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Microsoft (MCSE, MCSD, MOUS, MCAD) > 70-216 > NetChild's Mon 70-216 QOD

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Author NetChild's Mon 70-216 QOD
NetChild1985
RedHater




Registered: Feb 2002
Location:
Country: Bulgaria
State:
Certifications: MCSA 2K;2K3, MCSE 2K, HP AIS & ASE
Working on: MCSE 2K3:Security

Total Posts: 2517
NetChild's Mon 70-216 QOD

I'm continuing wbafrank and Pavlov's QOD as long as I'm preparing for this exam. Here's the first question for this week...

You are the administrator of your company's network. Your network consists of Windows 2000 server computer and Windows 2000 Professional computers. You create an IPSec policy named accountingsec for use by employees in your accounting department.
Your company is concerned that the keys used for encryption could be compromised and used to decrypt future communications. You want to prevent the re-use of previous-session keys. You also want to limit performance degradation. What should you do?

A. Decrease the frequency of policy checks for updates

B. On the Generate a new key every property, modify the time allocations

C. Select the Master key perfect forward secrecy check box

D. Select the Session key perfect forward secrecy check box


Good luck! We'll see you tomorrow with the correct answer!

__________________
Using a digital nervous system

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Old Post 03-24-03 07:34 AM
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gcw123
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M




Registered: Oct 2001
Location:
Country: Singapore
State:
Certifications: CCNA, CNE NW4/NW5/NW6, CNA NW4/NW5/NW6, MCP(210,215)
Working on: MCSE 2K, CCNP,

Total Posts: 347

C

Refer to : http://www.microsoft.com/windows200...ey_exchange.htm

http://www.brienposey.com/kb/new_page_5.asp

http://www.serverwatch.com/tutorial...10825_1473911_2

http://tennis.ecs.umass.edu/~czou/l.../lecture11a.ppt

Last edited by gcw123 on 03-24-03 at 09:33 AM

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Old Post 03-24-03 08:44 AM
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NetChild1985
RedHater




Registered: Feb 2002
Location:
Country: Bulgaria
State:
Certifications: MCSA 2K;2K3, MCSE 2K, HP AIS & ASE
Working on: MCSE 2K3:Security

Total Posts: 2517

That's a tricky question...

__________________
Using a digital nervous system

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cramersaunders
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Registered: Oct 2001
Location: Herford
Country: Germany
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Certifications: MCSE, MCSA, A+
Working on: MCDBA

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Old Post 03-24-03 11:03 AM
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NetChild1985
RedHater




Registered: Feb 2002
Location:
Country: Bulgaria
State:
Certifications: MCSA 2K;2K3, MCSE 2K, HP AIS & ASE
Working on: MCSE 2K3:Security

Total Posts: 2517
Re: NetChild's Mon 70-216 QOD

quote:
Originally posted by NetChild1985
I'm continuing wbafrank and Pavlov's QOD as long as I'm preparing for this exam. Here's the first question for this week...

You are the administrator of your company's network. Your network consists of Windows 2000 server computer and Windows 2000 Professional computers. You create an IPSec policy named accountingsec for use by employees in your accounting department.
Your company is concerned that the keys used for encryption could be compromised and used to decrypt future communications. You want to prevent the re-use of previous-session keys. You also want to limit performance degradation. What should you do?

A. Decrease the frequency of policy checks for updates

B. On the Generate a new key every property, modify the time allocations

C. Select the Master key perfect forward secrecy check box

D. Select the Session key perfect forward secrecy check box


Good luck! We'll see you tomorrow with the correct answer!



As I said the questions is tricky and the correct answer is: D

There are two types of keys that can be configured with Perfect Forward Secrecy, the Master and Sessions keys. Forcing Perfect Forward Secrecy for the Master key is the most secure option, however it can place an additional load on the networks domain controllers 'cause it requires re-authentication. Sessions keys are generated from the Master key. Although regeneration of these is not as secure, it is still highly secure and it meets the question's requirements for both security and limiting performance reductions.

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