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QUESTION 151
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 fortunnelingLayer 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 2tunnelingover 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.
QUESTION 152
Which is the main characteristic of LTE architecture comparing to other mobile architectures?
A. Provides supports to deploy Layer 3 MPLS VPN model, where other mobile architectures do not support.
B. Offers node redundancy with the static route configured on the IP NodeB using the HSRP/VRRP virtual ip address.
C. Provides a simpler, less hierarchical model with the capability of simplistically distributing the core gateways.
D. Introduces a hierarchical model with connection-oriented service requirements and one- to-one relationships.
Answer: C
QUESTION 153
If two routers, both reachable from one another, originate functionally equivalent type 2 external LSAs (i.e. same destination, cost and non-zero forwarding address). Which of the following statements would apply?
A. Only the LSA generated by the lowest RID ASBR will exist in the network
B. Two LSAs will exist in the network for this destination, but only the one generated by the highest RID ASBR will be used
C. Two LSAs will exist in the network for this destination, and both will be used
D. Only the LSA generated by the highest RID ASBR will exist in the network
Answer: D
QUESTION 154
When troubleshooting a DoS attack, a support engineer finds a huge number of packets that are destined to one of the core routers interface IP address. By the time the packets reach this core router, they have a TTL of 0. Based on Cisco platform running IOS 15.3S, which technique is most effective in resolving this problem?
A. Configure LPTS.
B. Configure an ACL on the core router interface.
C. Configure CoPP on the core router.
D. Configure policing on PE routers.
E. Configure a receive ACL on the core router.
Answer: C
QUESTION 155
Routes redistributed into an OSPF ASBR are which LSA type?
A. LSA type 6
B. LSA type 1
C. LSA type 2
D. LSA type 5
E. LSA type 3
F. LSA type 4
Answer: D
QUESTION 156
What three major tasks are performed by a Designated Intermediate System in an ISIS pseudonode environment? (Choose three.)
A. updating the pseudonode LSP
B. maintaining pseudonode link-state information
C. creating the pseudonode LSP
D. flooding LSPs over the LAN
E. election of the pseudonode
Answer: ACD
QUESTION 157
The mechanisms for distributing LDP are:
A. CEF and the FIB table
B. UDP and IP
C. A and B
D. RSVP and CEF
E. LDP and RSVP
Answer: E
QUESTION 158
Refer to the exhibit. Why is R3 unable to install 1.1.1.1/32 in its routing table?
A. 11.11.11.11/32 exists in the routing table, so the conditional advertising is not working.
B. The route is filtered out by the ip prefix-list ROUTE-IN command.
C. 11.11.11.11/32 is advertising in the BGP table, so conditional advertising is not working.
D. The bgp redistribute-internal command is missing under the R2 BGP process.
Answer: D
Explanation:
You can’t redistribute from iBGP to any IGP unless you have “bgp redistribute-internal”.
QUESTION 159
Refer to the exhibit. A web server is connected to a switch via two Gigabit Ethernet links. These two links are bundled into a single logical link that provides the aggregate bandwidth of 2 Gbps. The support engineer notices that traffic from the Internet to the web server uses both Gigabit Ethernet links. However, traffic from the web server to the Internet uses only one link.
Which CLI command on the exhibit causes this behavior?
A. lacp port-priority 32768 in interface configuration mode
B. channel-group 5 mode passive
C. lacp port-priority 32768 in global configuration mode
D. port-channel load-balance dst-mac
Answer: D
QUESTION 160
Refer to the exhibit. Which IOS command under the BGP VPNv4 address family implements a secondary backup path to the destination 192.168.1.1?
A. maximum-paths ibgp2
B. bgp additional-paths install
C. bgp recursion host
D. bgp advertise-best-external
Answer: B
Explanation:
http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/routing/command/reference/b_routing_cr42crs/b_routing_cr42crs_chapter_01.html#wp28 41279186
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