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Q1. In which two ways is IPv4 and IPv6 traffic handled in a network design that uses QoS deployment options? (Choose two.)
A. IPv6 and IPv4 traffic is treated in the same way by using a single QoS policy that classifies and matches on both protocols.
B. IPv6 traffic is treated differently than IPv4 by using the flow-label field, which is built into the IPv6 packet header.
C. IPv6 traffic does not require QoS because it uses to the flow-label field, which classifies and matches on the IPv6 protocol.
D. IPv6 traffic is treated differently than IPv4 by using two different QoS policies.
E. IPv6 traffic is treated differently than IPv4 because it uses only the DSCP value and not the IP precedence.
Answer: AD
Q2. Which option is a benefit of using N-Port Virtualization?
A. reduces the amount of domain IDs that are used in the fabric
B. does not need to create zoning
C. reduces latency when using local switching on Fibre Channel ports
D. allows trunking to the upstream switch
E. does not need to configure the upstream switches
Answer: A
Q3. When creating a network design, which one of these options provides for basic Layer 2 client isolation to prevent broadcast traffic exposure?
A. SVI
B. VLAN
C. routed port
D. edge port
Answer: B
Q4. 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
Q5. Refer to the exhibit.
Your company designed a network to allow server VLANs to span all access switches in a data center. In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. Which two features will improve STP stability within the network design? (Choose two.)
A. BPDU guard on access ports
B. Edge port on access ports
C. Root guard on access ports
D. BPDU guard on the aggregation switch downlinks toward access switches
E. Root guard on the aggregation switch downlinks toward access switches
F. Access switch pairs are explicitly determined to be root and backup root bridges
Answer: AE
Q6. An MPLS service provider is offering a standard EoMPLS-based VPLS service to Customer A, providing Layer 2 connectivity between a central site and approximately 100 remote sites. Customer A wants to use the VPLS network to carry its internal multicast video feeds, which are sourced at the central site and consist of 20 groups at 5 Mb/s each. Which service provider recommendation is the most scalable?
A. EoMPLS-based VPLS already carries multicast traffic in a scalable manner.
B. Replicate the multicast traffic on the P routers.
C. Replace VPLS with a Layer 3 MVPN solution to carry the streams between sites.
D. Use GRE tunnels to carry the streams between sites.
Answer: C
Q7. As part of a new network design, you are helping the Network Management Team to develop a proactive report to identify places in the network where problems may happen. The network management tool can poll the network devices only via SNMP GET operations. Which two threshold-crossing metrics should you include in this report? (Choose two.)
A. packet loss
B. CPU utilization
C. heat dissipation
D. IP reachability
E. energy consumption
F. link bandwidth utilization
Answer: BF
Q8. A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed. Which two of these actions would reduce that delay? (Choose two.)
A. Enable lower data link layer recovery systems to have an opportunity to restore the interface.
B. Increase the notification of interface flaps.
C. Reduce the time for the network to reconverge.
D. Increase network stability.
Answer: AD
Q9. Refer to the exhibit.
Assume that no multicast optimization is done on LAN switches A and B. Which feature can be used to optimize multicast traffic forwarding in this situation?
A. Enable IGMP snooping querier on both switches.
B. Configure a static MAC entry for the multicast server.
C. Disable IGMP snooping on both switches.
D. Disable the IGMP query election process.
E. Enable PIM Snooping on both switches.
Answer: A
Q10. A data center provider has designed a network using these requirements:
Two data center sites are connected to the public Internet.
Both data centers are connected to different Internet providers.
Both data centers are also directly connected with a private connection for the internal traffic, and public Internet traffic can also be routed at this direct connection.
The data center provider has only one /19 public IP address block.
Under normal conditions, Internet traffic should be routed directly to the data center where the services are located. When one Internet connection fails, the complete traffic for both data centers should be routed by using the remaining Internet connection. In which two ways can this routing be achieved? (Choose two.)
A. The data center provider must have an additional public IP address block for this routing.
B. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out with a low BGP weight and the /20 block from the remote data center is sent out with a higher BGP weight at both sites.
C. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out without path prepending and the /20 block from the remote data center is sent out with path prepending at both sites.
D. One /20 block is used for the first data center and the second /20 block is used for the second data center. Each /20 block is only sent out locally. The /19 block is sent out at both Internet connections for the backup case to reroute the traffic through the remaining Internet connection.
E. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out with a low BGP local preference and the /20 block from the remote data center is sent out with a higher BGP local preference at both sites.
F. BGP will always load-balance the traffic to both data center sites.
Answer: CD
Q11. Which two factors can significantly affect the OSPF network convergence time? (Choose two.)
A. the tuning of OSPF LSA timers
B. the number of OSPF routes
C. the diameter of the OSPF network
D. different processor capabilities of devices
Answer: AD
Q12. You are asked to design a large campus network that will be using multicast for data transport. Which feature should be enabled at the Layer 2 access edge for host-only ports?
A. PortFast
B. BPDU guard
C. PIM-SM
D. PIM query interval
Answer: A
Q13. You are designing a core MPLS-based network with a single OSPF area with no external routes. Which two mechanisms can be used to improve convergence time during a failure? (Choose two.)
A. incremental SPF
B. route filtering
C. graceful restart
D. BFD
Answer: AD
Q14. A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site should establish neighborships with all other routers using the OSPF routing protocol. Which three points must be considered regarding DR and BDR when different router platforms are used? (Choose three.)
A. It is a best practice that the routers with the most powerful hardware should take the role of the DR and BDR.
B. If the IP OSPF priority is the same for all routers, the highest loopback IP address and router ID will decide which routers will take the DR and BDR role during the selection process.
C. To select the DR and BDR, the IP OSPF priority must be set to a higher value than the default value at the DR and BDR during the selection process.
D. To select the DR and BDR, the IP OSPF priority must be set to a lower value than the default value at the DR and BDR during the selection process.
E. The role for the DR and BDR will be selected when a new OSPF router comes up.
F. To force two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all other OSPF routers.
Answer: ABF
Q15. Which design concern should be accounted for in all Layer 3 virtualization technologies?
A. Layer 3 redundancy
B. packet sizing
C. application usage
D. Layer 3 stability
Answer: B