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ISCW – Implementing Secure Converged Wide Area Networks : 642-825 Exam
Exam Number/Code: 642-825
Exam Name:ISCW – Implementing Secure Converged Wide Area Networks

“ISCW – Implementing Secure Converged Wide Area Networks”, also known as 642-825 exam, is a Cisco certification. With the complete collection of questions and answers Q&as with Expert Explanations, Pass4sure has assembled to take you through 310 Q&As to your 642-825 Exam preparation. In the 642-825 exam resources, you will cover every field and category in CCNP helping to ready you for your successful Cisco Certification.
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VCE PDF EPAD bootcamp training bible DetailsThe Implementing Secure Converged Wide Area Networks (ISCW 642-825) is a qualifying exam for the Cisco Certified Network Professional CCNP®. The ISCW 642-825 exam will certify that the successful candidate has important knowledge and skills necessary to secure and expand the reach of an enterprise network to teleworkers and remote sites with focus on securing remote access and VPN client configuration. The exam covers topics on Cisco hierarchical network model as it pertains to the WAN, teleworker configuration and access, frame mode MPLS, site-to-site IPSEC VPN, Cisco EZVPN, strategies used to mitigate network attacks, Cisco device hardening and IOS firewall features.

QUESTION 21:
Part of the configuration of a PassGuide router is shown below:
Based on the information above, what is needed to complete the PPPoA
configuration on this PassGuide router?
A. The ATM PVC needs to be configured.
B. The VPDN group needs to be created.
C. PPPoE encapsulation needs to be configured on the ATM interface.
D. PAP authentication needs to be configured.
642-825
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E. A static route to the ISP needs to be configured.
F. None of the above
Answer: A
Explanation:
When you configure PPPoA, a logical interface, known as a virtual access interface,
associates each PPP connection with an ATM virtual circuit (VC). You can create this
logical interface by configuring an ATM PVC or switched virtual circuit (SVC). This
configuration encapsulates each PPP connection in a separate PVC or SVC, allowing
each PPP connection to terminate at the router ATM interface as if received from a
typical PPP serial interface.
QUESTION 22:
A small PassGuide office needs to connect their Cisco router to the DSL service
provider. Which three configuration steps must be taken to connect a DSL ATM
interface to a service provider? (Select three)
A. Configure the ATM PVC.
B. Assign a VPDN group name.
C. Configure PPPoE on the VPDN group.
D. Enable VPDN.
E. Configure the correct PPP encapsulation on the ATM virtual circuit.
F. Configure a dialer interface.
Answer: A, E, F
Explanation:
Configuring DSL ATM interface to a Service Provider:
1. dsl operating-mode auto interface configuration command to specify that the router
642-825
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automatically detect the DSL modulation that the service provider is using and set the
DSL modulation to match. An incompatible DSL modulation configuration can result in
failure to establish a DSL connection to the DSLAM of the service provider.
Router(Config)# interface atm number
Router(Config0f)#dsl operating-mode auto
2. Thepvc interface configuration command to set the virtual path identifier/virtual
channel identifier (VPI/VCI) that is used by the DSL service provider, as shown in the
table. Settings for the VPI/VCI value on the Cisco router must match the configuration on
the DSLAM of the service provider switch configuration. ATM uses the VPI/VCI to
identify an ATM VC.
Router(Config-if)#pvc vpi/vci
3. Define the Encapsulation:
Router(Config-atm-vc)# encapsulation aal5mux ppp dialer
4. Associate the interface with the pool
Router#(config-atm-vc)#dialer pool-member number
QUESTION 23:
Router CK1 is configured as shown below:
interface ATM0/0
no ip address
pvc 8/35
encapsulation aaa15mux ppp dialer
dialer pool-member 1
!
interface dialer 0
ip address negotiated
encapsulation ppp
dialer pool 1
no cdp enable
ppp chap hostname PassGuide
ppp chap password PassGuide
Given the above configuration, which statement is true?
A. This device is configured as a PPPoE client.
B. This device is configured as a PPPoA client.
C. This device is configured as RFC 1483/2684 bridge.
D. This device is configured an an aggregation router.
Answer: B
Explanation:
This following is an example of configuring a Cisco router as a PPPoA client. The
command “encapsulation aal5muxppp dialer” placed under the ATM interface is the
indication that it is using PPPoA.
642-825
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Cisco ADSL WIC
!version 12.1service timestamps debug datetime msecservice timestamps datetime
msec!hostname R1!ip subnet-zero!ip dhcp excluded-address 10.0.0.1!— the DHCP pool
does not lease this address;!— it is used by interface FastEthernet0!ip dhcp pool
poolnamenetwork 10.0.0.0 255.0.0.0 default-router 10.0.0.1!— default gateway is
assigned to local devices!interface FastEthernet0 ip address 10.0.0.1 255.0.0.0 no ip
directed-broadcast no ip mroute-cache!interface ATM0no ip addressno ip
directed-broadcastno ip mroute-cacheno atm ilmi-keepalive pvc 1/150encapsulation
aal5mux ppp dialerdialer pool-member 1! hold-queue 224 in!interface Dialer0ip
address 172.18.0.1 255.255.0.0ip nat outsideno ip directed-broadcastencapsulation
pppdialer pool 1dialer-group 2ppp pap sent-username username password password!ip
nat inside source list 1 interface Dialer0 overloadip classlessip route 0.0.0.0 0.0.0.0
Dialer0no ip http server!access-list 1 permit 10.0.0.0 0.255.255.255dialer-list 2 protocol
ip permit!end
Reference:
http://www.cisco.com/en/US/tech/ CK1 75/ CK1
5/technologies_configuration_example09186a0080093e60.shtml
QUESTION 24:
The configuration of the 827 ADSL router depends on tbe encapsulation method
used for the ADSL connection. What are the three common encapsulation methods?
(Choose three)
A. PPPoE
B. PPPoA
C. HDLC over ATM
D. DOCSIS
E. RFC 1483 Bridged
F. IP over ATM
Answer: A, B, E
Explanation:
Before you can successfully configure your Cisco DSL Router with Asymmetric Digital
Subscriber Line (ADSL) service, you need specific information from your Internet
Service Provider (ISP). If your ISP is unsure, unable, or unwilling to provide answers to
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the questions outlined below, you may not be able to correctly configure your Cisco DSL
Router.
The most fundamental piece of information you will need is the type of DSL service. The
following lists the type of DSL services that are available and can be configured on the
Cisco 827 ADSL router:
1. Point-to-Point Protocol over Ethernet (PPPoE)
2. Point-to-Point Protocol over ATM (PPPoA)
3. RFC1483 Bridging
4. RFC1483 Routing
QUESTION 25:
Which two encapsulation methods require that an 827 ADSL router be configured
with a PPP username and CHAP password? (Choose two)
A. PPPoE with the 827 configured as a bridge.
B. PPPoE with the 827 configured as the PPPoE client.
C. PPPoA
D. RFC 1483 Bridged with the 827 configured as the PPPoE client.
E. RFC 1482 Bridged with the 827 configured as a bridge.
Answer: B, C
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