Actualtests 642-691
642-691 : BGP + MPLS Exam (BGP + MPLS) Last Updated Friday, September 19, 2008 with 521 Questions
CCIP BGP + MPLS Exam (BGP + MPLS)
Exam Number: 642-691 Exam
Associated Certifications: CCIP BGP + MPLS Exam (BGP + MPLS)
Duration: 96 Q&As
Available Language(s): English
Exam Details
The BGP+MPLS exam is the quickest way for currently certified CCIP (Cisco Certified Internetwork Professionals) to obtain recertification. The exam tests skills and knowledge pertaining to the Configuring BGP on Cisco Routers (BGP) and Implementing Cisco MPLS (MPLS) courses. BGP+MPLS may be taken to recertify your CCIP certification. It may also be taken in place of the BGP and MPLS exams required for the CCIP certification.
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642-691 Exam: Actualtests’s CCIP BGP + MPLS Exam (BGP + MPLS) PDF
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QUESTION 1:
Every time a flap occurs on a route, the route receives_____
A. 750 per-flap penalty points which are user configurable
B. 1500 per-flap penalty points which are user configurable
C. 200 per-flap penalty points which are user configurable
D. 1000 per-flap penalty points which are not user configurable
E. 2000 per-flap penalty points which are not user configurable
Answer: D
Explanation: Everytime a flap occurs a penalty of 1000 is made and is not
configurable. See sections on route dampening in Internet routing architectures
guide.
QUESTION 2:
Which component of MPLS architecture uses protocols such as the label
distribution (LDP) and tag distribution protocol (TDP) to exchange labels?
A. Control pane
B. Data plane
C. Routing plane
D. Forwarding plane
Answer: A
QUESTION 3:
Exhibit:
Which statement is true about packet forwarding across an MPLS VPN backbone?
A. Penultimate hop popping (PHP) on the LDP label is performed by the egress PE
router.
B. Penultimate hop popping (PHP) on the VPN label is performed by the second P router.
C. Penultimate hop popping (PHP) on the VPN label is performed by the egress PE
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router.
D. Penultimate hop popping (PHP) on the LDP label is performed by the second P router.
Answer: D
QUESTION 4:
What is a good definition of Cisco’s implementation of an ATM Virtual Path as
related to LC-ATM MPLS support?
A. Designed to establish switch-to-switch connectivity between parts of a public ATM
network over a private network.
B. Designed to establish switch-to-switch connectivity between parts of a private ATM
network over a public network.
C. Designed to establish router-to-router connectivity between parts of a public ATM
network over a public network.
D. Designed to establish router-to-router connectivity between parts of a public ATM
network over a private network.
Answer: B
QUESTION 5:
What are two drawbacks when the Internet is accessed through a dedicated
subinterface implementation? (Select two.)
A. The VRP will leak routes into the global routing table.
B. The P router must run both IGP and BGP.
C. The PE routers must perform Internet routing
D. A limited set of Internet services will be implemented.
E. A separate physical link or specific WAN encapsulation is required.
Answer: C, E
QUESTION 6:
Which three statements are correct regarding Layer 2 overlay VPNs and
peer-to-peer VPNs? (Choose three.)
A. Peer-to-peer VPNs require the establishment of virtual circuits to connect the different
customer sites together.
B. Peer-to-peer VPNs require the service provider to participate in the customer routing,
accepting customer routes, transporting them across the service provider backbone, and
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finally propagating them to other customer sites.
C. With peer-to-peer VPNs, the service provider is responsible for transport of Layer 2
frames between customer sites, and the customer takes responsibility for all higher layers.
D. The implementation of Layer 2 overlay VPNs is the traditional switch-WAN model,
implemented with technologies like X.25, Frame Relay or ATM.
E. With Layer 2 overlay VPNs, the service provider is not aware of customer routing has
no information about customer routers.
F. It is simple to implement Layer 2 overlay VPNs because the Customer Edge (CE)
router just needs a connection to the Service Provider’s Edge (PE) router.
Answer: B, D, E
QUESTION 7:
Exhibit:
What will the BGP configuration accomplish? (Choose two.)
A. Prefix 10.0.0.0/8 announced to neighbor 10.1.1.1. will have a MED of 100.
B. Prefix 10.0.0.0/8 announced to neighbor 10.1.1.1. will have a MED of 200.
C. All prefixes except the 10.0.0.0/8 prefix will not be announced to neighbor 10.1.1.1.
D. All prefixes except the 10.0.0.0/8 prefix announced to neighbor 10.1.1 will have a
MED of 0.
E. All prefixes except the 10.0.0.0/8 prefix announced to neighbor 10.1.1 will have a
MED of 200.
Answer: A, E
QUESTION 8:
Exhibit:
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What is wrong with the BGP configuration in the exhibit?
A. The auto-summary configuration is missing.
B. The network 10.0.0.0 statement is missing mask 0.255.255.255.
C. The network 10.0.0.0 statement is missing mask 255.0.0.0
D. The network 192.168.0.0 statement is missing mask 255.255.0.0.
E. The network 192.168.0.0 statement is missing mask 0.0.255.255
Answer: D
QUESTION 9:
Why does a modern transit AS not need to have BGP synchronization enabled?
A. A modern transit AS does not rely on redistribution of BGP routes into an IGP.
B. A modern transit AS does not rely on redistribution of IGP routes into an IGP.
C. A modern transit AS rely on redistribution of BGP routes into an IGP.
D. A modern transit AS rely on redistribution of IGP routes into an IGP.
E. A modern transit AS uses peer group to reduce the BGP configuration complexity.
F. Modern transit AS internal (core) routers do not run BGP. Internal (core) routers
normally use a default route to reach all external networks.
Answer: A
QUESTION 10:
Which of the following are standard filtering-oriented BGP communities? (Choose
four.)
A. No-export
B. No-advertise
C. Remote-as
D. Local-as
E. No-reflect
F. Internet
Answer: A, B, D, F
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