Question 1

Where can you view the DRS "Current host load standard deviation" value?
A)From the control panel of the vCenter server.
B)From the summary page of the vSphere cluster.
C)From the DRS tab of the vSphere cluster.
D)From the resource allocation tab of the vSphere cluster.

Accepted Answer

You can view the DRS "Current host load standard deviation" value from the DRS tab of the vSphere cluster. This is a measure of how well the cluster's virtual machine load is distributed among the cluster hosts.

Question 2

VMware uses colours to depict alarm severity. Please choose the three colours it uses.
A)Amber
B)Yellow
C)Green
D)Red
E)Orange

Accepted Answer

VMware uses the following three colours to depict alarm severity: green, yellow and red. Green indicates a normal operational state. Yellow indicates a warning. Red indicates an alert. The underlying thresholds can be altered to suite your environment.

Question 3

An alarms can be configured to trigger an action when a certain state change occurs. Of the state changes below, please select the two that can trigger an action.
A)Green to Yellow
B)Red to Green
C)Red to Yellow
D)Green to Red.

Accepted Answer

These state changes that can trigger an action are: green to yellow, yellow to red, red to yellow and yellow to green. The thresholds for the state changes can be altered to suite your environment.

Question 4

Which of the following is NOT a default VMware alarm?
A)Cannot Connect to Network
B)Host Battery Status
C)Battery Acid Low
D)Exit Standby Error

Accepted Answer

Battery Acid Low is not a default VMware alarm. VMware provides preconfigured alarms for the vCenter Server system that trigger automatically when problems are detected. In order to utilize these alarms, you have to configure the trigger action.

Question 5

Of the options below, which are default vCenter alarms? Select two.
A)Host Memory Usage
B)Host Corruption
C)Host Storage Status
D)Host Deferred

Accepted Answer

Host Memory Usage and Host Storage Status are two examples of default vCenter alarms. There are a plethora of default vCenter alarms configured to capture fault conditions from most aspects of vCenter. These alarms are defined at the root of vCenter and can only be altered from the root of vCenter.

Question 6

Of the following options, which are default collection intervals for vCenter Server statistics? Choose three.
A)Hour
B)Day
C)Week
D)Month
E)Quarter

Accepted Answer

The default collection intervals for vCenter Server statistics are: day, week, month and year. These intervals can be customised from the vSphere client by going to Administration > vCenter Server Settings > Statistics. The higher the collection value, the larger the vCenter database will become. There is a rudimentary calculator to aid in database sizing in the same section.

Question 7

What is the default real time collection interval for ESX host statistics?
A)20 seconds
B)1 minute
C)5 seconds
D)2 seconds
E)1 hour

Accepted Answer

The default real time collection interval for ESX host statistics is 20 seconds. For ESX 2.0 hosts, this is 60 seconds. Real-time statistics are stored in a flat file on ESX/ESXi hosts and in the memory on the vCenter server. ESX/i hosts collect real-time statistics only for the host or the virtual machines available on the host.

Question 8

John, a VMware administrator, has noticed a massive increase in the vCenter database size. What is also alarming is that the size is continually increasing at an alarming rate. What is a possible cause for this increase?
A)The database has a simple recovery model.
B)The database backup failed.
C)The vCenter statistics level is set to 4.

Accepted Answer

A possible cause for the vCenter database size increase is that the vCenter statistics level is set to 4. This captures all vCenter metrics and should only be used for debugging purposes. If a database backup had failed, then the log files would have increased.

Question 9

What vCenter statistics level should be set in order to capture device metrics?
A)1
B)2
C)3

Accepted Answer

In order to capture device metrics in vCenter, the statistics should be set to level 3. This level of analysis should not be used for an extended period of time, as it will increase the vCenter database size considerably. The statistics levels can be set per collection interval from the Statistics section of vCenter Server settings.

Question 10

How many years are statistics saved in the vCenter database by default?
A)3
B)2
C)1
D)4

Accepted Answer

By default statistics are saved in the vCenter database for one year. Statistics can be saved for a maximum of five years. If you need to save statistics for longer than five years, then you will have to employ some method of external archiving.

Question 11

John, a VMware consultant, has been given six months of vCenter data exports. He has been instructed to analyze the data, as the customer is experiencing performance-related problems. What client tool could John use to analyse the data set?
A)Windows Task Manager
B)Windows Control Panel
C)Windows Perfmon
D)Windows Perftool

Accepted Answer

Windows Perfmon can be used to analyze exported data sets from vCenter Server systems. Performance statistics can be exported from the Performance tab in the vSphere client or can be captured from the ESX host itself using esxtop in batch mode.

Question 12

Alex, a VMware administrator, is experiencing application performance issues on a virtual machine. The ESX host has 2 dual-core CPUs and 64 GB of RAM. It currently hosts 8 virtual machines. The machine with performance issues has 4 vCPUs and 4 GB of RAM. The other 7 machines each have 1 vCPU and 4 GB of RAM. Select a possible cause of the performance issues from the choices below.
A)There is memory contention on the ESX host.
B)The virtual machine has a multi-threaded application.
C)The host only has four 1Gb Ethernet cards.

Accepted Answer

The virtual machine is experiencing application performance problems due to the fact that the virtual machine has the same number of CPUs as the host. Every time the application requests a multi thread to be processed, the host must have 4 available slots available to schedule. Recuing the virtual machine vCPU count to 2 would help.

Question 13

What is the default collection frequency for a one-year collection interval?
A)1 month
B)1 year
C)1 day
D)1 week

Accepted Answer

The default collection frequency for a one-year collection interval is one day. Monthly statistics are rolled up to create a single data point per day. This gives 365 data points for a year. These defaults can be altered by changing the statistics levels in the vCenter Server settings.

Question 14

John, a VMware administrator, is connected directly to an ESX host using the vSphere client. He is trying to change the default interval that statistics are captured for. He is not able to do so. What is a possible reason for this?
A)John does not know the vpxuser password.
B)John is using the wrong version of the vSphere client.
C)The statistics in question can only be updated from the vCenter Server system.
D)John doesn't know where to find the settings.

Accepted Answer

Statistic-gathering metrics and information can only be changed from the vCenter Server settings. The settings cannot be changed on a host-by-host case. To change the settings, go to Administration > vCenter Server Settings > Statistics.

Quiz 6: Troubleshooting

Where can you view the DRS "Current host load standard deviation" value?

VMware uses colours to depict alarm severity. Please choose the three colours it uses.

An alarms can be configured to trigger an action when a certain state change occurs. Of the state changes below, please select the two that can trigger an action.

Which of the following is NOT a default VMware alarm?

Of the options below, which are default vCenter alarms? Select two.

Of the following options, which are default collection intervals for vCenter Server statistics? Choose three.

What is the default real time collection interval for ESX host statistics?

John, a VMware administrator, has noticed a massive increase in the vCenter database size. What is also alarming is that the size is continually increasing at an alarming rate. What is a possible cause for this increase?

What vCenter statistics level should be set in order to capture device metrics?

How many years are statistics saved in the vCenter database by default?

John, a VMware consultant, has been given six months of vCenter data exports. He has been instructed to analyze the data, as the customer is experiencing performance-related problems. What client tool could John use to analyse the data set?

What is the default collection frequency for a one-year collection interval?

John, a VMware administrator, is connected directly to an ESX host using the vSphere client. He is trying to change the default interval that statistics are captured for. He is not able to do so. What is a possible reason for this?