Q1. Refer to the exhibit.
A company has a requirement to provide communication among remote sites via multipoint GRE tunnels. This communication is not working yet. Which is the root cause of this issue?
A. The key that is used on the DMVPN tunnel between the spoke and hub ends does not match. This causes the tunnel to fail.
B. BGP IPv4 multicast address-family is missing between hub and spoke points.
C. The GRE tunnel is not sourced from a physical interface. The DMVPN traffic does not know where to forward packets.
D. The NHRP network ID does not match in the hub and spoke configuration causing NHRP negotiations to fail and the mGRE to stay down.
Answer: D
Q2. What are the four key design requirements for mobile IP backhaul? (Choose four.)
A. X2 interface turning point
B. bandwidth
C. Layer 2 Tunneling
D. native IPv6 support
E. DiffServQoS
F. MPLS-enabled interface
G. network timing distribution and recovery
H. mandatory Layer 3 access up to a cell site
Answer: C,D,G,H
Explanation: http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_14-3/143_backhaul.html
Q3. What BGP feature improves on DDOS mitigation by allowing instructions that are more granular and allow for source address, destination, address, L4 details, and packet specifics to be analyzed?
A. RCMD
B. RTBH
C. BGP Flowspec
D. BGPSec
Answer: C
Explanation:
https://supportforums.cisco.com/document/12226726/asr9000xr-understanding-bgp-flowspec-bgp-fs
Q4. Which are the two purposes of the MPLS label value 1? (Choose two.)
A. it is used for MPLS OAM packets.
B. it indicates an implicit null label.
C. it is used for VPNv6 packets.
D. it is used to carry the QoS value in the label stack.
E. it indicates an explicit null label.
F. it indicates a router alert label.
Answer: C,F
Explanation: http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/4649-mpls-faq-4649.html#qa3
http://www.iana.org/assignments/mpls-label-values/mpls-label-values.xhtml
IPv4 Explicit NULL Label ----> 0
Router Alert Label ----> 1
IPv6 Explicit NULL Label -----> 2
Implicit NULL Label -----> 3
OAM Alert Labe -----> 14
Q5. In a multi-VRF scenario using OSPF as PE-CE routing protocol, which Cisco IOS command allows the CE to accepts routes from PE inside of each VRF?
A. router ospf <process id> vrf<vrf name> capability vrf-lite
B. router ospf<process id> vrf<vrf name> domain-id <value>
C. router ospf <process id> domain-id <value>
D. router ospf <process id> capability vrf-lite
Answer: A
Q6. A network engineer wants to deploy a solution that allows for 200 DS1 s and 100 DS0s that are multiplexed to a single interface on a Cisco 7600 Series Router. Which interface type satisfies this requirement?
A. Channelized T3/E3 (DS0)
B. Channelized OC-12/STM-4
C. OC-12/STM-4
D. OC-48c/STM-16
Answer: B
Q7. Refer to the exhibit.
MPLS VPN service has been provisioned for a customer by using inter-AS MPLS Option C. It is possible to redistribute ISP1 and ISP2 received loopback addresses into the local IGP. How many labels are associated with packet forwarding between the ASBRs?
A. 0
B. 1
C. 2
D. 3
E. 4
Answer: C
Q8. A service provider is implementing Ethernet solutions for clients that are not being provisioned within the MPLS core network. Which solution allows the Service Provider to complete Ethernet circuit provisioning in this scenario?
A. L2TPv3
B. VPLS
C. AToM
D. PPPoE
Answer: A
Explanation:
L2TPv3 defines the L2TP protocol for tunneling Layer 2 payloads over an IP core network using Layer 2 virtual private networks (VPNs). Benefits of this feature include the following:
. Simplifies deployment of VPNs.
. Does not require Multiprotocol Label Switching (MPLS) virtual private network (VPN).
. Supports Layer 2 tunneling over IP for any payload.
. Supports data encapsulation directly over IP (IP protocol number 115), not using User Datagram Protocol (UDP) .
Supports point-to-point sessions, not point-to-multipoint or multipoint-to-point sessions .
Supports sessions between the same Layer 2 protocols, for example Frame Relay-to-Frame Relay or ATM-to-ATM.
Q9. Customers connecting to a Service Provider for Internet access are intending to implement redundant peering. The design requirements call for preferring a primary link for both ingress and egress traffic. Secondary links should be used only during primary outages. What two BGP deployment options will accomplish this design goal? (Choose two.)
A. On the router handling the secondary link, advertise routes with a MED value of 0.
B. On the router handling the primary link, set the weight for all incoming routes to be a value of 0.
C. On the router handling the secondary link, advertise all routes with a longer AS-PATH value.
D. On the router handling the primary link, advertise all routes with a longer AS-PATH value.
E. On the router handling the secondary link, set the local preference for all incoming routes to be a value of 0.
Answer: C,E
Q10. Refer to the exhibit. R3 cannot install a route to R1-R2 subnet 2001:1:155:12::/64. Which action resolves this issue?
A. Add the redistribute ospf 1 include-connected command under the ipv6 router eigrp 10 process.
B. For the OSPF process, add the no shutdown command.
C. For prefix-list OSPF_INTO_EIGRP seq 20, replace the prefix with 2001:155:1:12::/64.
D. For route-map OSPF_INTO_EIGRP, add the set metric 1000 1 255 1 1500 command.
Answer: A
Explanation: http://www.ciscopress.com/articles/article.asp?p=2273507&seqNum=8
https://supportforums.cisco.com/document/12110191/understand-include-connected-keyword-use-ipv6-redistribution