Update azure-vm-certification-faq.yml

iteration 1

Author: prmitiki

articles/marketplace/azure-vm-certification-faq.yml

@@ -482,6 +482,29 @@ sections:
           1. Generalize the VM, take the image VHD, and stop the VM.
           
           1. Resubmit the generalized image.
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+      - question: |
+          Network Virtual Appliance validations
+        answer: |
+          During Marketplace image certification, a VM offer that is a Network Virtual Appliance (NVA) is validated using tests that are generic to any VM offer, as well as NVA testcases listed in the table below.  The goal of these NVA specific validations is to verify how well the NVA image orchestrates with SDN stack.
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+          |Test case|Steps to run test case|Solution|
+          |---|---|---|
+          |VHD Access|Ensure the correct SAS URL for the VHD is provided, the permissions are set to allow access and the NVA image is generalized|Verify the NVA image and the URL provided.|
+          |NVA Deployment|Deploy a VM using the NVA with 1 NIC. Verify that the deployment is completed in 20 minutes.|If the deployment is not completed within 20 minutes, then verify the NVA image.|
+|NVA Reboot|Deploy a VM using the NVA with 1 NIC. Then, reboot it. Verify that the status of the VM is ‘Running’ and the NIC port 22 is reachable using Netcat command. For further information about Netcat command see next section below. Repeat the test with 3 NICs, and 7 NICs.|If VM doesn’t come up after reboot, then there may be an issue with the NVA image. 
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+If the Netcat test fails, then it could be because the NIC failed to come up after the reboot even though the VM was running. Please wait for few minutes and try again. If after 20 mins it still fails, then there may be an issue with the NVA image|
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       - question: |
           Request an exception on VM images for select tests