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Q371. Which two are features of DMVPN? (Choose two.) 

A. It does not support spoke routers behind dynamic NAT. 

B. It requires IPsec encryption. 

C. It only supports remote peers with statically assigned addresses. 

D. It supports multicast traffic. 

E. It offers configuration reduction. 

Answer: D,E 

Explanation: 

DMVPN Hub-and-spoke deployment model: In this traditional topology, remote sites (spokes) are aggregated into a headend VPN device at the corporate headquarters (hub). Traffic from any remote site to other remote sites would need to pass through the headend device. Cisco DMVPN supports dynamic routing, QoS, and IP Multicast while significantly reducing the configuration effort. 

Reference: http://www.cisco.com/c/en/us/products/collateral/security/dynamic-multipoint-vpn-dmvpn/data_sheet_c78-468520.html 


Q372. Which option is the default point of insertion for the BGP cost community? 

A. before best path calculation 

B. after best path calculation 

C. after the IGP metric comparison 

D. after the router ID comparison 

Answer: C 


Q373. Which two statements about the C-bit and PW type are true? (Choose two.) 

A. The C-bit is 1 byte and the PW type is 15 bytes. 

B. The PW type indicates the type of pseudowire. 

C. The C-bit is 3 bits and the PW type is 10 bits. 

D. The C-bit set to 1 indicates a control word is present. 

E. The PW type indicates the encryption type. 

Answer: B,D 

Explanation: 

The control word carries generic and Layer 2 payload-specific information. If the C-bit is set to 1, the advertising PE expects the control word to be present in every pseudowire packet on the pseudowire that is being signaled. If the C-bit is set to 0, no control word is expected to be present. Pseudowire Type—PW Type is a 15-bit field that represents the type of pseudowire. 

Reference: http://www.ciscopress.com/articles/article.asp?p=386788&seqNum=2 


Q374. Which AS_PATH attribute can you use to prevent loops when implementing BGP confederations? 

A. AS_CONFED_SET 

B. AS_SEQUENCE 

C. AS_CONFED_SEQUENCE 

D. AS_SET 

Answer: C 


Q375. Refer to the exhibit. 

If a connection failure occurs between R1 and R2, which two actions can you take to allow CR-1 to reach the subnet 192.168.192.0/24 on R2? (Choose two.) 

A. Create a static route on R1 for subnet 192.168.192.0/24 towards R3 and redistribute it into OSPF. 

B. Turn up a BGP session between CR-1 and R1. 

C. Create a static route on R1 for subnet 192.168.192.0/24 towards R3 and redistribute it into BGP. 

D. Turn up an EIGRP session between R1 and R3 with AS 65535. 

E. Create an OSPF virtual link between CR-1 and R2 to bypass R1. 

Answer: A,B 


Q376. Refer to the exhibit. 

Which BGP feature allows R1 to send R2 a list of prefixes that R2 is prevented from advertising to R1? 

A. route refresh 

B. Prefix-Based Outbound Route Filtering 

C. distribute lists 

D. prefix lists 

Answer: B 


Q377. DRAG DROP 

Drag and drop the MPLS term on the left to the function it performs on the right. 

Answer: 


Q378. Which mechanism does Cisco recommend for CE router interfaces that face the service provider for an EVPL circuit with multiple EVCs and multiple traffic classes? 

A. HCBWFQ 

B. LLQ 

C. tail drop 

D. WRED 

Answer: A 

Explanation: 

In a simple handoff, packets may be discarded in the service provider network, either because of congestion on a link without an appropriate QoS policy or because of a policer QoS configuration on the service provider network that serves to rate limit traffic accessing the WAN core. To address these issues, QoS on the CE device is applied at a per-port level. A QoS service policy is configured on the outside Ethernet interface, and this parent policy includes a shaper that then references a second or subordinate (child) policy that enables queueing within the shaped rate. This is called a hierarchical CBWFQ (HCBWFQ) configuration. 

Reference: http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/Ethernet_Acces s_for_NG_MAN_WAN_V3-1_external.html 


Q379. Which two commands enable OSPF graceful shutdown? (Choose two.) 

A. nsf cisco 

B. ip ospf shutdown 

C. shutdown 

D. nsf ietf helper disable 

Answer: B,C 


Q380. Refer to the exhibit. 

For which reason could a BGP-speaking device in autonomous system 65534 be prevented from installing the given route in its BGP table? 

A. The AS number of the BGP is specified in the given AS_PATH. 

B. The origin of the given route is unknown. 

C. BGP is designed only for publicly routed addresses. 

D. The AS_PATH for the specified prefix exceeds the maximum number of ASs allowed. 

E. BGP does not allow the AS number 65535. 

Answer: A 

Explanation: 

BGP is considered to be a 'Path Vector' routing protocol rather than a distance vector routing protocol since it utilises a list of AS numbers to describe the path that a packet should take. This list is called the AS_PATH. Loops are prevented because if a BGP speaking router sees it's own AS in the AS_PATH of a route it rejects the route.