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Q1. You are designing an IPv4 any source multicast redundancy solution. Which technology ensures the quickest RP convergence?
A. Auto-RP
B. Embedded RP
C. bootstrap router
D. MSDP anycast RP
Answer: D
Q2. You have designed a network to support two offices connected by a T1. Your router serial interfaces will be configured with encapsulation PPP. What will happen to your EIGRP neighbors if there is an LCP failure once your network is implemented?
A. Your neighbors will drop after the EIGRP timers expire.
B. Your neighbors will stay up because the link has not gone down.
C. Your neighbors will drop immediately.
D. Your neighbors will drop and EIGRP will begin the query process.
Answer: D
Q3. A network designer wants to improve a company network design due to multiple network crashes. Which technology would allow for the restore of a network connection without informing the Layer 3 protocol?
A. Bidirectional Forwarding Detection
B. automatic protection switching
C. UniDirectional Link Detection
D. Ethernet OAM
Answer: B
Q4. A company has these requirements for access to their wireless and wired corporate LANs using 802.1x:
. Client devices that are corporate assets and have been joined to the Active
Directory domain are allowed access.
. Personal devices must not be allowed access.
. Clients and access servers must be mutually authenticated.
Which solution meets these requirements?
A. Protected Extensible Authentication Protocol/Microsoft Challenge Handshake Authentication Protocol Version 2 with user authentication
B. Extensible Authentication Protocol-Transport Layer Security with machine authentication
C. Extensible Authentication Protocol-Transport Layer Security with user authentication
D. Protected Extensible Authentication Protocol/Microsoft Challenge Handshake Authentication Protocol Version 2 with machine authentication
Answer: B
Q5. 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: B
Q6. 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
Q7. A company would like to distribute a virtual machine (VM) hosting cluster between three data centers with the capability to move VMs between sites. The connectivity between data centers is IP only and the new design should use the existing WAN. Which Layer 2 tunneling technology do you recommend?
A. VPLS
B. L2TPv3
C. OTV
D. AToM
Answer: C
Q8. You are working on a network design plan for a company with approximately 2000 sites. The sites will be connected using the public Internet. You plan to use private IP addressing in the network design, which will be routed without NAT through an encrypted WAN network. Some sites will be connected to the Internet with dynamic public IP addresses, and these addresses may change occasionally. Which VPN solution will support these design requirements?
A. GET VPN must be used, because DMVPN does not scale to 2000 sites.
B. DMVPN must be used, because GET VPN does not scale to 2000 sites.
C. GET VPN must be used, because private IP addresses cannot be transferred with DMVPN through the public Internet.
D. DMVPN must be used, because private IP addresses cannot be transferred with GET VPN through the public Internet.
E. GET VPN must be used, because DMVPN does not support dynamic IP addresses for some sites.
F. DMVPN must be used, because GET VPN does not support dynamic IP addresses for some sites.
Answer: D
Q9. You work as a network designer for a company that is replacing their Frame Relay WAN with an MPLS VPN service, where the PE-to-CE routing protocol is BGP. The company has 3000 routes in their distribution routers, and they would like to advertise their access routers through the MPLS network. Their service provider, however, only supports 1000 prefixes per VRF. Which two design solutions can be applied to ensure that your access routers will be able to reach all devices in your network? (Choose two.)
A. Use prefix lists on your distribution routers to control which routes are sent to the MPLS network.
B. On your distribution routers, configure null routes and aggregate routes for the prefixes in your network.
C. Configure your distribution routers to send a default route to the MPLS network.
D. Summarize the routes on the MPLS WAN interfaces of your distribution routers.
Answer: BC
Q10. A company wants to use SSM as the multicast routing protocol inside its network. Some of its multicast applications do not support IGMPv3. In which two ways can the mapping be done when these applications send IGMPv2 join messages? (Choose two.)
A. The Layer 2 switches can send a request to a DNS server.
B. The Layer 3 multicast routers can send a request to a DNS server.
C. The mapping can be done statically at the Layer 2 switches.
D. The mapping can be done statically at the Layer 3 multicast routers.
E. The Layer 2 switches can transform the IGMPv2 join to an IGMPv3lite join.
F. The Layer 3 multicast routers can transform the IGMPv2 join to an IGMPv3lite join.
Answer: BD
Q11. The network administrator of a branch office network has decided to deploy Unicast RPF at the access layer. He insists that the design must guarantee that all the packets arriving on the router interfaces are assigned to the same interface subnet.
Which mode of Unicast RPF would you recommend as the lead network designer?
A. uRPF strict mode
B. uRPF loose mode
C. uRPF VRF mode
D. RPF feasible mode
Answer: A
Q12. You work for a large company that has just acquired another smaller company. You have been asked to lead a group of SAN experts from both companies to design the integration plan that will be used to interconnect the SANs and migrate the data from the newly acquired company to the main storage arrays. The first thing that the team discovers is that the two SANs have the same domain IDs.
As the SAN team lead, what would you advise your team to do so that you can interconnect the two SANs while minimizing disruption?
A. Use FCIP with Write Acceleration and IVR version 1 with a transit VSAN to expedite the data transfer between the two SANs.
B. Change the domain IDs on both SANs so that they are both unique and then connect ISLs between the SANs.
C. Use IVR NAT with a transit VSAN between the SANs.
D. The two SANs cannot be merged without disruption.
Answer: C
Q13. To improve the stability of a global network, you have been tasked with changing the design to include link-state topology summarization. What are two issues that you should address as part of the design? (Choose two.)
A. slow convergence
B. suboptimal routing
C. traffic black-holing
D. packet reordering
Answer: BC
Q14. You are the lead network designer hired by Service Provider XYZ to deploy CoS functionality on the core MPLS network (P routers). The goal of the network design is to provide a complete CoS solution to all customers that purchase services such as dedicated Internet access, MPLS L3VPN, and L2VPN (pseudowire). Service Provider XYZ has these design requirements:
The network supports four service queues with equal treatment for delay, jitter, and packet loss.
Queues are numbered 0-3, where 0 is the default queue.
Three queues have one treatment.
One queue has either one or two treatments.
If your design includes eight CoS queues on the Service Provider XYZ MPLS PE router ingress (CE facing) interface, how will customer traffic be classified as it enters the MLS P routers?
A. The eight CoS queues in the MPLS P router are remapped to the eight CoS queues.
B. Traffic is classified on the MPLS PE routers on core facing interface. The DSCP value is mapped into EXP field where multiple EXP settings (2+) will be assigned to a single queue throughout the MPLS P routers.
C. Discard the traffic from the eight CoS queues that does not match the four CoS queues of the MPLS P routers.
D. The 8 CoS queues in the MPLS P router are remapped to four 4 flow-label queues.
Answer: B
Q15. Refer to the exhibit.
Your junior design engineer presents this configuration design. What is the next-hop router for CE3, and why?
A. CE1. BGP weight is higher than CE2.
B. CE2. EBGP administrative distance is lower than RIP.
C. CE2. The link between CE2 and PE1 has more bandwidth than CE1-to-PE1.
D. CE1. HSRP on CE1 is in active state.
Answer: D