your firmware and BIOS levels to ensure compatibility with ESX/ESXi (1037257).

5.

Verify that the local storage or SAN array is configured correctly. For more information, see Slow ESX/ ESXi performance caused by misconfigured local storage or SAN array (1006602).

6.

Verify on ESX/ESXi 4.1 and above if the storage array devices in the environment support the hardware acceleration functionality and if they are responding correctly to VAAI primitives. If there is no VAAI support on the array cloning or Storage vMotion may fail at 18%. For more information see Cloning or Storage vMotion fails at 18% with the error: Failed to clone: Connection timed out (1029244).

For further information on VAAI, see:

1.

vStorage APIs for Array Integration FAQ (1021976)

2.

Disabling the VAAI functionality in ESX/ESXi (1033665)

Note: If your problem still exists after trying the steps in this article, please:

1.

Gather the VMware Support Script Data. For more information, see Collecting diagnostic information for VMware products (1008524).

2.

File a support request with VMware Support and note this KB Article ID in the problem description. For more information, see How to Submit a Support Request.

Link: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1004002

Correct Answer: AB

Explanation: To verify that the DNS information in /etc/resolv.conf is correct for your environment, run the

command:

[root@server root]# cat /etc/resolv.conf

Run vicfg-dns without command-specific options to display DNS properties for the specified server.

vicfg-dns

The information includes the host name, domain name, DHCP setting (true or false), and DNS servers on

the ESXi host.

Reference: https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vcli.examples.doc%

2Fcli_manage_networks.11.8.html

https://kb.vmware.com/selfservice/microsites/search.do?

language=en_USandcmd=displayKCandexternalId=1003796

Correct Answer: B

PoRT 22 SSH on ESXi allowed : "Allow connections from any IP address," or, you can select "Only allow connections from the following networks" and enter an IP address or subnet. You can enter multiple IP addresses and subnets, separated with a comma. By default, there is a set of predefined firewall rules that can be enabled/disabled for the ESXi host from the vSphere Client. These firewall services can be enabled/disabled for the defined ports (UDP/TCP) from the vSphere Client. However, if you need to enable the service on a protocol that is not defined, you must create new firewall rules from the command line. For example, the DNS Client service can be enabled/disabled only on UDP port 53.

To enable DNS for TCP:

Open an SSH connection to the host. For more information, see Using ESXi Shell in ESXi 5.0 and 6.0

(2004746).

List the firewall rules by running the command:

# esxcli network firewall ruleset list

https://kb.vmware.com/selfservice/microsites/search.do?

language=en_USandcmd=displayKCandexternalId=2008226