added VM mappings

Author: nicolehaugen

articles/lab-services/classroom-labs/administrator-guide.md

@@ -168,8 +168,8 @@ When administrators or lab creators create a classroom lab, they can choose from
 | ---- | ----- | ------ | ------------- |
 | Small| <ul><li>2 Cores</li><li>3.5 GB RAM</li> | [Standard_A2_v2](https://docs.microsoft.com/azure/virtual-machines/av2-series?toc=/azure/virtual-machines/linux/toc.json&bc=/azure/virtual-machines/linux/breadcrumb/toc.json) | This size is best suited for command line, opening web browser, low traffic web servers, small to medium databases. |
 | Medium | <ul><li>4 Cores</li><li>7 GB RAM</li> | [Standard_A4_v2](https://docs.microsoft.com/azure/virtual-machines/av2-series?toc=/azure/virtual-machines/linux/toc.json&bc=/azure/virtual-machines/linux/breadcrumb/toc.json) | This size is best suited for relational databases, in-memory caching, and analytics. |
-| Medium (Nested virtualization) | <ul><li>4 Cores</li><li>16 GB RAM</li></ul> | ToDo | This size is best suited for relational databases, in-memory caching, and analytics.  This size also supports nested virtualization. |
-| Large | <ul><li>8 Cores</li><li>32 GB RAM</li></ul>  | ToDo | This size is best suited for applications that need faster CPUs, better local disk performance, large databases, large memory caches.  This size also supports nested virtualization. |
+| Medium (Nested virtualization) | <ul><li>4 Cores</li><li>16 GB RAM</li></ul> | [Standard_DC4s_v2](https://docs.microsoft.com/azure/virtual-machines/dcv2-series?toc=/azure/virtual-machines/linux/toc.json&bc=/azure/virtual-machines/linux/breadcrumb/toc.json) | This size is best suited for relational databases, in-memory caching, and analytics.  This size also supports nested virtualization. |
+| Large | <ul><li>8 Cores</li><li>32 GB RAM</li></ul>  | [Standard_DC8_v2](https://docs.microsoft.com/azure/virtual-machines/dcv2-series?toc=/azure/virtual-machines/linux/toc.json&bc=/azure/virtual-machines/linux/breadcrumb/toc.json) | This size is best suited for applications that need faster CPUs, better local disk performance, large databases, large memory caches.  This size also supports nested virtualization. |
 | Small GPU (Visualization) | <ul><li>6 Cores</li><li>56 GB RAM</li>  | [Standard_NV6](https://docs.microsoft.com/azure/virtual-machines/nv-series) | This size is best suited for remote visualization, streaming, gaming, encoding using frameworks such as OpenGL and DirectX. |
 | Small GPU (Compute) | <ul><li>6 Cores</li><li>56 GB RAM</li></ul>  | [Standard_NC6](https://docs.microsoft.com/azure/virtual-machines/nc-series) |This size is best suited for computer-intensive applications like Artificial Intelligence and Deep Learning. |
 | Medium GPU (Visualization) | <ul><li>12 Cores</li><li>112 GB RAM</li></ul>  | [Standard_NC12](https://docs.microsoft.com/azure/virtual-machines/nc-series) | This size is best suited for remote visualization, streaming, gaming, encoding using frameworks such as OpenGL and DirectX. |