Practice Test
True or False: It is not possible to resize the existing VM in Azure.
- True
- False
Answer: False
Explanation: Azure does offer the functionality to resize an existing VM in accordance with the requirements.
True or False: The burstable B-series are the only virtual machines in Azure that can store data
- True
- False
Answer: False
Explanation: In Azure, all types of virtual machines have the capacity to store data, not just the B-series.
Which of these series of VMs in Azure are optimized for memory-intensive workloads?
- a) D-series
- b) E-series
- c) B-series
- d) F-series
Answer: b) E-series
Explanation: E-series VMs are optimized for memory-intensive workloads.
Which of these series of VMs in Azure are optimized for compute-intensive workloads?
- a) D-series
- b) E-series
- c) F-series
- d) B-series
Answer: c) F-series
Explanation: F-series VMs are optimized for compute-intensive workloads.
True or False: All VM types have the same number of maximum data disks.
- True
- False
Answer: False
Explanation: The number of maximum data disks varies among VM types.
True or False: Only the higher series of VMs in Azure have the capacity to do CPU Bursting.
- True
- False
Answer: False
Explanation: Azure provides CPU bursting capacity to small and medium sizes of B-series VMs. Intermediate sizes have constant performance.
In Azure, which type of VM uses solid state drives (SSDs)?
- a) B-series
- b) Ds-series
- c) F-series
- d) All of the above
Answer: b) Ds-series
Explanation: Ds-series VMs in Azure use premium solid state drives (SSDs).
All D Series virtual machines in Azure come with what feature?
- a) Temporary storage
- b) Persistent storage
- c) CPU bursting
- d) All of the above
Answer: a) Temporary storage
Explanation: All D Series virtual machines come standard with a feature for temporary storage.
The ___ VM Sizes in Azure use hardware that is offloaded to a SmartNIC at high speed while maintaining all the familiar Azure Load Balancer capabilities.
- a) Da Series
- b) Ea Series
- c) Fa Series
- d) Ba series
Answer: a) Da Series
Explanation: Da v3 and Das v3 VM sizes feature Azure’s deployment of SmartNICs, delivering both software-defined networking and accelerated computing.
Which one of these can be done when a VM is resized?
- a) Retain the OS disk
- b) Retain the data disks
- c) Retain the public IP address
- d) All of the above
Answer: d) All of the above
Explanation: When a VM is resized, you can retain the OS disk, the data disks as well as the public IP address.
True or False: Azure offers a preview feature to resize a VM to a size that is not available in the current hardware cluster.
- True
- False
Answer: True
Explanation: Azure offers a feature to resize a VM to a size that is not available in the current hardware cluster, but it is in preview stage.
What feature of the Azure portal allows you to stop a VM and move it to a new size?
Answer: Resize
Explanation: The Resize feature allows you to stop a VM and change its size.
True or False: The price of VM in Azure always decreases when you downsize the VM.
- True
- False
Answer: False
Explanation: The price depends not only on the size of the VM but also on other factors such as region, OS type, tier, etc.
Which series of VMs in Azure is best suited for applications that require low latency, high-speed storage?
- a) B-series
- b) Fs-series
- c) Es-series
- d) L-series
Answer: d) L-series
Explanation: The L-series is storage optimized VM and is best suited for applications that require low latency, high-speed storage.
What type of virtual machine provides a high disk throughput and IO, and is suitable for Big Data, SQL, and NoSQL databases?
- a) A-series
- b) M-series
- c) L-series
- d) D-series
Answer: c) L-series
Explanation: L-series virtual machines are storage optimized sizes that are great for low latency, high disk throughput, and most disk IOPS.
Interview Questions
What does VM size in Azure refer to?
VM size in Azure determines the number of CPU cores, the memory capacity, and the disk size that is allocated to a new VM.
What is the purpose of resizing a VM in Azure?
Resizing a VM in Azure allows you to obtain more CPU cores, more memory, or a larger disk size and to help your application handle more load.
Can you change the size of an existing VM in Azure?
Yes, you can change the size of an existing VM in Azure using Azure Management console or Azure CLI commands. However, the VM may need to be restarted.
How can you determine the size of a VM available in your region in Azure?
You can use the Azure portal, Azure CLI, or Azure PowerShell to determine the size of a VM available in your region.
Which tool is used to resize a VM in Azure?
You can resize a VM in Azure using the Azure portal, Azure CLI, or Azure PowerShell.
What is the effect of resizing a VM on the cost in Azure?
The cost of a VM in Azure depends on the size of the VM. If you increase the size of the VM, the cost of the VM will increase.
Is it possible to resize a VM while it is running in Azure?
Yes, it can be resized while it is running but the VM would need to be restarted, which would cause a downtime for your application.
What happens to the data stored in a VM when you resize it in Azure?
When you resize a VM, the data stored in the VM’s disks is not affected.
Are there any limitations to increase or decrease the size of a VM in Azure?
Yes, the ability to increase or decrease the size depends on the availability of the desired size in the Azure hardware cluster where the VM is currently deployed.
What are the parameters that one should consider while selecting the size of a VM in Azure?
When selecting the size of a VM in Azure, one should consider factors such as the number of cores, memory, storage capacity, and the IOPS (Input Output operations per Second) limit.
What is A-series, D-series, and G-series in terms of Azure VM sizes?
These are different categories of VM sizes in Azure. A-series VMs are economical and suitable for development workloads, D-series VMs are designed for applications that require higher compute power and temporary disk performance, and G-series VMs are designed for applications that require large amounts of memory and high disk throughput.
How are the VM sizes in Azure categorized?
VM sizes in Azure are categorized into general purpose, compute optimized, memory optimized, storage optimized, GPU, and high performance compute.
How can Azure Advisor help in selecting the VM size?
Azure Advisor can make recommendations for appropriately sizing VMs based on the usage patterns.
How can you decrease the cost without compromising the performance of a VM in Azure?
You can decrease the cost without compromising the VM performance by selecting the correct VM size based on your application’s requirements and by shutting down the VM during off-peak hours.
Is it possible to resize a VM from a smaller to a larger size in the Azure without any downtime?
No, resizing a VM in Azure from a smaller to a larger size might require a VM reboot, which can lead to minimal downtime. However, a planned failover and update strategy can help in avoiding or minimizing the downtime.
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