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Q491. When EIGRP is used as the IPv4 PE-CE protocol, which two requirements must be configured before the BGP IPv4 address family can be configured? (Choose two.)
A. the route distinguisher
B. the virtual routing and forwarding instance
C. the loopback interface
D. the router ID
Answer: A,B
Explanation:
A VRF must be created, and a route distinguisher and route target must be configured in order for the PE routers in the BGP network to carry EIGRP routes to the EIGRP CE site. The VRF must also be associated with an interface in order for the PE router to send routing updates to the CE router. Prerequisites Before this feature can be configured, MPLS and CEF must be configured in the BGP network, and multiprotocol BGP and EIGRP must be configured on all PE routers that provide VPN services to CE routers.
Reference:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/seipecec.html#wp1083316
Q492. Which packet does a router receive if it receives an OSPF type 4 packet?
A. hello packet
B. database descriptor packet
C. link state update packet
D. link state request packet
E. link state acknowledge packet
Answer: C
Q493. DRAG DROP
Drag and drop each description of IPv6 transition technology on the left to the matching IPv6 transition technology category on the right.
Answer:
Q494. Which two statements about a network running MPLS VPN with IS-IS IGP are true? (Choose two.)
A. IS-IS traffic engineering uses wide metric TLV type 135 with an up/down bit to define a leaked route.
B. IS-IS traffic engineering uses wide metric TLV type 128 with an internal/external bit and an up/down bit to define a leaked route.
C. IS-IS traffic engineering uses wide metric TLV type 130 with an internal/external bit and an up/down bit to define a leaked route.
D. If the IS-IS up/down bit is set to 1, the leaked route originated in the L1 area.
E. The MPLS VPN IS-IS core is inherently protected against IP-based attacks.
Answer: A,E
Q495. Refer to the exhibit.
Which statement is true?
A. The output shows an IPv6 multicast address with link-local scope.
B. The output shows an IPv6 multicast address that is used for unique local sources only.
C. The output shows an IPv6 multicast address that can be used for BIDIR-PIM only.
D. The output shows an IPv6 multicast address with embedded RP.
Answer: D
Q496. Which two options are the two underlying protocols on which a DMVPN relies? (Choose two.)
A. IPsec
B. NHRP
C. GDOI
D. ISAKMP
E. SSL
F. NLRI
Answer: A,B
Q497. Which two options are EEM policies? (Choose two.)
A. applets
B. event detectors
C. scripts
D. syslogs
E. actions
Answer: A,C
Q498. Which BGP feature allows a router to maintain its current BGP configuration while it advertises a different AS number to new connections?
A. local-AS
B. next-hop-self
C. allow-AS in
D. soft reset
Answer: A
Explanation:
The local-AS feature allows a router to appear to be a member of a second autonomous system (AS), in addition to its real AS. This feature can only be used for true eBGP peers. The local-AS feature is useful if ISP-A purchases ISP-B, but ISP-B's customers do not want to modify any peering arrangements or configurations. The local-AS feature allows routers in ISP-B to become members of ISP-A's AS. At the same time, these routers appear to their customers to retain their ISP-B AS number.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13761-39.html
Q499. What is the destination MAC address of a BPDU frame?
A. 01-80-C2-00-00-00
B. 01-00-5E-00-00-00
C. FF-FF-FF-FF-FF-FF
D. 01-80-C6-00-00-01
Answer: A
Explanation:
The root-bridge election process begins by having every switch in the domain believe it is the root and claiming it throughout the network by means of Bridge Protocol Data Units (BPDU). BPDUs are Layer 2 frames multicast to a well-known MAC address in case of IEEE STP (01-80-C2-00-00-00) or vendor-assigned addresses, in other cases.
Reference: http://www.ciscopress.com/articles/article.asp?p=1016582