VALID EXAM CISCO 300-420 REGISTRATION, 300-420 CERTIFIED QUESTIONS

Valid Exam Cisco 300-420 Registration, 300-420 Certified Questions

Valid Exam Cisco 300-420 Registration, 300-420 Certified Questions

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q374-Q379):

NEW QUESTION # 374
An engineer is designing a BGP network for a large customer. To permit efficient scaling, the BGP domain is split into clusters. Which peering solution should be used between the route reflectors in different clusters for the BGP routes to be propagated appropriately?

  • A. The route reflectors should be nonclients with regards to each other.
  • B. The route reflectors should be made dents of each other.
  • C. The route reflectors should have peering through another nonclient router.
  • D. The route reflectors should not have any kind of BGP peering.

Answer: A

Explanation:
When configure multi-cluster of BGP RRs, RRs should peer with each RR as non-client according to CCIE routing TCP/IP volumn 2 @2001 page 127
- if the route was learned from nonclient IBGP peer, it is reflected to client only (here RR's route learnt from other RRs is able to reflect to its client)
- if the route was learned from a client, it is reflected to all nonclients and clients, except for the originating client. (routes learnt within the cluster can reflect to nonclient, RR)
- it the route was learnt from an EBGP peer, it is reflected to all nonclients and clients.


NEW QUESTION # 375
A global organization with several branches hired a network architect to design an overlay VPN solution. The branches communicate with each other frequently. The customer expects to add more branches in the future. To meet the customer's security requirements, the architect plans to provide traffic protection using dynamic IPsec tunnels. Which solution should the architect choose?

  • A. DMVPN
  • B. EasyVPN
  • C. GETVPN
  • D. L2TP

Answer: A


NEW QUESTION # 376
Which design achieves SD-WAN control plane redundancy?

  • A. Deploying using a virtual platform like UCS or CSP
  • B. Using multiple instances of vManage in clusters
  • C. Configuring BFD on the WAN Edge routers
  • D. Managing the underlay network with OMP

Answer: D

Explanation:
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/ha-scaling/ios-xe-17/high-availability-book-xe/m-high-availability-and-scaling.html Software mechanisms ensure rapid recovery from a failure. To provide a resilient control plane, the Cisco SD-WAN Overlay Management Protocol (OMP) regularly monitors the status of all Cisco IOS XE SD-WAN devices in the network and automatically adjusts to changes in the topology as devices join and leave the network. For data plane resiliency, the Cisco SD-WAN software implements standard protocol mechanisms, specifically Bidirectional Forwarding Detection (BFD), which runs on the secure IPsec tunnels between routers.


NEW QUESTION # 377
Refer to the exhibit. A network engineer must design a BGP solution based on:
- The route reflector must have one or more direct physical connections to the core routers (R3 and R4).
- The route reflector must have full redundancy and avoid a single
point of failure.
- R2 to R1 link utilization is 90%, and the remaining links are less
than 50% utilized.
Which two solutions must the design include? (Choose two.)

  • A. Configure R5 to be a client of R3 and R4
  • B. Configure R2 to be a client of R1 and R4.
  • C. Configure R1 to be a client of R2 and R4.
  • D. Configure R3 to be a client of R2 and R4.
  • E. Configure R4 to be a client of R1 and R3.

Answer: D,E

Explanation:
We want to try and centralize our Route Reflector, in this example all routers qualify to be Route Reflectors because they have at least 1 link connected to R3/R4 the core Routers.
- We want to try avoid link between R1 and R2 because it's caping at 90%.
- Answer A uses the link that's 90%
- Answer B is not a centralize location, R5 is way down there.
- Answer C utilize the link that's at 90%
- D & E both have redundancy and do not use the link that has 90% and it's centralized.


NEW QUESTION # 378
An architect must develop a campus network solution that includes:
- logically segmented and isolated networks
- ability to communicate between network segments when required
- support for overlapping IP addresses
- widely available technologies to avoid purchasing specialized
equipment
Which solution must the architect select?

  • A. vPC with HSRP
  • B. VSS with IGP
  • C. 802.1Q with HSRP
  • D. VRF-Lite with OSPF

Answer: D


NEW QUESTION # 379
......

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