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NEW QUESTION: 1
A. Option D
B. Option B
C. Option C
D. Option A
Answer: A,D
NEW QUESTION: 2
Your network contains an Active Directory domain named contoso.com. All servers run Windows Server 2012. Client computers run either Windows 7 or Windows 8.
All of the computer accounts of the client computers reside in an organizational unit (OU) named Clients. A Group Policy object (GPO) named GP01 is linked to the Clients OU. All of the client computers use a DNS server named Server1.
You configure a server named Server2 as an ISATAP router. You add a host (A) record for ISATAP to the contoso.com DNS zone.
You need to ensure that the client computers locate the ISATAP router.
What should you do?
A. Configure the Network Options Group Policy preference of GPO1.
B. Run the Set-DnsServerGlobalQueryBlockList cmdlet on Server1.
C. Run the Add-DnsServerResourceRecord cmdlet on Server1.
D. Configure the DNS Client Group Policy setting of GPO1.
Answer: B
Explanation:
Windows Server 2008 introduced a new feature, called "Global Query Block list", which prevents some
arbitrary machine from registering the DNS name of WPAD.
This is a good security feature, as it prevents someone from just joining your network, and setting himself
up as a proxy.
The dynamic update feature of Domain Name System (DNS) makes it possible for DNS client computers to
register and dynamically update their resource records with a DNS server whenever a client changes its
network address or host name.
This reduces the need for manual administration of zone records. This convenience comes at a cost,
however, because any authorized client can register any unused host name, even a host name that
might have special significance for certain applications. This can allow a malicious user to take over a
special name and divert certain types of network traffic to that user's computer.
Two commonly deployed protocols are particularly vulnerable to this type of takeover: the Web Proxy
Automatic Discovery Protocol (WPAD) and the Intra-site Automatic Tunnel Addressing Protocol (ISATAP).
Even if a network does not deploy these protocols, clients that are configured to use them are vulnerable to
the takeover that DNS dynamic update enables.
Most commonly, ISATAP hosts construct their PRLs by using DNS to locate a host named isatap on the
local domain. For example, if the local domain is corp.contoso.com, an ISATAP-enabled host queries DNS
to obtain the IPv4 address of a host named isatap.corp.contoso.com.
In its default configuration, the Windows Server 2008 DNS Server service maintains a list of names that, in
effect, it ignores when it receives a query to resolve the name in any zone for which the server is
authoritative.
Consequently, a malicious user can spoof an ISATAP router in much the same way as a malicious user can
spoof a WPAD server: A malicious user can use dynamic update to register the user's own computer as a
counterfeit ISATAP router and then divert traffic between ISATAP-enabled computers on the network.
The initial contents of the block list depend on whether WPAD or ISATAP is already deployed when you add
the DNS server role to an existing Windows Server 2008 deployment or when you upgrade an earlier
version of Windows Server running the DNS Server service.
Add-DnsServerResourceRecord - The Add-DnsServerResourceRecord cmdlet adds a resource record
for a Domain Name System (DNS) zone on a DNS server.
You can add different types of resource records. Use different switches for different record types.
By using this cmdlet, you can change a value for a record, configure whether a record has a time stamp,
whether any authenticated user can update a record with the same owner name, and change lookup
timeout values, Windows Internet Name Service (WINS) cache settings, and replication settings.
Set-DnsServerGlobalQueryBlockList - The Set-DnsServerGlobalQueryBlockList cmdlet changes
settings of a global query block list on a Domain Name System (DNS) server.
This cmdlet replaces all names in the list of names that the DNS server does not resolve with the names
that you specify.
If you need the DNS server to resolve names such as ISATAP and WPAD, remove these names from the
list.
Web Proxy Automatic Discovery Protocol (WPAD) and Intra-site Automatic Tunnel Addressing Protocol
(ISATAP) are two commonly deployed protocols that are particularly vulnerable to hijacking.
http://technet.microsoft.com/en-us/library/jj649857(v=wps.620).aspx
http://technet.microsoft.com/en-us/library/cc794902%28v=ws.10%29.aspx
http://technet.microsoft.com/en-us/security/bulletin/ms09-008
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0093
Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008, when dynamic updates are enabled, does not restrict registration of the "wpad" hostname, which allows remote authenticated users to hijack the Web Proxy Auto-Discovery (WPAD) feature, and conduct man-in-themiddle attacks by spoofing a proxy server, via a Dynamic Update request for this hostname, aka "DNS Server Vulnerability in WPAD Registration Vulnerability," a related issue to CVE-2007-1692.
NEW QUESTION: 3
FM-200 has all the following properties except ___________.
Response:
A. It's nontoxic at levels used for fire suppression
B. It does not leave a film or coagulant after use
C. It's gaseous at room temperature
D. It may deplete the Earth's ozone layer
Answer: D
NEW QUESTION: 4
A security analyst, who is working in a Windows environment, has noticed a significant amount of IPv6 traffic originating from a client, even though IPv6 is not currently in use. The client is a stand-alone device, not connected to the AD that manages a series of SCADA devices used for manufacturing. Which of the following is the appropriate command to disable the client's IPv6 stack?
A. Option
B. Option
C. Option
D. Option
Answer: B
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