Validate your Skills with Updated 300-420 Exam Questions & Answers and Test Engine [Q56-Q74]

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Validate your Skills with Updated 300-420 Exam Questions & Answers and Test Engine

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NEW QUESTION 56
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. EasyVPN
  • B. GETVPN
  • C. L2TP
  • D. DMVPN

Answer: D

 

NEW QUESTION 57
How do endpoints inside an SD-Access network reach resources outside the fabric?

  • A. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network
  • B. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
  • C. Fabric borders use VRFs to map VNs to VRFs
  • D. a VRF fusion router is used to map resources in one VN to another VN

Answer: A

 

NEW QUESTION 58
Refer to the exhibit.
C0FD9 F48C9ACDC725EA850EC2476EE1E

An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24 toward network 10.10.20.0/24. Which solution should the architect include in the design?

  • A. Configure the link to provide multiarea adjacency.
  • B. Lower the Administrative Distance for OSPF area 0.
  • C. Place the link into area 2 and install a new link between R1 and R2 in area 0.
  • D. Configure the OSPF cost of the link to a value lower than 30.

Answer: D

 

NEW QUESTION 59
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

Answer:

Explanation:

Explanation

In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed. Dialin mode is supported over gRPC in only 64-bit platforms In a dial-out mode, the router initiates a session to the destinations based on the subscription. All 64-bit IOS XR platforms (except for NCS 6000 series routers) support gRPC and TCP protocols. All 32-bit IOS XR platforms support only TCP.

 

NEW QUESTION 60
Drag and drop the descriptions from the left onto the Cisco SD-WAN component they describe on the right.

Answer:

Explanation:

Explanation
Answer Area
is responsible for traffic forwarding, security, encryption, QoS,and routing protocols distributes routes and policy information via OMP enables centralized provisioning and simplifies network changes enables the communication of devices that sit behind NAT

 

NEW QUESTION 61
Refer to the exhibit. The full EIGRP routing table is advertised throughout the network. Currently, users experience data loss when any one link in the network fails. An architect optimizes the network to reduce the impact when a link fails. Which solution should the architect include in the design?

  • A. Summarize the access layer networks from the aggregation layer toward the core layer.
  • B. Reduce the default EIGRP hello interval and hold time.
  • C. Summarize the access layer networks from each access layer switch toward the aggregation layer.
  • D. Run BFD on the inter links between EIGRP neighbors.

Answer: D

 

NEW QUESTION 62
Refer to the exhibit.

An engineer is designing a routing solution for a customer. The design must ensure that a failure of network
10.1.0.0/24, 10.1.2.0/24, 10.2.1.0/24, or 10.2.3.0/24 does not impact the core. It also requires fast convergence time during any link failover in the core or access networks. Which solution must the engineer select?

  • A. Enable graceful restart on routers A and C.
  • B. Enable summarization on routers A and C.
  • C. Add aggregation layer between core and access networks.
  • D. Enable FRR for the connected networks of routers A and C.

Answer: D

 

NEW QUESTION 63
Refer to the exhibit.

EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?

  • A. R1 forwards the traffic to R3 in order to reach R2
  • B. R1 forwards the traffic to R3, but R3 drops the traffic
  • C. R1 has no route to R2 and drops the traffic
  • D. R1 load-balances across the paths through R3 and R4 to reach R2

Answer: A

 

NEW QUESTION 64
An architect must address sustained congestion on the access and distribution uplink of network. QoS has already been implemented and optimized, but it is no longer effective in ensuring optimal network performance. Which two solutions should the architect use to improver network performance. (Choose two)

  • A. Utilize random early detection to manage queues
  • B. Reconfigure QoS based on the IntServ model
  • C. Configure selective packet discard to drop noncritical network traffic.
  • D. Bundle additional uplinks into logical EtherChannels
  • E. Implement higher-speed uplink interfaces

Answer: A,C

 

NEW QUESTION 65
A customer with an IPv4 only network topology wants to enable IPv6 connectivity while preserving the IPv4 topology services. The customer plans to migrate IPv4 services to the IPv6 topology, then decommission the IPv4 topology. Which topology supports these requirements?

  • A. 6VPE
  • B. NAT64
  • C. dual stack
  • D. 6to4

Answer: C

 

NEW QUESTION 66
An engineer is upgrading a company's main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system. Which solution should be included in this design?

  • A. Use a route-map to prevent all prefixes from being advertised to either ISP.
  • B. Modify the local-preference for routes incoming from the primary ISP.
  • C. Tag incoming routes from both ISPs with BGP community no-export.
  • D. Lower the MED for updates sent to the secondary ISP.

Answer: C

Explanation:
Section: WAN for Enterprise Networks

 

NEW QUESTION 67
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

Answer:

Explanation:

In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed. Dialin mode is supported over gRPC in only 64-bit platforms In a dial-out mode, the router initiates a session to the destinations based on the subscription. All 64-bit IOS XR platforms (except for NCS 6000 series routers) support gRPC and TCP protocols. All 32-bit IOS XR platforms support only TCP.
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/asr9000/telemetry/b-telemetry-cg-asr9000-61x/b-telemetry-cgasr9000-61x_chapter_010.html#id_36445

 

NEW QUESTION 68
An engineer must design a VPN solution for a company that has multiple branches connecting to a main office.
What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)

  • A. support for anycast gateway
  • B. dynamic spoke-to-spoke tunnels
  • C. support for AES 256-bit encryption
  • D. lower traffic overhead
  • E. greater scalability

Answer: B,E

Explanation:
Section: WAN for Enterprise Networks

 

NEW QUESTION 69
An engineer must propose a solution for a campus network that includes the capability to create multiple Layer
3 virtual networks. Each network must have its own addressing structure and routing table for data forwarding.
The solution must be scalable to support hundreds of virtual networks and allow simple configuration and management with minimal administrative overhead. Which solution does the engineer recommend?

  • A. hop-by-hop EVN
  • B. hop-by-hop VRF-Lite
  • C. multihop IPsec tunneling
  • D. multihop MPLS core

Answer: A

Explanation:
Section: WAN for Enterprise Networks

 

NEW QUESTION 70
Refer to the exhibit.

EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?

  • A. R1 forwards the traffic to R3 in order to reach R2
  • B. R1 forwards the traffic to R3, but R3 drops the traffic
  • C. R1 has no route to R2 and drops the traffic
  • D. R1 load-balances across the paths through R3 and R4 to reach R2

Answer: A

 

NEW QUESTION 71
An engineer is designing a Layer 3 campus network running EIGRP between the core, aggregation, and access layers. The access layer switches will be connected to the aggregation layer using Layer 3 copper connections.
The engineer wants to improve convergence time for access layer switch failures. Which technique must the design include?

  • A. EIGRP summarization from access to aggregation layer
  • B. EIGRP summarization from core to aggregation layer
  • C. reducing the EIGRP Hello / Hold timer values
  • D. enabling BFD for EIGRP on the access layer uplinks

Answer: D

 

NEW QUESTION 72
Which control-plane technology allows the same subnet to exist across multiple network locations?

  • A. ISE mobility services
  • B. VXLAN
  • C. LISP
  • D. FabricPath

Answer: C

Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html

 

NEW QUESTION 73
How are wireless endpoints registered in the HTDB in a Cisco SD-Access architecture?

  • A. Border nodes first register endpoints and then update the HTDB
  • B. Fabric WLCs update the HTDB as new clients connect to the wireless network
  • C. Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP
  • D. Fabric APs update the HTDB with the clients' ElD and RLOC

Answer: B

 

NEW QUESTION 74
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