Questions and Answers
What is the main function of a DHCP Relay agent in a network?
Listens for DHCP Broadcasts from clients and forwards them to DHCP Servers
In the context of DHCP, what does a DHCPDISCOVER packet represent?
Client requesting an IP address
What does a VPN server primarily do during the establishment of a VPN connection?
Authenticates and authorizes the VPN client
What is the role of a VPN client in a VPN connection?
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During a DHCP process, what does a DHCPOFFER message signify?
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In a failover cluster in Windows Server 2012, what does redundancy refer to?
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Which service in Windows is mainly responsible for automated installations of Windows operating systems?
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During a VPN connection, what is the purpose of tunneling protocols?
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What does a DHCPACK message indicate in a DHCP process?
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Study Notes
WDS Deployment Server Requirements
- A WDS deployment server requires a DHCP server, DNS server, Active Directory - Domain Services, and an NTFS partition to store images.
How WDS Works
- A WDS client searches for a WDS server, and the WDS server is connected to a DHCP server, DNS server, and Domain server.
- The WDS server has an IP address of 10.0.0.4, and the other servers have IP addresses of 10.0.0.1, 10.0.0.2, and 10.0.0.3 respectively.
Types of WDS Clients
- A Known Client is a computer whose computer account has been pre-created (pre-staged) in Active Directory.
- An Unknown Client is a computer whose computer account has not been pre-staged in Active Directory.
Types of WDS Images
- A Boot Image is a WIM file used to boot a computer to begin the deployment of an OS.
- An Install Image is an image of Windows 10 or Windows Server 2012 OS that is deployed onto a client computer.
- A Capture Image is a special boot image used to boot a master computer and upload an image to a WDS server.
- A Discover Image is a boot image used to deploy an install image onto a computer that is not PXE enabled.
Hyper-V
- Hyper-V is the hardware virtualization role available in Windows Server 2012.
- It provides virtual machines with direct access to the virtualization server's hardware.
- Hardware virtualization is in contrast to software virtualization products like Microsoft Virtual Server 2012 R2.
Hyper-V Storage Options
- Dynamically expanding VHDs
- Fixed-size VHDs
- Direct-attached storage
Hyper-V Pass-Through Disk
- Hyper-V allows virtual machines to access storage mapped directly to the Hyper-V server.
- The storage can be a physical disk internal to the Hyper-V server or a Storage Area Network (SAN) Logical Unit (LUN) mapped to the Hyper-V server.
- The storage must be placed in an Offline state from the Hyper-V server perspective to ensure the Guest has exclusive access.
Hyper-V Differencing VHDs
- Differencing disks reduce space used by storage at the cost of performance.
- Multiple differencing disks can be linked to a single parent disk.
- The parent disk cannot be modified.
- The Inspect Disk tool can be used to reconnect a differencing disk to a missing parent.
Hyper-V Virtual Switch
- External Virtual Switch: maps a network to a specific network adapter or network adapter team.
- Internal Virtual Switch: used for communication between virtual machines on the host and between the virtual machines and the host itself.
- Private Virtual Switch: used for communication between virtual machines, but not between the virtual machines and the host itself.
Routing
- A Router is a device used to communicate between two different networks.
- Routing is the process of sending data packets through the best path to reach the destination.
- A Default Gateway gives the exit point (or) entry point to reach the destination.
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