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NEW QUESTION 65
You are the Cisco Network Designer in P4S. Which of these
practices should you follow when designing a Layer 3 routing protocol?
- A. Build squares for deterministic convergence.
- B. Summarize routes at the distribution to the core to limit EIGRP queries or OSPF LSA propagation.
- C. Build inverted U designs for deterministic convergence.
- D. Never peer on transit links.
Answer: B
Explanation:
Section: (none)
Explanation/Reference:
NEW QUESTION 66
Which two OSPF network type combinations can you use in the design of a Phase 3 DMVPN that requires spoke-to-spoke direct traffic? (Choose two.)
- A. hub as broadcast and spokes as non-broadcast
- B. hub as point-to-multipoint and spokes as point-to-point
- C. hub as point-to-multipoint and spokes as non-broadcast
- D. hub as point-to-point and spokes as point-to-point
Answer: A,B
NEW QUESTION 67
Which resource will be targeted by a TCP SYN flood attack?
- A. send buffers on transit routers
- B. connection tables on the target host
- C. SYN cookies on the target host
- D. shared memory on the routers closest to the target
Answer: B
NEW QUESTION 68
Refer to the exhibit. Service Provider A has offered to help Service Provider B to provide local connectivity for a customer who has a business operation in North America and recently opened an office in Asia. The service to be offered for the customer is a Layer 3 MPLS VPN. Service Provider A and Service Provider B have never shared any business dealings or interconnected their networks. What is the most secure and easiest way for the two service providers to interconnect?
- A. eBGP VPNv4 multihop between route reflectors
- B. carrier supporting carrier
- C. back-to-back VRF
- D. VPNv4 peering between ASBRs
Answer: C
NEW QUESTION 69
Which two aspects are considered when designing a dual hub, dual DMVPN cloud topology? (Choose two.)
- A. spoke-to-spoke traffic will transit the hub unless spokes exchange dynamic routing directly
- B. hub sites must connect to both DMVPN clouds
- C. will only work with single-tier headend architecture
- D. recommended for high availability
- E. requires all sites to have dual Internet connections
Answer: C,D
NEW QUESTION 70
What are two benefits of using BFD for failure detection in the design of a network?
(Choose two.)
- A. BFD can be used for all types of network interfaces.
- B. BFD eliminates router protocol hello notification.
- C. BFD can be used as a generic and consistent failure detection mechanism for EIGRP,
IS-IS, and OSPF. - D. BFD can provide failure detection in less than one second.
- E. BFD is independent of the network protocol.
Answer: C,D
NEW QUESTION 71
Which two components are the responsibility of the customers in a Platform as a Service offering? (Choose 2)
- A. APIs
- B. applications
- C. hardware
- D. data
- E. infrastructure connectivity
Answer: B,D
NEW QUESTION 72 
Refer to the exhibit. Company ABC is a Tier 3 service provider that offers Layer 2 and Layer 3 transport for small/medium enterprise customers in the US. Most of their network is built on Layer 2 MPLS circuits from a Tier 1 provider. Many Company ABC customers are using overlay VPN technologies and independent routing protocols, and they are affected with unacceptable convergence time after every major outage in the core of the Tier 1 provider. Which long-term redesign increases network availability?
- A. Customers fine tune their routing protocol for faster convergence
- B. Company ABC replaces the Layer 2 MPLS circuit from the Tier 1 service provider with dark fiber/DWDM- based transport.
- C. Customers replace their own overlay VPN service with the Company ABC Layer 3 VPN service.
- D. Company ABC should adopt a full-mesh POP connectivity.
Answer: D
Explanation:
Section: Design Considerations
Explanation/Reference:
NEW QUESTION 73
A new video multicast application is deployed in the network. The application team wants to use the 239.0.0.1 multicast group to stream the video to users. They want to know if this choice will impact the existing multicast design. What impact will their choice have on the existing multicast design?
- A. Because 239.0.0.1 is a private multicast range, a flood of PIM packets that have to be processed by the CPU and hosts will be sent by the routers in the network.
- B. The multicast application sends too many packets into the network and the network infrastructure drops packets.
- C. Because 239.0.0.1 is a private multicast range, the rendezvous point has to send out constant group updates that will have to be processed by the CPU and hosts.
- D. The 239.0.0.1 group address maps to a system MAC address, and all multicast traffic will have to be sent to the CPU and flooded out all ports.
Answer: C
NEW QUESTION 74
Refer to the exhibit.
In this design, which technology would provide for the best use of resources to provide end-to- end Layer 2 connectivity?
- A. LACP
- B. PAgP
- C. Multichassis EtherChannel
- D. MSTP
Answer: C
NEW QUESTION 75
A network has several routers running IS-IS Layer 1/Layer 2 mode on the same Ethernet segment. Which action reduces the number of the IS-IS adjacencies to a minimum in this segment?
- A. Change all routers connected to this segment to a single-level area
- B. Make sure that the interface priority on the backup DIS is lower than the primary DIS
- C. Change half the routers to be Layer 1-only and the other half to be Layer 2-only on this segment
- D. Define only one router on the segment to be DIS
Answer: A
Explanation:
Section: Evolving Technologies
NEW QUESTION 76 
Refer to the exhibit Assume that no multicast optimization is done on LAN switches A and B Which two solutions can be used to optimize multicast traffic forwarding in this situation? (Choose two )
- A. Enable PIM snooping on both switches
- B. Disable the IGMP query election process
- C. Enable IGMP snooping querier on both switches
- D. Disable IGMP snooping on both switches
- E. Configure a static MAC entry for the multicast server
Answer: C,D
NEW QUESTION 77
Refer to the exhibit.
You are designing an IPv4 unicast Layer 3 VPN load-balancing solution. Which L3VPN feature needs to be configured on the PE routers to support the design requirement?
- A. disable split horizon on PE2 and PE3
- B. matching route distinguishers
- C. matching route target values
- D. nonmatching route distinguishers
Answer: D
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 78
Which two fast reroute technologies provide the highest level of protected path coverage in a ring topology?
(Choose two.)
- A. per-prefix LFA
- B. automatic protection switching
- C. per-link LFA
- D. remote LFA
- E. MPLS TE FRR
Answer: D,E
Explanation:
Section: Evolving Technologies
NEW QUESTION 79
MPLS is a standards-approved technology for speeding up network traffic flow and making it easier to manage. Two MPLS service providers (SP1 and SP2) are offering inter-provider RFC 2547/4364-based IP- VPN service to an enterprise customer. IP traffic among some of the customer's sites has to traverse both of the service providers. The service providers and the enterprise do not know what the minimum MTU is along the end-to-end path.
How to guarantee that large packets are not dropped for MTU-related reasons?
- A. configure the IP sender or senders to set the DF flag in the IP header
- B. configure the IP sender or senders to clear the DF flag in the IP header
- C. enable Path MTU Discovery on all devices within the enterprise
- D. enable Path MTU Discovery on all devices within SP1 and SP2
Answer: C
Explanation:
Section: (none)
Explanation/Reference:
NEW QUESTION 80
Your customer asks you to assist with their traffic policy design. They want to guarantee a minimum amount of bandwidth to certain traffic classes. Which technique would you advise them to implement?
- A. Modular QoS CLI
- B. traffic shaping
- C. committed accessrRate
- D. policy-based routing
Answer: A
Explanation:
Explanation/Reference:
given correct answer.
NEW QUESTION 81
What are three key design principles when using a classic hierarchical network model? (Choose three.)
- A. The core layer controls access to resources for security.
- B. The core layer is designed first, followed by the distribution layer and then the access layer.
- C. The core layer provides server access in a small campus.
- D. A hierarchical network design model aids fault isolation.
- E. The core layer should be configured with minimal complexity.
- F. A hierarchical network design facilitates changes.
Answer: D,E,F
NEW QUESTION 82
Which design consideration of policy-based routing is true?
- A. It decreases failure detection time
- B. lt routes traffic destined to a set of users through different exit points
- C. It uses RSVP to differentiate traffic flows, so queuing mechanisms can prioritize them.
- D. It can create microloops during network reconvergence
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_pi/configuration/15-mt/iri-15-mt-book/iri-pbr.html
NEW QUESTION 83
Enterprises A and B agree to merge, but keep IGP and BGP independent of each other.
They are served by a common ISP for their Internet connectivity. During the merge, A and
B will provision a point-to-point link between the two networks. What is the simplest design option that will allow data to travel between A and B without passing through the ISP?
- A. configure iBGP between the two networks and block each others route's from the ISP
- B. configure EBGP between the two networks and block each other's routes from the ISP
- C. configure OSPF between the two networks and block each others route's from the ISP
- D. configure OSPF and make OSPF routes more attractive than the same routes learned via EBGP from the ISP
- E. configure OSPF and make OSPF routes less attractive than the same routes learned via
EBGP from the ISP
Answer: B
NEW QUESTION 84
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