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Q51. A MPP has been implemented in a Cisco IOS-XR device. Which are the two results that will occur? (Choose two.) 

A. If MPP is disabled and a protocol is activated, all interfaces cannot pass traffic 

B. MPP configuration changes doesn't affect active sessions established before the changes 

C. RP/DRP Ethernet Interfaces are not default out-of-band interfaces 

D. Management traffic to RP from all non-MPP interfaces is dropped 

E. Interfaces configured for out-of-band MPP are still part of global routing/forwarding 

Answer: B,D 


Q52. DRAG DROP 

Drag and drop the IPFIX terminology on the left to the correct description on the right. Not all options will be used. 

Answer: 


Q53. In a PE-CE scenario using OSPF as the routing protocol, a down-bit set can be advertised in which OSPF LSA type? 

A. type 1 LSA 

B. type 2 LSA 

C. type 3 LSA 

D. type 5 LSA 

E. type 7 LSA 

Answer: C 


Q54. On a Cisco ASR 1000 Series, which hardware component is used to build and distribute the forwarding plane information to all line cards? 

A. RP 

B. ESP 

C. SIP 

D. PRP 

Answer: B 


Q55. Refer to the exhibit. 

Which MPLS TE component keeps track of the flooding and admission control? 

A. MPLS TE priorities 

B. RSVP 

C. link attributes 

D. link manager 

Answer: B 


Q56. Refer to the exhibit. 

A service provider has multiple time sources in the environment for NTP. The time source at 10.0.4.1 is intended to be seen as a primary time source. What command can be issued on PE4 to fix the configuration, ensuring the proper NTP source will be issued? 

A. ntp peer 10.0.4.1 

B. ntp peer 10.0.4.1 prefer 

C. ntp server 10.0.4.1 source GigabitEthernet0/0 

D. ntp server 10.0.4.1 prefer 

Answer: D 

Explanation: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_nx_os_cg/sm_3ntp.html#wp1106725 


Q57. 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. 


Q58. Which MPLS technology will achieve LAN extensions over the service provider backbone? 

A. AToM 

B. VPLS 

C. L2VPN 

D. L2TPv3 

Answer: B 

Explanation: https://tools.ietf.org/html/rfc7041 


Q59. Which technology is a forwarding decision point in a PE router that provides flexibility to make many Layer 2 flow decisions within an interface? 

A. local connect 

B. AToM 

C. VPLS 

D. pseudowire 

E. EFP 

Answer: E 


Q60. What are two advantages of Cisco IOS XR Software over Cisco IOS Software? (Choose two.) 

A. a configuration that is grouped by interface 

B. a configuration that is grouped by process 

C. one-stage configuration 

D. a monolithic OS 

E. a two-stage configuration 

Answer: B,E