642-691 Exam Dumps
Author: jessica
Author: jessica
642-691 Technology
Understand and explain Core MPLS technology and concepts
Understand and explain MPLS VPN technology and concepts
Understand and explain basic BGP concepts and operations
Understand and explain how to Scale IGP and BGP in Service Provider Networks
642-691 Exam Recommended Training
Configuring BGP on Cisco Routers (BGP) and Implementing Cisco MPLS (MPLS) are the recommended training for this exam. Courses listed are offered by Cisco Learning Partnersthe only authorized source for Cisco IT training delivered exclusively by Certified Cisco Instructors. Check the Global Learning Partner Locator for a Cisco Learning Partner near you.
642-691 practice examA variety of Cisco Press titles may be available for this exam. These titles can be purchased through the Cisco Marketplace Bookstore, directly from Cisco Press. The BGP+MPLS exam is the quickest way for currently certified CCIP (Cisco Certified Internetwork Professionals) to obtain recertification. 642-691 exam dumps skills and knowledge pertaining to the Configuring BGP on Cisco Routers (BGP) and Implementing Cisco MPLS (MPLS) courses.It may also be taken in place of the BGP and MPLS exams required for the CCIP certification. 1. Refer to the diagram. What problem can be caused by the second P router summarizing the loopback address of the egress PE router?
A. The first P router will be faced with a VPN label which it does not understand.
B. The second P router will be faced with a VPN label which it does not understand.
C. The egress PE router will not be able to establish a label switch path (LSP) to the ingress PE router.
D. A label switch path (LSP) will be established from the ingress PE router to the egress PE router, an event that is not desirable.
E. The ingress PE router will not be able to receive the VPN label from the egress PE router via MP-IBGP.
Answer: B 2. Which two of the following statements regarding LDP are true? (Choose two.)
A. LDP can also be used between nonadjacent routers using multicast LDP hello messages.
B. LDP does not require periodic hello messages once the LDP session has been established between the LDP peers.
C. LDP hello messages use TCP packets with a destination port number of 646.
D. Multiple sessions can be established between a pair of LSRs if they use multiple label spaces.
E. Per-platform label space can be identified by a label space ID of 0 in the LDP identifier field.
Answer: DE 3. In a central services topology, which routes do client VRFs contain?
A. routes from the client site, but not from the server site
B. routes from the server site, but not from the client site
C. routes from both the client site and the server site
D. only EBGP routes from either the client site or the server site
Answer: C 4. What are three drawbacks of a peer-to-peer VPN using a shared provider edge (PE) router? (Choose three.)
A. A full mesh of virtual circuits is required between the customer sites.
B. All the customers have to share a common IP address space.
C. Optimal routing between customer sites cannot be guaranteed.
D. The shared PE router has to know all routes for all customers.
E. Packet filters are required on the PE routers.
Answer: BDE 5. On a dedicated subinterface implementation, PE-2 must establish an address-family vrf IPv4 BGP neighbor relationship with which router?
A. CE-1
B. CE-2
C. PE-1
D. PE-IG
E. CE-1 and CE-2
F. PE-1 and PE-IG
Answer: BAbout the Author:
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