Lesson 9: Creating and Configuring Virtual Networks

Question 1

Virtual Switch

Answer 1

simulates a Layer 2 physical switch.

Question 2

A hyper-v virtual switch can have ____ ports

Answer 2

Unlimited

Question 3

When you create an external nework virtual switch, what changes on the host machine?

Answer 3

A new “network adapter” is added, described as a switch. The physical network adapter is bound to the second, new adapter.

Question 4

External network switch

Answer 4

virtual switch in hyper-v that’s connected to the outside of the host machine. – Connected to the broader network

Question 5

Internal Network Switch

Answer 5

A virtual switch that connects VMs together and with their host partition.

Question 6

Private network switch

Answer 6

A virtual switch that only connects child partitions / VMs together. The host machine cannot access the VMs.

Question 7

MAC

Answer 7

Media Access Control

Question 8

Length of a MAC address

Answer 8

6 bytes (48 bits). First 3 bytes is the OUI (organizationally unique ID). Last 3 bytes IDs the adapter.

Question 9

What is the Microsoft OUI?

Answer 9

00-15-5D

Question 10

What is the pattern of a hyper-v VM MAC address?

Answer 10

Bytes 1-3 = The MS OUI
Bytes 4-5 = Last two bytes of the IP, in hex
Byte 6 = Assigned hex between 00 and FF (256 possibilities)

Question 11

How many virtual network adapters can you attach to a hyper-v VM

Answer 11

12:
8 synthetic
4 emulated

Question 12

Synthetic Adapter

Answer 12

Default & best type of network adapter. Communicates via VMBus instead of through the hypervisor, which allows for faster communications

Question 13

VMBus

Answer 13

High-speed conduit that allows virtual devices to communicate with the parent partition without going through the hypervisor.

Question 14

Virtual Switches reside where?

Answer 14

On the parent partition of the hypervisor

Question 15

Synthetic Adapters depend on what to run?

Answer 15

The guest integration services package. A VM without this installed cannot communicate using a synthetic adapter

Question 16

Emulated adapter AKA

Answer 16

Legacy Adapter

Question 17

Emulated adapter

Answer 17

Standard network adapter driver that communicates with the parent partition directly via the hypervisor. This requires requests to filter down through the TCP/IP stack of the guest, to the hypervisor, back up to the parent’s application layer, and down through its TCP/IP stack. So slower…

Question 18

Why would you use an emulated adapter?

Answer 18

To boot in a PXE environment

or if your guest OS isn’t running a guest integration services package

Question 19

PXE

Answer 19

Preboot eXecution Environment.

Used to deploy an OS on machine boot