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QUESTION 227
In the context of MPLS Traffic engineering, TE path calculation is conducted by:
A. TE middle point
B. TE tail end
C. Independent server
D. All TE nodes along the path
E. TE head end
Answer: E
QUESTION 228
Which QoS method is available when GRE is used to provide MPLS VPN services over an IP-only core?
A. matching MPLS EXP on the physical interface
B. matching EXP on the tunnel interface
C. matching DSCP on the physical interface
D. matching DSCP on the tunnel interface
Answer: C
QUESTION 229
Which statement about MPLS Traffic Engineering class-based tunnel selection (CBTS) is not true?
A. Local mechanism is at the middle-point router.
B. EXP selection is between multiple tunnels to the same destination
C. Bundle members are configured with EXP values to carry.
D. The tunnel selection is configured on the tunnel master.
E. The tunnel master bundles the tunnel members
Answer: A
QUESTION 230
Based on the following configuration:
vrf definition ABC
rd 10.0.0.1:1000
!
address-family ipv4
route-target export 1:1
route-target import 1:1
mdt default 232.0.0.1
Which two statements about multicast VPN configuration are true? (Choose two.)
A. The multicast tree is created based only on the existence of active sources or receivers behind PEs in the ABC VRF.
B. The service provider core network is required to support SSM.
C. Multicast needs to be enabled only on ABC VRF and is tunneled to participating PE routers in the ABC VRF.
D. The SP core network is required in order to enable the BGP Multicast Address Family on all peerings.
E. Multicast is required for the core network in addition to the ABC VRF.
F. The multicast tree exists regardless of whether there are any active sources or receivers in the ABC VRF.
Answer: EF
QUESTION 231
An engineer wants to configure MPLS TE Fast Reroute with link protection on five routers.
Which methodology can reduce configuration on the point of the local repair router and successfully complete the task?
A. Configure a backup tunnel on the PLR.
B. Enable the autotunnel backup feature.
C. Configure a backup tunnel on the tunnel headend router.
D. Enable the autotunnel primary feature.
Answer: B
Explanation:
http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/mpls/configuration/guide/b_mpls_cg42crs/b_mpls_cg42crs_chapter_0100.html#concept_F19BEEEFC831436AAC9291A87F9B34E5
QUESTION 232
A security risk has been discovered on the Service Provider MPLS core network during a network audit. Traceroute between the customer sites displays IP addresses of the Service Provider MPLS core. What should be done to hide the IP addresses of the Service Provider MPLS core from the customer traceroute utility?
A. Configure an access list to block traceroute traffic.
B. Apply the no mpls ip propagate-ttl forward command.
C. Enable MPLS LDP session protection.
D. Configure an LDP label allocation filter.
E. Apply the no mpls ip propagate-ttl local command.
Answer: B
QUESTION 233
In which three scenarios does multihoming in IS-IS work? (Choose three.)
A. merging Level 1 areas
B. splitting the Level 1 area
C. renumbering NSAP addresses
D. modifying the system ID
E. merging Level 2 areas
F. splitting the Level 2 area
G. creating an alternative path to the exit point
Answer: ABC
QUESTION 234
Which Inter-AS option allows a service provider to provision AToM along with L3VPN provisioning?
A. MPLS VPN Inter-AS with ASBRs exchanging VPN-IPv4 addresses
B. MPLS VPN Inter-AS with ASBRs exchanging IPv4 routes and MPLS labels
C. MPLS VPN Inter-AS Option AB
D. back-to-back VRFs
Answer: B
QUESTION 235
What is the requirement of Remote Triggered Black Hole (RTBH) filtering?
A. ISIS updates exchange between trigger router and black hole router
B. EBGP updates exchange between trigger router and black hole router
C. None of above
D. OSPF updates exchange between trigger router and black hole router
E. IBGP updates exchange between trigger router and black hole router
Answer: E
QUESTION 236
Which three statements about the BGP next-hop attribute are true? (Choose three.)
A. EBGP sessions between confederation sub ASs do not modify the next-hop attribute.
B. By default, iBGP sessions change the next-hop attribute learned from eBGP peers to self address.
C. By default, the next-hop attribute is not changed when a prefix is reflected by the route reflector
D. EBGP sessions between confederation sub ASs change the next-hop attribute to peer address.
E. By default, iBGP sessions preserve the next-hop attribute learned from eBGP peers.
Answer: ACE
QUESTION 237
Which BGP community is used to prevent the advertisement of the BGP prefix to other BGP peers?
A. no-advertise
B. additive
C. no-export
D. local-as
E. none
Answer: A
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