NO.1 On Cisco routers, which three methods can be used to map traffic into the MPLS traffic
engineering tunnel? (Choose three.)
A. on-demand routing
B. static routing
C. optimized edge routing
D. policy-based routing
E. autoroute
Answer: B,D,E

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NO.2 With unmanaged CE routers, at which point in the service provider network is the QoS trust
boundary, and what is required at the trust boundary?
A. between the CE and PE router and mapping of the customer traffic classes into the service
provider traffic classes at the PE router ingress
B. between the CE and PE router and trusting the QoS markings from the CE router and applying the
required QoS mechanisms based on the customer QoS markings
C. between the PE and the P router and mapping of the customer traffic classes into the service
provider traffic classes at the P router ingress
D. between the PE and P router and trusting the QoS markings from the CE router and applying the
required QoS mechanisms based on the customer QoS markings
E. between the customer network and the CE router ingress and applying the required egress QoS
policy on the CE router
Answer: A

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NO.3 On Cisco routers, which QoS marker is only locally significant?
A. DSCP
B. MPLS EXP
C. IP precedence
D. QoS group
E. discard eligible (DE)
Answer: D

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NO.4 Which statement describes the QoS behavior between P and PE routers of an MPLS provider
network for an L3VPN service?
A. The PE function honors DSCP markings set by the CE.
B. The customer and provider must agree on DSCP classification and traffic priorities.
C. Classification of customer traffic is handled by the P router.
D. The PE function cannot map DSCP markings to MPLS EXP bits.
Answer: B

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NO.5 Referring to the traceroute output exhibit that is shown,
which statement is correct?
A. There is no problem with the end-to-end LSP as indicated by the successful trace.
B. Normal PHP operation is performed by the hop 4 router.
C. The end-to-end LSP is broken at hop 4.
D. At each hop, each LSR is able to perform label swapping.
Answer: C

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NO.6 A network operations center requests support to configure a Cisco MPLS TE tunnel on a Cisco
IOS XR router. Which command sets a specific bandwidth required to the corresponding Cisco MPLS
TE tunnel?
A. rsvp interface interface-path-id bandwidth bandwidth
B. interface tunnel-te tunnel_id ! bandwidth bandwidth
C. interface tunnel-te tunnel_id ! signaled-bandwidth bandwidth
D. mpls traffic-eng auto-bw collect frequency value !
Answer: C

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NO.7 A network engineer must analyze RSVP-TE signaling on a syslog server. Which three RSVP
messages are valid? (Choose three.)
A. RSVP PATH
B. RSVP RESERVATION
C. RSVP ESTABLISHED
D. RSVP PATH TEAR
E. RSVP KILL
F. RSVP INIT
Answer: A,B,D

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NO.8 In which two Cisco IOS XR configuration modes can mpls ldp igp sync be configured? (Choose
two.)
A. config-ldp
B. config-if
C. config-ospf-ar
D. config-ospf
E. config-isis
Answer: C,D

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Exam Code: 642-887
Exam Name: Implementing Cisco Service Provider Next-Generation Core Network Services
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642-887 Bootcamp Total Q&A: 130 Questions and Answers
Last Update: 06-24,2015

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