GoConqr has a new look! Let us know what you think.

Sign up free

Flashcards

10 - Azure virtual machines

Archimed Nemes Azure AZ-104 Easy English 65 cards

Cards in this deck (65)

  1. 1Why would you choose a virtual machine?you'll choose a virtual machine if you need more control over the computing environment than the choices such as App Service or Cloud Services offer.
  2. 2What does Azure VM prrovide you with?Azure Virtual Machines provide you with an operating system, storage, and networking capabilities and can run a wide range of applications.
  3. 3Where should you start planning VM from?From network
  4. 4What are virtual networks used in Azure for?Virtual networks (VNets) are used in Azure to provide private connectivity between Azure Virtual Machines and other Azure services.
  5. 5What is second step in configuring VM?Name VM
  6. 6What is max length of a name of VM?15
  7. 7What is accepted convention for naming VM?envirronment (dev, QA etc), location, instance(if you have more than one), product or service and role
  8. 8What is third steo in configuring VM?Location
  9. 9What are cost type for every VM?Compute costs and storage costs
  10. 10How compute costs are charged and paid?Compute expenses are priced on a per-hour basis but billed on a per-minute basis. For example, you are only charged for 55 minutes of usage if the VM is deployed for 55 minutes.
  11. 11How do hourly prices vary?The hourly price varies based on the VM size and OS you select. The cost for a VM includes the charge for the Windows operating system. Linux-based instances are cheaper because there is no operating system license charge.
  12. 12How are storage costs are charged?You are charged separately for the storage the VM uses. The status of the VM has no relation to the storage charges. Even when a VM is stopped/deallocated, you are charged for the storage used by the disks.
  13. 13Which are options for compute costs?Consumption based and Reserved VM instances
  14. 14Explain consumption based option.With the consumption-based option, you pay for compute capacity by the second. You're able to increase or decrease compute capacity on demand and start or stop at any time.
  15. 15When consumption based option should be chosen?Use this option if you run applications with short-term or unpredictable workloads that cannot be interrupted. For example, if you are doing a quick test, or developing an app in a VM, this would be the appropriate option.
  16. 16Explain Reserved VM instances option.The Reserved Virtual Machine Instances (RI) option is an advance purchase of a virtual machine for one or three years in a specified region. The commitment is made up front, and in return, you get up to 72% price savings compared to pay-as-you-go pricing.
  17. 17When should you choose Reserved VM instances?Use this option if the VM has to run continuously, or you need budget predictability, and you can commit to using the VM for at least a year.
  18. 18What is the next step after location in VM configuration?Size of VM
  19. 19What is next step in VM configuration after VM size?VM storage
  20. 20How many virtual disk should Azure VM have at least?At least two disks - operating disk and temporary disk.
    They can also have data disk
  21. 21What does OS disk have?OS disk has a pre-installed OS, which was selected when the VM was created. It’s registered as a SATA drive and labeled as the C: drive by default.
  22. 22Explain temporrrrary disk.The temporary disk provides short-term storage for applications and processes and is intended to only store data such as page or swap files. Data on the temporary disk may be lost during a maintenance event or when you redeploy a VM.
  23. 23When data may or not may persist in temp VM disk?During a standard reboot of the VM, the data on the temporary drive should persist. However, there are cases where the data may not persist, such as moving to a new host.
  24. 24How VM disk is labeled in Windows VM?disk is labeled as the D: drive by default and it used for storing pagefile.sys.
  25. 25How is temo disk labeled in Linux VM?the disk is typically /dev/sdb and is formatted and mounted to /mnt by the Azure Linux Agent.
  26. 26In what forrmat disks are stored?VHD
  27. 27What is data disk?A data disk is a managed disk that's attached to a virtual machine to store application data, or other data you need to keep
  28. 28How data disks are registered and labeled?Data disks are registered as SCSI drives and are labeled with a letter that you choose.
  29. 29Where VM disks that use Premium Storage store data?On solid-state drives - SSD
  30. 30What is max number of I/O operations with Premium Storage?With Premium Storage, your applications can achieve 80,000 I/O operations per second (IOPS) per VM
  31. 31What is max disk throughput that you can achieve with Premium storage?2,000 megabytes per second (MB/s) per VM.
  32. 32How much storage per VM is provided by Premium storage?Using multiple disks gives your applications up to 256 TB of storage per VM.
  33. 33What are options for creating premium storage disks?Unmanaged and managed disks
  34. 34Explain unmanaged disks.In an unmanaged disk, you manage the storage accounts that you use to store the virtual hard disk (VHD) files that correspond to your VM disks.
  35. 35In what format VHD files are stored?VHD files are stored as page blobs in Azure storage accounts.
  36. 36What is managed disk?An Azure-managed disk is a virtual hard disk (VHD).
  37. 37In what format Azure-managed disks are stored?Azure-managed disks are stored as page blobs, which are a random IO storage object in Azure.
  38. 38Why do we call it managed disk?We call a managed disk ‘managed’ because it is an abstraction over page blobs, blob containers, and Azure storage accounts.
  39. 39What is max you do on ypur part with managed disk?With managed disks, all you have to do is provision the disk, and Azure takes care of the rest. When you select to use Azure-managed disks with your workloads, Azure creates and manages the disk for you.
  40. 40Which are available managed disk types?Ultra Solid State Drives (SSD), Premium SSD, Standard SSD, and Standard Hard Disk Drives (HDD).
  41. 41Where is data stored in Standard storage?On HDD
  42. 42What type of dis is required for single instance VM SLA?Managed disks
  43. 43How do you connect to Windows based VM?You'll use the remote desktop client to connect to the Windows-based VM hosted on Azure.
  44. 44How do you connect Linux based VM?To connect to a Linux-based VM, you need a secure shell protocol (SSH) client.
  45. 45What is Bastion?The Azure Bastion service is a new fully platform-managed PaaS service that you provision inside your virtual network. It provides secure and seamless RDP/SSH connectivity to your virtual machines directly in the Azure portal over SSL.
  46. 46What don't you need when you connect with Bastion?When you connect via Azure Bastion, your virtual machines do not need a public IP address.
  47. 47How can you connect to VM with Bastion?With Azure Bastion, you connect to the virtual machine directly from the Azure portal. You don't need an additional client, agent, or piece of software.
  48. 48In which ways can you connect and manage Windows-based VM?Remote Desktop Protocol
    Windows Remote Management
  49. 49What happend when you push connect button in Remote connection thorugh RDP?After you click this button, the portal will automatically provision an RDP file, which you can either open or download.
  50. 50What does opening RDP file initiate?Opening the file initiates an RDP connection to the corresponding VM. You will get a warning that the RDP file is from an unknown publisher. Certificate warnings are expected.
  51. 51Which is Azure Power shell command for RDP connection?Get-AzRemoteDesktopFile
  52. 52Explain Windows Remote Management?Windows Remote Management (WinRM) allows you to establish a command-line session to an Azure VM that runs any supported version of Windows. You can also use WinRM to run noninteractive Windows PowerShell scripts.
  53. 53How Windows RM provide additional security?WinRM facilitates additional session security by using certificates.
  54. 54What can you do prior to establishing a session with Windows RM?You can upload a certificate that you intend to use to Azure Key Vault prior to establishing a session.
  55. 55What is first 2 steps pf connection via Windows RM?Creating a key vault.
    Creating a self-signed certificate.
  56. 56What is 3rd step of setting up Windows RM connectivity?Uploading the certificate to the key vault.
  57. 57What is 4th step of connecting via Windows RM?Identifying the URL of the certificate uploaded to the key vault.
  58. 58What is fifth step of setting up Windows RM connectivity?Referencing the URL in the Azure VM configuration.
  59. 59Which is default port number for WinRM?5986.
    Ensure whatever port you are using is not blocked by network security group rules.
  60. 60How can you authenticate when you create Linux VM?When you create a Linux VM, you can decide to authenticate with an SSH public key or Password.
  61. 61Why using passwords with SSH connection is not insecure?Although SSH itself provides an encrypted connection, using passwords with SSH connections still leaves the VM vulnerable to brute-force attacks or guessing of passwords.
  62. 62Explain public-private key security.The public key is placed on your Linux VM, or any other service that you wish to use with public-key cryptography.
    The private key remains on your local system. Protect this private key. Do not share it.
  63. 63Explain how SSH client can connect to Linux VM with public-private key.When you use an SSH client to connect to your Linux VM (which has the public key), the remote VM tests the client to make sure it possesses the private key. If the client has the private key, it's granted access to the VM.
  64. 64Can you use a single public-private key pair to access multiple Azure VMs and services?Yes
  65. 65What is requied key length and format?Azure currently requires at least a 2048-bit key length and the SSH-RSA format for public and private keys.

Information

Description
Easy Azure AZ-104 Flashcards on 10 - Azure virtual machines, created by Archimed Nemes on 11/11/2021.
Created by
Archimed Nemes
Views
0
Rating

More on Microsoft Azure

Feedback

What is it about?

What do you think of the new look?

How do you like it?