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Q71. You manage an MPLS network. You are asked to classify traffic using the EXP bits from ingress to egress. What will allow you to accomplish this? 

A. Configure explicit-null on the penultimate router. 

B. Configure explicit-null on the egress router. 

C. Configure implicit-null on the penultimate router. 

D. Configure implicit-null on the egress router. 


Q72. An OSPF network has been designed with multiple areas to improve scalability. Which two statements are true? (Choose two.) 

A. Each router in the OSPF network runs the shortest-path-first algorithm to determine paths through the network. 

B. The Area Border Router for each area runs the shortest-path-first algorithm and floods its results through the area. 

C. Each area must have at least one link connecting it to each of the other areas of the OSPF network. 

D. OSPF provides loop-free routing within an OSPF routing domain, but does not guarantee symmetrical routing. 

Answer: A, D 

Q73. In the exhibit, NG-MVPN is used for a Layer 3 VPN. Which two statements are valid? (Choose two.) 

A. The egress PEs for I-PMSI tunnels should signal a label value of 3. 

B. The vrf-table-label parameter is configured on the PEs. 

C. PIM must be enabled on the PE and P routers. 

D. The provider tunnel shown is similar to a draft-Rosen default MDT. 

Answer: B, D 

Q74. Click the Exhibit button. 

You manage an MX series router (with 100 ms buffer size per port) that includes the configuration shown in the exhibit. Traffic marked with DSCP 000101 is entering the ge-1/0/4 interface at 102 Mbps. The traffic exits the device on the ge-1/0/5 interface. There is no other traffic transiting the router. What happens to traffic exceeding 100 Mbps? 

A. Traffic exceeding 100 Mbps is forwarded. 

B. Traffic exceeding 100 Mbps is buffered. 

C. Traffic exceeding 100 Mbps is redirected to a rate limiter. 

D. Traffic exceeding 100 Mbps is dropped. 


Q75. Click the Exhibit button. 

Based on the exhibit, why is the router not installing routes in the OSPF database into the routing table? 

A. The neighbor is stuck in the ExStart state 

B. The routes are going to a different table than inet.0 

C. There is an interface type mismatch 

D. There is an MTU mismatch 


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Q76. You have recently implemented a new Layer 2 VPN and it is not establishing. The show I2vpn connections command displays an out-of-range state. What is causing this problem? 

A. The local site ID value is too high for the label block. 

B. The VRF target community values do not match between sites. 

C. The VRF route distinguisher values do not match between sites. 

D. The local site ID is not defined. 


Q77. Referring to the exhibit, which configuration is required on the Layer 3 VPN PE router to classify EF packets from the core MPLS network into the expedited-forwarding queue? 

A. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers dscp default 

B. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers dscp DIFFSERVCLASS 

C. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers exp default 

D. Set class-of-service routing-instances CUST classifiers exp DIFFSERVCLASS- EXP 


Q78. Click the Exhibit button. 

You are building an interprovider VPN with ISP2 to support end-to-end connectivity for Customer A, as shown in the exhibit. For scalability reasons, the ASBR routers cannot exchange VPN routes for Customer A. Which two configurations are needed to support this requirement? (Choose two.) 

A. family inet-vpn on the ASBRs 

B. labeled-unicast on the ASBRs 

C. multihop EBGP between the PEs 

D. one VRF on the ASBRs for Customer A 

Answer: B, C 

Q79. Click the Exhibit button. 

R2 is announcing the 10.200/16 network to its IS-IS neighbors. No routing policies have been applied to R3. Referring to the exhibit, will R5 have 10.200/16 as an IS-IS route? 

A. Yes; IS-IS level 2 externals are passed from level 2 to level 1 by default. 

B. No; IS-IS level 2 externals are only passed to level 1 if wide-metrics-only is configured on all routers. 

C. Yes; all level 2 routing information is shared throughout an IS-IS domain by default. 

D. No; IS-IS does not announce routes from level 2 to level 1 unless a routing policy is applied. 


Q80. Referring to the exhibit, you want to save CPU processing load on the PE3 router by preventing the reception of routes belonging to Customer B. Which Layer 3 VPN scaling mechanism provides this functionality? 

A. route origin 

B. route refresh 

C. route reflection 

D. route target filtering 


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