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Q121. On a VoIP solution design, which option shows one-way latency, packet loss, and jitter measurements that ensure acceptable voice quality? 

A. Latency: 110 ms Packet loss: 1% Jitter: 40 ms 

B. Latency: 130 ms Packet loss: 0.5% Jitter: 30 ms 

C. Latency: 150 ms Packet loss: 1.25% Jitter: 20 ms 

D. Latency: 170 ms Packet loss: 0.75% Jitter: 10 ms 

Answer:


Q122. When network summaries are created for access networks in a network design, how does it change the behavior of the Shortest Path First (SPF) running in a backbone area? 

A. There would be fewer incremental SPFs. 

B. There would be fewer partial SPFs. 

C. There would be fewer full SPFs. 

D. There would be no change with the SPFs. 

Answer:


Q123. When a multiprotocol environment is designed to have several routers redistribute among the routing domains, how can routing loops be avoided? 

A. by using the AS-PATH attribute 

B. by using route tags 

C. by activating split horizon 

D. by implementing spanning tree 

Answer:


Q124. A service provider creates a network design that runs MPLS in its WAN backbone using OSPF as the IGP routing protocol. What would be two effects of additionally implementing MPLS-TE? (Choose two.) 

A. MPLS-TE is required to reroute traffic within less than 1 second in case of a link failure inside the backbone. 

B. MPLS-TE is required to route different MPLS QoS service classes through different paths. 

C. MPLS-TE and OSPF cannot be used together inside one MPLS network. 

D. MPLS-TE cannot use OSPF for the traffic path calculation. 

E. MPLS-TE is required to create backup paths independently from the IGP. 

Answer: B,E 


Q125. For a storage area network design, which technology allows a switch to support multiple Fibre Channel IDs per fabric port? 

A. N-Port Identifier Virtualization 

B. Inter-Virtual Storage Area Network Routing 

C. Zoning 

D. Fabric Port Trunking 

E. Node Port Virtualization 

F. Expansion Port Trunking 

Answer:


Q126. Two medium-sized companies recently merged and would like to share their two campus buildings as soon as possible. Employees should be able to sit and work in either building. If the IP addresses in the networks overlap, which virtualization technology could be deployed quickly to achieve the business objective? 

A. MPLS-VPN 

B. VRF-LITE 

C. EoMPLS 

D. L2TPv3 

Answer:


Q127. Your company will attach to a new Gigabit Ethernet-based wide area network from the local service provider for remote connectivity. Each connection will have a 150 Mb/s committed information rate. For the design of this new service, which QoS mechanism should be used to ensure low packet loss toward the service provider network? 

A. shaping 

B. policing 

C. CBWFQ 

D. RED 

Answer:


Q128. In a large enterprise network with multiple data centers and thousands of access devices, OSPF is becoming unstable due to link flapping. The current design has the access devices multihomed to large aggregation routers at each of the data centers. How would you redesign the network to improve stability? 

A. Add a layer of regional Layer 3 aggregation devices, but leave the ABR function on the data center aggregation routers. 

B. Add a layer of regional Layer 2 aggregation devices, but leave the ABR function on the data center aggregation routers. 

C. Add a layer of regional Layer 3 aggregation devices and move the ABR function to the regional aggregation device. 

D. Add a layer of regional Layer 2 aggregation devices and move the ABR function to the regional aggregation device. 

Answer:


Q129. Refer to the exhibit. 

Your company designed a network to allow server VLANs in a data center to span all access switches. In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. In which three ways should the design of the STP domain be optimized for server and application performance? (Choose three.) 

A. Use loop guard on access ports. 

B. Use PortFast on access ports. 

C. Use root guard on access ports. 

D. Align Layer 2 and Layer 3 forwarding paths. 

E. Use BPDU Skew Detection on access ports. 

F. Explicitly determine root and backup root bridges. 

Answer: BDF 


Q130. Which mechanism should be added to a network design to identify unidirectional Spanning Tree Protocol failures through BPDU loss? 

A. UDLD 

B. loop guard 

C. BPDU guard? 

D. root guard 

Answer: