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Q1. As a service provider you must support a Layer 2 virtualization protocol that does not include the use of label switching. Which option can meet this design requirement? 


B. VRF-Lite 

C. QinQ 

D. 802.3ad 


Q2. Currently a service provider provides IPv4 traceroute services between MPLS PE routers. The provider wants to implement IPv6 with MPLS 6PE/6VPE and then provide parallel IPv6 traceroute services between MPLS PE routers. Which two design solutions provide this service? (Choose two.) 

A. The P routers must support ICMPv6. 

B. The PE routers must support ICMPv6. 

C. The P routers must support full IPv6. 

D. The PE routers must support full IPv6. 

Answer: BD 

Q3. There is an MPLS-enabled link constantly flapping on an MPLS VPN network. Given that the network runs OSPF as the IGP protocol, which design mechanism will stabilize the network and avoid constant reconvergences? 


B. IP Event Dampening 

C. OSPF fast hellos 

D. partial SPF 


Q4. A large service provider offers VoIP and Video services to business customers. Which three areas should the service provider monitor related to these services? (Choose three.) 

A. bandwidth utilization 

B. service response time 

C. packet loss 

D. jitter 

E. latency 

F. availability 

Answer: CDE 

Q5. You have been asked to design a wireless network solution that will implement context-aware services on an existing network that was initially deployed for data traffic only. Which two design principles would you follow to increase the location accuracy with the least possible impact on the current setup? (Choose two.) 

A. Use directional antennas to provide better cell separation. 

B. Add access points along the perimeter of the coverage area. 

C. Install additional APs in monitor mode where the cochannel interference would otherwise be affected. 

D. Increase the AP density to create an average interaccess point distance of less than 40 ft. 

E. Fine tune the access points radio configuration to have a higher average transmission power to achieve better coverage. 

Answer: BC 

Q6. Which three factors slow down network convergence? (Choose three.) 

A. constant interface flapping 

B. lack of redundant paths 

C. inconsistent topology states between routers 

D. transport network failing to generate LoS 

E. wrong summarization in ABRs 

Answer: ACD 

Q7. A switched network is being designed to support a manufacturing factory. Due to cost constraints, fiber-based connectivity is not an option. Which design allows for a stable network when there is a risk of interference from the manufacturing hardware in use on the factory floor? 

A. Design the network to include UDLD to detect unidirectional links and take them out of service. 

B. Design the network to include EtherChannel bundles to prevent a single-link failure from taking down a switch interconnection point. 

C. Design the network to include loop guard to prevent a loop in the switched network when a link has too much interference. 

D. Design the network to include BackboneFast on all devices to accelerate failure convergence times. 


Q8. You are designing a network that will run EIGRP over a Metro Ethernet service that does not employ a link-loss technology. What will be the impact on convergence if there is a break in the end-to-end Layer 2 connectivity within the service provider network? 

A. The routers will immediately lose their adjacencies and converge. 

B. The routing protocol will not converge until the hold timers have expired. 

C. The switch ports connected to the router will go down and the routers will immediately converge. 

D. The VLAN on the switches will go inactive, the ports associated on the switch will go down, and the routers will immediately converge. 


Q9. You are the lead IP/MPLS network designer of a service provider called XYZ. You are leading a design discussion regarding IPv6 implementation in the XYZ MPLS network, using MPLS 6PE/6VPE techniques. Currently, XYZ provides IPv4 multicast services over an MPLS network by using MVPN, and would like to provide parallel IPv6 multicast services. Which three multicast solutions should be enabled? (Choose three.) 

A. native IPv6, only for multicast services 

B. MPLS 6PE/6VPE, because it provides IPv6 multicast support by default 

C. an overlay model using Layer 2 MPLS tunnels 

D. PIM-DM to enable IPv6 multicast in conjunction with MPLS 6PE/6VPE 

E. MVPN for IPv6 multicast service 

Answer: ACE 

Q10. Which two OSPF design considerations should you implement to support the eventual growth of a network, so that CPU and memory are unaffected by the size and complexity of the link-state database in a large service provider network? (Choose two.) 

A. Turn on route dampening. 

B. Create network summaries. 

C. Turn on the Incremental SPF feature. 

D. Add more memory. 

E. Turn on packet pacing. 

F. Add redundancy between critical locations. 

Answer: CE