Facebook to launch iPad app at iPhone 5 event next week (rumor)

Facebook will finally launch its iPad app at Apple’s iPhone 5 event next week, according to a new rumor.

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Rumor has it Facebook will finally launch its iPad app at Apple’s iPhone 5 launch event on October 4. Facebook will also reportedly release a revamped version of its iPhone app with design and speed improvements similar to the iPad app, according to two sources familiar with the situation cited by Mashable.

This new information follows just hours after we learned Facebook engineer Jeff Verkoeyen quit the company to take a job on Google’s mobile team, which he worked at for a few months in 2007. Verkoeyen said he made the move out of frustration over Facebook’s failure to release its iPad app, which he led development for and says has been feature-complete for five months.

A possible reason for the constant delays is Facebook’s strained relationship with Apple. Facebook did not allow Apple to use Facebook Connect in Ping because Cupertino didn’t give Palo Alto any warning about the feature, which would have cost a lot of bandwidth for Facebook. Facebook was also supposed to be integrated into iOS, but instead Apple went with Twitter in iOS 5.

The relationship between the two technology giants is starting to turn around, however, since they both share a mutual enemy: Google. Facebook doesn’t have a mobile platform and Apple doesn’t have a social network. If this really is true, the Facebook apps for iOS could be just the beginning of much bigger things to come.

The original Apple iPad was released 17 months ago: in April 2010. An iPad version of the Facebook app has been expected since pretty much day one. Facebook is the most popular app on almost every mobile platform, if not all of them. Since there’s no official version for Apple’s tablet, there are countless third-party Facebook iPad apps that are very popular, even though most of them suck.

Apple isn’t to blame here though – Facebook is. While Microsoft develops the Facebook app for Windows Phone, and Research In Motion develops the Facebook app for the BlackBerry OS, the social networking giant develops the dedicated Facebook app for iOS and Android.

In fact, RIM actually beat Facebook to the punch and released the first dedicated tablet app for the social network. If RIM can quickly release a decent Facebook app for its BlackBerry PlayBook, Facebook not doing the same for the Apple iPad is clearly not due to technical reasons.

Earlier this month, Facebook for iOS version 3.5 was released. In the new version, Facebook removed the unofficial iPad version that was discovered inside the app a few months ago.

This led to the latest rumor, which suggested we might finally see the official app at Facebook’s 2011 f8 developer conference. Unfortunately, it didn’t make the cut, again. Now, everyone is looking to next week as the next possible release date.

See also:

Facebook’s iPad app was done in May, developer defects to Google
Facebook acquires interactive iPad book maker Push Pop Press
Is Facebook finally ready to launch an iPad app?
Facebook confirms it now has 350 million mobile users
Rumor: Facebook Credits to work on Apple’s iTunes platform
Facebook’s minor role in the iPad 2

640-816 Exam

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QUESTION 1

Which three options can a network administrator utilize by using PPP Layer 2 encapsulation?

(Choose three.)


A. authentication

B. VLAN support

C. compression

D. multilink support


Answer: A,C,D

---

QUESTION 2

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The

routers cannot establish an adjacency relationship on their common Ethernet link. The graphic

shows the output of the show ip ospf interface e0 command for routers R1 and R2. Based on the

information in the graphic, what is the cause of this problem?





A. The hello and dead timers are not configured properly.

B. The OSPF process ID numbers must match.

C. A backup designated router needs to be added to the network

D. The cost on R1 should be set higher.


Answer: A


Explanation:

As can be seen above, the hello interval for R1 has been set to 5 seconds, while it is set to 10 for

R2. Also, the dead interval on R1 is set at 20 seconds while on router CKD2 it is set to 40 seconds.

In order for two routers to establish an OSPF neigh adjacency, the hello and dead timers must

match.

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---

QUESTION 3

Refer to the exhibit. How should the FastEthernet0/1 ports on the 2950 model switches that are

shown in the exhibit be configured to allow connectivity between all devices?





A. The ports only need to be connected by a crossover cable.

B. SwitchX (config)# interface fastethernet 0/1

SwitchX (config-if)# switchport mode access

SwitchX (config-if)# switchport access vlan 1

C. SwitchX (config)# interface fastethernet 0/1

SwitchX (config-if)# switchport mode trunk

SwitchX (config-if)# switchport trunk vlan 1

SwitchX (config-if)# switchport trunk vlan 10

SwitchX (config-if)# switchport trunk vlan 20

D. SwitchX(config)# interface fastethernet 0/1

SwitchX(config-if)# switchport mode trunk


Answer: D

---

QUESTION 4

Refer to the exhibit. The following commands are executed on interface fa0/1 of 2950Switch.

2950Switch(config-if)# switchport port-security

2950Switch(config-if)# switchport port-security mac-address sticky

2950Switch(config-if)# switchport port-security maximum 1

The Ethernet frame that is shown arrives on interface fa0/1. What two functions will occur when

this frame is received by 2950Switch? (Choose two.)





A. The MAC address table will now have an additional entry of fa0/1 FFFF.FFFF.FFFF.

B. This frame will be discarded when it is received by2950Switch.

C. Only host A will be allowed to transmit frames on fa0/1.

D. All frames arriving on2950Switch with a destination of 0000.00aa.aaaa will be forwarded out

fa0/1.


Answer: C,D


Explanation:

The configuration shown here is an example of port security, specifically port security using sticky

addresses. You can use port security with dynamically learned and static MAC addresses to

restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into

the port. When you assign secure MAC addresses to a secure port, the port does not forward

ingress traffic that has source addresses outside the group of defined addresses. If you limit the

number of secure MAC addresses to one and assign a single secure MAC address, the device

attached to that port has the full bandwidth of the port.

Port security with sticky MAC addresses provides many of the same benefits as port security with

static MAC addresses, but sticky MAC addresses can be learned dynamically. Port security with

sticky MAC addresses retains dynamically learned MAC addresses during a link-down condition.

If you enter a write memory or copy running- config startup- config command, then port security

with sticky MAC addresses saves dynamically learned MAC addresses in the startup- config file

and the port does not have to learn addresses from ingress traffic after bootup or a restart.

Since the maximum number of MAC addresses has been configured to 1, only host A will be able

to send frames on interface fa 0/1, making choice C correct.

---

QUESTION 5

A university has a small campus in which 25 faculty members are located. The faculty offices and

student computers are currently on the same network. The faculty are concerned about students

being able to capture packets going across the network and obtain sensitive material. In order to

protect faculty network traffic from student connections ,which action will you take?


A. Remove the student computers from the network and put them on a peer-to-peer network.

B. Put the faculty computers in a separate VLAN.

C. Power down the switches that connect to faculty computers when they are not in use.

D. Install anti-virus software on the student computers.


Answer: B

---

QUESTION 6

Running both IPv4 and IPv6 on a router simultaneously is known as dual-stack routing.


A. False

B. True


Answer: B

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QUESTION 7

You are a network administrator. You configure a workgroup switch with all ports assigned to

VLAN 2. And you configure all ports as full-duplex FastEthernet. What is the effect of adding

switch ports to a new VLAN on this switch?


A. The additions will create more collisions domains.

B. IP address utilization will be more efficient.

C. The possibility that switching loops will occur will increase dramatically.

D. An additional broadcast domain will be created.


Answer: D


Explanation:

A VLAN is a group of hosts with a common set of requirements that communicate as if they were

attached to the same wire, regardless of their physical location. A VLAN has the same attributes

as a physical LAN, but it allows for end stations to be grouped together even if they are not located

on the same LAN segment.

Networks that use the campus-wide or end-to-end VLANs logically segment a switched network

based on the functions of an organization, project teams, or applications rather than on a physical

or geographical basis. For example, all workstations and servers used by a particular workgroup

can be connected to the same VLAN, regardless of their physical network connections or

interaction with other workgroups. Network reconfiguration can be done through software instead

of physically relocating devices.

Cisco recommends the use of local or geographic VLANs that segment the network based on IP

subnets. Each wiring closet switch is on its own VLAN or subnet and traffic between each switch is

routed by the router. The reasons for the Distribution Layer 3 switch and examples of a larger

network using both the campus-wide and local VLAN models will be discussed later.

A VLAN can be thought of as a broadcast domain that exists within a defined set of switches.

Ports on a switch can be grouped into VLANs in order to limit unicast , multicast, and broadcast

traffic flooding. Flooded traffic originating from a particular VLAN is only flooded out ports

belonging to that VLAN, including trunk ports, so a switch that connects to another switch will

normally introduce an additional broadcast domain.

---

QUESTION 8

Which technology helps prevent frames from looping continuously through this switched network?





A. EIGRP

B. VTP

C. STP

D. ARP


Answer: C

---

QUESTION 9

What ports on Sw-AC3 are operating as trunks?(Choose three)




Sw-AC3#show int trunk





A. Fa0/1

B. Fa0/9

C. Fa0/12

D. Fa0/3


Answer: B,C,D

---

QUESTION 10

You are a network administrator. You want to add a line to an access list that will block only Telnet

access by the hosts on subnet 192.168.1.128/28 to the server at 192.168.1.5. To accomplish this

task, what command should be used?


A. access-list 101 denyip 192.168.1.128 0.0.0.15 192.168.1.5 0.0.0.0 eq 23

access-list 101 permit ip any any

B. access-list 1 denytcp 192.168.1.128 0.0.0.15 host 192.168.1.5 eq 23

access-list 1 permit ip any any

C. access-list 1 denytcp 192.168.1.128 0.0.0.255 192.168.1.5 0.0.0.0 eq 21

access-list 1 permit ip any any

D. access-list 101 denytcp 192.168.1.128 0.0.0.15 192.168.1.5 0.0.0.0 eq 23

access-list 101 permit ip any any


Answer: D


Explanation:

Only choice specifies the correct TCT port and wildcard mask, and uses a valid access list
number.



Incorrect Answers:

A: IP is specified as the protocol, when it should be TCP.

B: Access list 1 is used for these choices, which is a standard access list. In this example, an

extended access list is required. Choice C also specifies port 21, which is used by FTP not Telnet.

C: Access list 1 is used for these choices, which is a standard access list. In this example, an

extended access list is required. Choice C also specifies port 21, which is used by FTP not Telnet.

---

QUESTION 11

Refer to the exhibit. What will be the result of issuing the following commands?

Switch1(config)# interface fastethernet 0/5

Switch1(config-if)# switchport mode access

Switch1(config-if)# switchport access vlan 30





A. The VLAN will not be added to the database, but the VLAN 30 information will be passed on as

a VLAN to theSwitch2 VLAN database.

B. The VLAN will not be added to the database, nor will the VLAN 30 information be passed on as

a VLAN to theSwitch2 VLAN database.

C. The VLAN will be added to the database and VLAN 30 will be passed on as a VLAN to add to

theSwitch2 VLAN database.

D. The VLAN will be added to the database, but the VLAN information will not be passed on to

theSwitch2 VLAN database.


Answer: D


Explanation:

The three VTP modes are described below:

Server: This is the default for all Catalyst switches. You need at least one server in your VTP

domain to propagate VLAN information throughout the domain. The switch must be in server

mode to be able to create, add, or delete VLANs in a VTP domain. You must also change VTP

information in server mode, and any change you make to a switch in server mode will be

advertised to the entire VTP domain.

Client: In client mode, switches receive information from VTP servers; they also send and receive

updates, but they can't make any changes. Plus, none of the ports on a client switch can be added

to a new VLAN before the VTP server notifies the client switch of the new VLAN. Here's a hint: if

you want a switch to become a server, first make it a client so that it receives all the correct VLAN

information, then change it to a server-much easier!

Transparent: Switches in transparent mode don't participate in the VTP domain, but they'll still

forward VTP advertisements through any configured trunk links. These switches can't add and

delete VLANs because they keep their own database-one they do not share with other switches.

Transparent mode is really only considered locally significant.

In our example, the switch is configured for transparent mode. In transparent mode the local

VLAN information can be created but that VLAN information will not be advertised to the other

switch.

---

QUESTION 12

S0/0 on R1 is configured as a multipoint interface to communicate with R2 and R3 in the hub-andspoke

Frame Relay topology shown in the exhibit. Originally, static routes were configured

between these routers to successfully route traffic between the attached networks. What will need

to be done in order to use RIP v2 in place of the static routes?







A. Change the 172.16.2.0/25 and 172.16.2.128/25subnetworks so that at least two bits are

borrowed from the last octet.

B. Configure the noip subnet-zero command on R1, R2, and R3.

C. Configure the s0/0 interface on R1 as two sub interfaces and configure point-to-point links toR2
and R3.

D. Dynamic routing protocols such as RIP v2 cannot be used across Frame Relay networks.


Answer: C

---

QUESTION 13

An access list has been designed to prevent HTTP traffic from the Accounting Department from

reaching the HR server attached to the Holyoke router. Which of the following access lists will

accomplish this task when grouped with the e0 interface on the Chicopee router?

A. denytcp 172.16.16.0 0.0.0.255 172.17.17.252 0.0.0.0 eq 80 permit ip any any

B. permitip any any deny tcp 172.16.16.0 0.0.0.255 172.17.17.252 0.0.0.0 eq 80

C. permitip any any deny tcp 172.17.17.252 0.0.0.0 172.16.16.0 0.0.0.255 eq 80

D. denytcp 172.17.17.252 0.0.0.0 172.16.16.0 0.0.0.255 eq 80 permit ip any any


Answer: A

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QUESTION 14

Which three benefits are of VLANs? (Choose three.)


A. They can enhance network security.

B. They allow logical grouping of users by function.

C. They simplify switch administration.

D. They increase the number of broadcast domains while decreasing the size of the broadcast

domains.


Answer: A,B,D


Explanation:

VLANs are used to segment a LAN into multiple, smaller LANs. This can be used to enhance

security as local traffic from one VLAN will not be passed to users in other VLANS.

---

QUESTION 15

A network administrator would configure port security on a switch, why?


A. to prevent unauthorized Telnet from accessing to a switch port

B. to protect the IP and MAC address of the switch and associated ports

C. to prevent unauthorized hosts from accessing the LAN

D. to block unauthorized access to the switch management interfaces over common TCP ports


Answer: C


Explanation:

You can use the port security feature to restrict input to an interface by limiting and identifying

MAC addresses of the stations allowed to access the port. When you assign secure MAC

addresses to a secure port, the port does not forward packets with source addresses outside the

group of defined addresses. If you limit the number of secure MAC addresses to one and assign a

single secure MAC address, the workstation attached to that port is assured the full bandwidth of

the port.

If a port is configured as a secure port and the maximum number of secure MAC addresses is

reached, when the MAC address of a station attempting to access the port is different from any of

the identified secure MAC addresses, a security violation occurs. Also, if a station with a secure

MAC address configured or learned on one secure port attempts to access another secure port, a

violation is flagged.

Reference:

http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_guide_chapter09186a00800d6a38.html#86378

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70-640 Exam

QUESTION 1
You work as the network administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008.
Only one Active-Directory integrated zone has been configured in the ABC.com domain. ABC.com
has requested that you configure DNS zone to automatically remove DNS records that are
outdated.
What action should you consider?

A. You should consider running the netsh /Reset DNS command from the Command prompt.
B. You should consider enabling Scavenging in the DNS zone properties page.
C. You should consider reducing the TTL of the SOA record in the DNS zone properties page.
D. You should consider disabling updates in the DNS zone properties page.

Answer: B

Explanation: In the scenario you should enable scavenging through the zone properties because
scavenging removes the outdated DNS records from the DNS zone automatically. You should
additionally note that patience would be required when enabling scavenging as there are some
safety valves built into scavenging which takes long to pop.

Reference: http://www.gilham.org/Blog/Lists/Posts/Post.aspx?List=aab85845-88d2-4091-8088-
a6bbce0a4304&ID=211

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at Certkingdom.com

---

QUESTION 2
You work as the network administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008.
The ABC.com network has a server named ABC-SR15. You install the Active Directory
Lightweight Directory Services (AD LDS) on ABC-SR15.
Which of the following options can be used for the creation of new Organizational Units (OU’s) in
the application directory partition of the AD LDS?

A. You should run the net start command on ABC-SR15.
B. You should open the ADSI Edit Microsoft Management Console on ABC-SR15.
C. You should run the repadmin /dsaguid command on ABC-SR15.
D. You should open the Active Directory Users and Computers Console on ABC-SR15.

Answer: B

Explanation: You need to use the ADSI Edit snap-in to create new OUs in the AD LDS
application directory partition. You also need to add the snap-in in the Microsoft Management
Console (MMC).

---

QUESTION 3
You work as the network administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008.
The ABC.com network has two domain controllers ABC-DC01 and ABC-DC02. ABC-DC01 suffers
a catastrophic failure but it is causing problems because it was configured to have Schema Master
Operations role. You log on to the ABC.com domain as a domain administrator but your attempts
to transfer the Schema Master Operations role to ABC-DC02 are unsuccessful.
What action should you take to transfer the Schema Master Operations role to ABC-DC02?

A. Your best option would be to have the dcpromo /adv command executed on ABC-DC02.
B. Your best option would be to have the Schema Master role seized to ABC-DC02.
C. Your best option would be to have Schmmgmt.dll registered on ABC-DC02.
D. Your best option would be to add your user account to the Schema Administrators group.

Answer: B

Explanation: To ensure that ABC-DC02 holds the Schema Master role you need to seize the
Schema Master role on ABC-DC02. Seizing the schema master role is a drastic step that should
be considered only if the current operations master will never be available again. So to transfer the
schema master operations role, you have to seize it on ABC-DC02.
Reference: http://technet2.microsoft.com/windowsserver/en/library/d4301a14-dd18-4b3c-a3ccec9a773f7ffb1033.
mspx?mfr=true

---

QUESTION 4
You work as the network administrator at ABC.com. The ABC.com network has a single forest.
The forest functional level is set at Windows Server 2008.
The ABC.com network has a Microsoft SQL Server 2005 database server named ABC-DB04 that
hosts the Active Directory Rights Management Service (AD RMS).
You try to access the Active Directory Rights Management Services administration website but
received an error message stating:
“SQL Server does not exist or access is denied.”
How can you access the AD RMS administration website?

A. You need to restart the Internet Information Server (IIS) service and the MSSQLSVC service on
ABC-DB04.
B. You need to install the Active Directory Lightweight Directory Services (AD LDS) on ABC-DB04.
C. You need to reinstall the AD RMS instance on ABC-DB04.
D. You need to reinstall the SQL Server 2005 instance on ABC-DB04.
E. You need to run the DCPRO command on ABC-SR04

Answer: A

Explanation: You need to restart the internet information server (IIS) to correct the problem. The
starting of the MSSQULSVC service will allow you to access the database from AD RMS
administration website.

---

QUESTION 5
You work as an enterprise administrator at ABC.com. The ABC.com network has a domain named
ABC.com. The ABC.com network has a Windows Server 2008 computer named ABC-SR03 that
functions as an Enterprise Root certificate authority (CA).
A new ABC.com security policy requires that revoked certificate information should be available for
examination at all times.
What action should you take adhere to the new policy?

A. This can be accomplished by having a list of trusted certificate authorities published to the
ABC.com domain.
B. This can be accomplished by having the Online Certificate Status Protocol (OCSP) responder
implemented.
C. This can be accomplished by having the OCSP Response Signing certificate imported.
D. This can be accomplished by having the Startup Type of the Certificate Propagation service set
to Automatic.
E. This can be accomplished by having the computer account of ABC-SR03 added to the
PGCertificates group.

Answer: B

Explanation: You should use the network load balancing and publish an OCSP responder. This
will ensure that the revoked certificate information will be available at all times. You do not need to
download the entire CRL to check for revocation of a certificate; the OCSP is an online responder
that can receive a request to check for revocation of a certificate. This will also speed up certificate
revocation checking as well as reducing network bandwidth tremendously.

---

QUESTION 6
You work as the network administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008.
You are responsible for managing two servers ABC-SR01 and ABC-SR02. They are setup with
the following configuration.
ABC-SR01 running Enterprise Root certificate authority (CA)
ABC-SR02 running Online Responder role service
Which of the steps must you perform for configuring the Online Responder to be supported on
ABC-SR01?

A. You should enable the Dual Certificate List extension on ABC-SR01.
B. You should ensure that ABC-SR01 is a member of the CertPublishers group.
C. You should import the OCSP Response Signing certificate to ABC-SR01.
D. You should enable the Authority Information Access (AIA) extension on ABC-SR01.
E. You should run the CERTSRV command on ABC-SR01.

Answer: D

Explanation: In order to configure the online responder role service on ABC-SR01 you need to
configure the AIA extension. The authority information access extension will indicate how to
access CA information and services for the issuer of the certificate in which the extension appears.
Information and services may include on-line validation services and CA policy data. This
extension may be included in subject or CA certificates, and it MUST be non-critical

---

QUESTION 7
You work as the network administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008 and all client computers
run Windows Vista.
The ABC.com network has a client computer named ABC-WS640 that was last used six months
ago. During the course of the day you attempt to log on to ABC-WS640 but you are unable to
authenticate during the logon process.
What action should you consider in order to log on to ABC-WS640?

A. You should consider opening the command prompt on ABC-WS640 and running the netsh set
machine command.
B. You should consider opening the command prompt on ABC-WS640 and running the repadmin
command.
C. You should consider removing ABC-WS640 from the domain and then rejoining it.
D. You should consider deleting the computer account for ABC-WS640 in Active Directory Users
and Computers, and then recreate the computer account.

Answer: C

Explanation: In the scenario you should have the computer disjoined from the domain and
rejoined to the domain whilst having the computer account reset as well. You should additionally
note that the long inactivity caused the computer to stop responding to the authentication query
using the Active Directory records. You should note by disjoining and rejoining with the account
being reset would refresh the computer account passwords.

---

QUESTION 8
You work as an enterprise administrator at ABC.com. The ABC.com network has a forest with a
domain named ABC.com.
The ABC.com network has a Windows Server 2008 domain controller named ABC-DC01 that
hosts the Directory Services Recovery Mode (DSRM) role.
What would be the best option to take to have the DSRM password reset?

A. The best option is to open the Active Directory Security for Computers snap-in.
B. The best option is to run the ntdsutil command.
C. The best option is to run the Netsh command.
D. The best option is to open the Domain Controller security snap-in.

Answer: B

Explanation: You should use the ntdsutil utility to reset the DSRM password. You can use
Ntdsutil.exe to reset this password for the server on which you are working, or for another domain
controller in the domain. Type ntdsutil and at the ntdsutil command prompt, type set dsrm
password.
Reference: http://support.microsoft.com/kb/322672

---

QUESTION 9
You work as an enterprise administrator at ABC.com. The ABC.com network has a domain named
ABC.com. All servers on the ABC.com network run Windows Server 2008. ABC.com has two
offices Chicago and Dallas.
The network has the following setup.
Chicago Office – Domain Controller named ABC-DC01
Dallas Office – Read-Only Domain Controller named ABC-DC02
How can you make sure that Dallas Office users use only ABC-DC02 for authentication?

A. You should consider having ABC-DC02 configured as a bridehead server in the Dallas office.
B. You should consider installing and configuring the Password Replication Policy on ABC-DC02.
C. You should consider having ABC-DC01 configured as a bridehead server in the Chicago office.
D. You should consider installing and configuring the Password Replication Policy on ABC-DC01.
E. You should consider having the Global Catalog installed on ABC-DC01.

Answer: B

Explanation: You should use the Password Replication Policy on the RODC. This will allow the
users at the Dallas office to log on to the domain with RODC. RODCs don’t cache any user or
machine passwords.

---

QUESTION 10
You work as the network administrator at ABC.com. The ABC.com network has a domain named
intl.ABC.com. All servers on the ABC.com network run Windows Server 2008. The domain
controllers on the ABC.com domain are configured to function as DNS servers.
What action should you take to ensure that computers that are not part of the intl.ABC.com
domain are not able to dynamically register their DNS registration information in the intl.ABC.com zone?

A. You should consider removing the .(root) zone from the intl.ABC.com zone.
B. You should consider running the dnscmd /AgeAllRecords command.
C. You should consider configuring Secure Only dynamic updates.
D. You should consider configuring the intl.ABC.com zone as an Active Directory integrated zone.

Answer: C

Explanation: In order to ensure that only domain members are able to register their DNS records
dynamically you need to set the option Secure only for Dynamic updates. This will only allow the
domain members to register their DNS records dynamically.
Reference:
www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/cnet/cncf_imp_afpf.mspx

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