pass4side Cisco CCNP iscw Exam 642-825 v4.13
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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
VUE Code: 642-825
Questions Type: Single choice,
“ISCW – Implementing Secure Converged Wide Area Networks”, also known as 642-825 exam, is a Cisco certification.
Preparing for the 642-825 exam? Searching 642-825 Test Questions, 642-825 Practice Exam, 642-825 Dumps?With the complete collection of questions and answers, Pass4sure has assembled to take you through 172 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.
QUESTION 45:
Certkiller is an MPLS network provider connecting multiple customer networks. In
an MPLS VPN implementation, how are overlapping customer prefixes
propagated?
A. A route target is attached to each customer prefix.
B. Because customers have their own interfaces, distributed CEFs keep the forwarding
tables separate.
C. Separate BGP sessions are established between each customer edge LSR.
D. A separate instance of the core IGP is used for each customer.
E. Because customers have their own unique LSPs, address space is kept separate.
F. None of the above.
Answer: A
Explanation:
If there is no one-to-one mapping between VPN and VRF, how does the router know
which routes need to be inserted into which VRF? This dilemma is solved by the
introduction of another concept in the MPLS/VPN architecture: the route target. Every
VPN route is tagged with one or more route targets when it is exported from a VRF (to
be offered to other VRFs). You can also associate a set of route targets with a VRF, and
all routes tagged with at least one of those route targets will be inserted into the VRF.
NOTE: The route target is the closest approximation to a VPN identifier in the
MPLS/VPN architecture. In most VPN topologies, you can equate them, but in other
topologies (usually a central services topology), a single VPN might need more than one
route target for successful implementation.
The route target is a 64-bit quantity, the format of which is explained in the next chapter.
For simplicity reasons, we will use names for route targets in this chapter.
Reference: http://www.informit.com/articles/article.aspx?p=28259&seqNum=5&rl=1
QUESTION 46:
The Certkiller network administrator is trying to optimize the convergence time in
their MPLS network. Which statement is true about convergence in an MPLS
network?
A. MPLS convergence will take place at the same time as the routing protocol
convergence.
B. MPLS convergence will take place after the routing protocol convergence.
C. MPLS must be reconfigured after the routing protocol convergence.
D. MPLS convergence will take place before the routing protocol convergence.
E. None of the above
Questions and Answers : 172 Q&As
Updated: April 5th , 2008
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