Q61. You have created a network design that has two point-to-point Metro Ethernet circuits extending a single production VLAN between two data centers. Under normal circumstances, one circuit will carry traffic and spanning tree will block the other. If the company wants you to make use of both circuits to carry production traffic, which two technologies and features will you investigate to integrate into your network design? (Choose two.) 

A. EtherChannel 

B. MST 

C. Multichassis EtherChannel 

D. PVST+ 

Answer: AC 


Q62. A green data center is being deployed and a design requirement is to be able to readily scale server virtualization. Which IETF standard technology can provide this requirement? 

A. Transparent Interconnection of Lots of Links 

B. fabric path 

C. data center bridging 

D. unified fabric 

Answer:


Q63. A Service Provider network designer is considering the use of the G.8032 Ethernet Ring Protection mechanism in order to provide resiliency in the network. Which three concepts will be supported with the implementation G.8032? (Choose three.) 

A. Ring Protection Link (RPL) 

B. Ring Automatic Protection Switching (R-APS) 

C. Multi-Router Automatic Protection Switching (MR-APS) 

D. Automatic Protection Switching (APS) Channel 

Answer: ABD 


Q64. You are designing a large Frame Relay WAN for a customer. The routing protocol is OSPF. What is the effect on the routing table if the WAN interfaces are configured as point-to-multipoint? 

A. Only a route for the DR will be present in the routing table. 

B. Configuring point-to-multipoint has no effect on the routing table. The route that is configured with the area command will be seen in the routing table. 

C. Multipoint interfaces dynamically add the network of the connected interface. 

D. Multipoint interfaces dynamically add a /32 route for each neighbor in the WAN. 

Answer:


Q65. 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:


Q66. A network designer is working with a company to improve convergence at the Layer 2 control plane and decides to use LACP. Which of these components does LACP use to create the system ID? 

A. LACP system priority and switch MAC address 

B. LACP port priority and switch MAC address 

C. LACP port priority and port number 

D. LACP system priority and port number 

Answer:


Q67. In a redesign of a multiple-area network, it is recommended that summarization is to be implemented. For redundancy requirements, summarization is done at multiple locations for each summary. Some customers now complain of higher latency and performance issues for a server hosted in the summarized area. What design issues should be considered when creating the summarization? 

A. Summarization adds CPU overhead on the routers sourcing the summarized advertisement. 

B. Summarization prevents the visibility of the metric to the component subnets. 

C. Summarization creates routing loops. 

D. Summarization causes packet loss when RPF is enabled. 

Answer:


Q68. While reviewing an existing network design, you are discussing the characteristics of different STP versions. Which protocol minimizes unicast flooding during TCN in a Layer 2 switched network with many VLANs? 

A. STP 

B. MST 

C. PVRSTP 

D. PVSTP+ 

Answer:


Q69. Your design plan includes mutual redistribution of two OSPF networks at multiple locations, with connectivity to all locations in both networks. How is this accomplished without creating routing loops? 

A. Use route maps on the ASBRs to allow only internal routes to be redistributed. 

B. Use route maps on the ASBRs to allow internal and external routes to be redistributed. 

C. Use route maps on the ASBRs to set tags for redistributed routes. 

D. Use route maps on the ASBRs to filter routes with tags so they are not redistributed. 

Answer:


Q70. A network administrator is in charge of multiple IPsec VPN headend devices that service thousands of remote connectivity, point-to-point, IPsec/GRE tunnels. During a recent power outage, in which it was found that a backup power supply in one of those headend devices was faulty, one of the headend routers suffered a complete shutdown event. When the router was successfully recovered, remote users found intermittent connectivity issues that went away after several hours. Network operations staff accessed the headend devices and found that the recently recovered unit was near 100% CPU for a long period of time. How would you redesign the network VPN headend devices to prevent this from happening again in the future? 

A. Move the tunnels more evenly across the headend devices. 

B. Implement Call Admission Control. 

C. Use the scheduler allocate command to curb CPU usage. 

D. Change the tunnels to DMVPN. 

Answer: