Author: admin

QUESTION 111
Your company has a remote office that contains 1,600 client computers on a single subnet.
You need to select a subnet mask for the network that will support all of the client computers. The solution must minimize the number of unused addresses. Which subnet mask should you select?

A.    255.255.248.0
B.    255.255.252.0
C.    255.255.254.0
D.    255.255.240.0

Answer: A
Explanation:
255.255.252.0 = 11111111.11111111.11111100.00000000 =>( 22 bits 1 .. 10 bits 0 ) => 1111111111 = 1023
255.255.254.0 = 11111111.11111111.11111110.00000000 =>( 23 bits 1 .. 9 bits 0 ) => 111111111 = 511
255.255.255.0 = 11111111.11111111.11111111.00000000 =>( 24 bits 1 .. 8 bits 0 ) => 11111111 = 255
255.255.255.128 = 11111111.11111111.11111111.10000000 =>( 25 bits 1 .. 7 bits 0 ) => 1111111 = 127
http://zeus.fh-brandenburg.de/~ihno/doc/lehre/internet/ip_eng.html

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QUESTION 101
Your network contains two Hyper-V hosts named Host1 and Host2. Host1 contains a virtual machine named VM1. Host2 contains a virtual machine named VM2. VM1 and VM2 run Windows Server 2012 R2. You install the Network Load Balancing feature on VM1 and VM2. You need to ensure that the virtual machines are configured to support Network Load Balancing (NLB). Which virtual machine settings should you configure on VM1 and VM2?

A.    Router guard
B.    DHCP guard
C.    Port mirroring
D.    MAC address

Answer: D
Explanation:
In Hyper-V, the VM host prevents dynamic MAC address updates as an extra layer of security in thedatacenter. This is because the VM may have full administrator rights, yet it may be untrusted in thedatacenter, for example when the VM hosting is provided by an independent hosting company. In this scenario,we need to make sure that one VM cannot cause a DOS or information disclosure attack against another VM. If a VM is able to spoof its MAC address, then it can spoof the MAC addresses of other VMs and impactother VMs on that host. The physical switches have similar protections and it is up to the admin to enable thatprotection or not. If you do not enable spoofing of MAC address prior to configuring NLB on the VM you could potentially haveproblems with the NLB cluster.
When configuring NLB in unicast mode on Hyper-V with enable spoofing of MAC Address disabled you maysee some of the following symptoms:
When initially configuring NLB you will lose network connectivity on the network adaptor NLB was configuredon.
?There will be an NLB error event in the Windows Event Log stating that the network adaptor does not supportdynamic MAC address updates.
After rebooting the server, NLB will appear to be bound to the network adapter, but the cluster VIP will nothave been added to the network adaptor.
?The cluster MAC address will still be the original MAC address associated with the network adaptor prior toconfiguring NLB. Use CMD>ipconfig /all to view the MAC address.
It should start with “02-BF-***”
If you ignore all previous symptoms and manually add the VIP you could get an IP conflict if there are othernodes in the cluster that have the same VIP.
With that said, to allow VM guests to run NLB you need to set the VM property for “Enable spoofing of MACAddress”.
To enable spoofing of MAC Addresses open the Hyper-V management console. Make sure the VM is stoppedopen the properties of the VM. Select the Network Adaptor for the NLB VM and check the “Enable spoofing ofMAC Address” and click OK. Then start the VM.

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QUESTION 91
You work as an administrator at L2P.com. The L2P.com network consists of a single domain named L2P.com. All servers on the L2P.com network have Windows Server 2008 R2 installed. Some of L2P.com’s workstations have Windows 7 installed, while the rest have Windows 8 installed.
After installing a new Windows Server 2012 computer in the L2P.com domain, you configure it to run the File and Storage Services server role. You are instructed to create a shared folder on the new server, and configure the use of Previous Versions for restoring files located in the shared folder.
Which of the following actions should you take?

A.    You should consider configuring the Shadow Copies settings on the new server.
B.    You should consider configuring the Snapshot settings on the new server.
C.    You should consider configuring the Background Copy settings on the new server.
D.    You should consider configuring the Permission settings on the new server.

Answer: A
Explanation:
What are previous versions?
Previous versions are either backup copies (copies of files and folders that you back up by using the Back Up Files wizard, or shadow copies) copies of files and folders that Windows automatically saves as part of a restore point. (Shadow copies can be copies of files on your computer or shared files on acomputer on a network.) You can use previous versions of files to restore files that you accidentally modified or deleted, or that were damaged. Depending on the type of file or folder, you can open, save to a different location, or restore a previous version.
ATT: ( nothing to do with question but cool to know ) File Server Volume Copy Shadow Service (VSS) Agent Service Enables consistency of application snaphots (shadow copies). With previous versions of Windows Server, VSS only supported shadow copies of data on the local server. With WS2012, Microsoft has added VSS for SMB File Shares which extends shadow copy support for network volumes.Administrators install the FS VSS Agent on the file server where the application data is located. They then install the VSS provider in the server where the application is located. The provider talks to the agent using the new File Server Remote VSS protocol in order to manage the shadow copies of the data.
http://windows.microsoft.com/en-gb/windows-vista/previous-versions-of-files-frequently-asked-questions

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QUESTION 81
Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2012 R2. The domain contains a server named Server1 that runs Windows Server 2012 R2.
You need to ensure that when users log on to Server1, their user account is added automatically to a local group named Group1 during the log on process.
Which Group Policy settings should you modify?

A.    Restricted Groups
B.    Security Options
C.    User Rights Assignment
D.    Preferences

Answer: D
Explanation:
A. If a Restricted Groups policy is defined and Group Policy is refreshed, any current member not on the Restricted Groups policy members list is removed
B. Security settings incorporated into policies are rules that administrators configure on a computer or multiple computers for the purpose of protecting resources on a computer
C. User Rights Assignment policies determines which users or groups have logon rights or privileges on the computer
D. With Preferences, local and domain accounts can be added to a local group without affecting the existing members of the group
http://technet.microsoft.com/en-us/library/cc785631(v=ws.10).aspx http://www.grouppolicy.biz/2010/01/how-to-use-group-policy-preferences-to-secure-localadministrator-groups/
http://technet.microsoft.com/en-us/library/cc780182(v=ws.10).aspx http://technet.microsoft.com/en-us/library/hh831424.aspx

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