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Q471. Refer to the exhibit. 

Router 1 and Router 2 use HSRP to provide first hop redundancy for hosts on the 10.1.2.0/24 network. 

Which feature can provide additional failover coverage for the PC? 

A. Cisco Express Forwarding 

B. NetFlow 

C. Accounting 

D. Enhanced Object Tracking 

Answer:

Explanation: 

HSRP has a mechanism for tracking the interface line-protocol state. The enhanced object tracking feature separates the tracking mechanism from HSRP. It creates a separate, standalone tracking process that can be used by processes other than HSRP. This feature allows tracking of other objects in addition to the interface line-protocol state. A client process, such as HSRP, can register an interest in tracking objects and request notification when the tracked object changes state. Several clients can track the same object, and can take different actions when the object changes state. This feature increases the availability and speed of recovery of a router system and decreases outages and outage duration. 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/blades/3040/software/release/12-2_44_se/configuration/guide/swhsrp.html#wp1083927 


Q472. Which statement describes the purpose of the Payload Type field in the RTP header? 

A. It identifies the signaling protocol. 

B. It identifies the codec. 

C. It identifies the port numbers for RTP. 

D. It identifies the port numbers for RTCP. 

Answer:

Explanation: 

PT, Payload Type. 7 bits: Identifies the format of the RTP payload and determines its interpretation by the application. A profile specifies a default static mapping of payload type codes to payload formats. Additional payload type codes may be defined dynamically through non-RTP means. An RTP sender emits a single RTP payload type at any given time; this field is not intended for multiplexing separate media streams. A full list of codecs and their payload type values can be found at the link below: 

Reference: http://www.networksorcery.com/enp/protocol/rtp.htm 


Q473. Refer to the exhibit. 

All routers are running EIGRP and the network has converged. R3 and R4 are configured as EIGRP Stub. If the link between R1 and R3 goes down, which statement is true? 

A. R1 sends traffic destined to 192.168.0.100 via R2. 

B. R2 does not have a route to 192.168.0.0/24 in the routing table. 

C. The prefix 192.168.0.0/24 becomes stuck-in-active on R4. 

D. R3 does not advertise 192.168.0.0/24 to R4 anymore. 

Answer:


Q474. Which two parameters does the Tunnel Mode Auto Selection feature select automatically? (Choose two.) 

A. the tunneling protocol 

B. the transport protocol 

C. the ISAKMP profile 

D. the transform-set 

E. the tunnel peer 

Answer: A,B 

Explanation: 

The Tunnel Mode Auto Selection feature eases the configuration and spares you about knowing the responder’s details. This feature automatically applies the tunneling protocol (GRE or IPsec) and transport protocol (IPv4 or IPv6) on the virtual template as soon as the IKE profile creates the virtual access interface. This feature is useful on dual stack hubs aggregating multivendor remote access, such as Cisco AnyConnect VPN Client, Microsoft Windows7 Client, and so on. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnips/configuration/xe-3s/sec-sec-for-vpns-w-ipsec-xe-3s-book/sec-ipsec-virt-tunnl.html 


Q475. Which two routing protocols are not directly supported by Cisco PfR route control, and rely on the Cisco PfR subfeature PIRO? (Choose two.) 

A. BGP 

B. EIGRP 

C. Static routing 

D. OSPF 

E. IS-IS 

Answer: D,E 

Explanation: 

Protocol Independent Route Optimization (PIRO) introduced the ability of Performance Routing (PfR) to search for a parent route—an exact matching route, or a less specific route—in the IP Routing Information Base (RIB), allowing PfR to be deployed in any IP-routed environment including Interior Gateway Protocols (IGPs) such as OSPF and IS-IS. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios/pfr/configuration/guide/15_1/pfr_15_1_book/pfr-piro.html 


Q476. How is the MRU for a multilink bundle determined? 

A. It is negotiated by LCP. 

B. It is manually configured on the multilink bundle. 

C. It is manually configured on all physical interfaces of a multilink bundle. 

D. It is negotiated by NCP. 

E. It is negotiated by IPCP. 

Answer:


Q477. Which two statements about IPsec VTI implementation are true? (Choose two.) 

A. The IKE SA can be bound to the VTI and the crypto map. 

B. The transform set can be configured only in tunnel mode. 

C. SVTIs support only a single IPsec SA. 

D. SVTIs support IPv4 packets that carry IPv6 packets. 

Answer: B,C 


Q478. Which statement is true about IGMP? 

A. Multicast sources send IGMP messages to their first-hop router, which then generates a PIM join message that is then sent to the RP. 

B. Multicast receivers send IGMP messages to their first-hop router, which then forwards the IGMP messages to the RP. 

C. IGMP messages are encapsulated in PIM register messages and sent to the RP. 

D. Multicast receivers send IGMP messages to signal their interest to receive traffic for specific multicast groups. 

Answer:

Explanation: 

In the example shown above, the receivers (the designated multicast group) are interested in receiving the video data stream from the source. The receivers indicate their interest by sending an Internet Group Management Protocol (IGMP) host report to the routers in the network. The routers are then responsible for delivering the data from the source to the receivers. 

Reference: 

http://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ip_multicast/White_papers/mcst_o vr.html 


Q479. Which two message types allow PIM snooping to forward multicast traffic? (Choose two.) 

A. hello messages 

B. leave messages 

C. membership query messages 

D. bidirectional PIM DF election messages 

Answer: A,D 


Q480. Refer to the exhibit. 

The interface FastEthernet0/1 of both routers R4 and R5 is connected to the same Ethernet segment with a multicast receiver. Which two statements are true? (Choose two) 

A. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R4. 

B. Both routers R4 and R5 will send PIM join messages to the RP. 

C. Only router R5 will send a multicast join message to the RP. 

D. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R5. 

Answer: C,D 

Explanation: 

Even though R4 is the active HSRP router, traffic will flow through R5 and only R5 will send the join messages. The Multicast DR is elected by the higher IP address or priority. R5 has 192.168.2.2 and R4 has 192.168.2.1. R5 is the DR which sends all packets to the RP.