Ace 300-420 Certification with 170 Actual Questions [Q61-Q78]

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Ace 300-420 Certification with 170 Actual Questions

PASS Cisco 300-420 EXAM WITH UPDATED DUMPS

NEW QUESTION 61
Drag and drop the descriptions from the left onto the corresponding VPN types on the rights.

Answer:

Explanation:

 

NEW QUESTION 62
When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?

  • A. encapsulation of traffic with GRE or VTI
  • B. IPsec forwarding using tunnel mode
  • C. additional bandwidth for headend
  • D. IPsec forwarding using transport mode

Answer: A

 

NEW QUESTION 63
In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

  • A. DHCP options or manual configuration
  • B. DNS records or DHCP options
  • C. vManage or DNS records
  • D. ZTP or manual configuration

Answer: D

Explanation:
Explanation/Reference:

 

NEW QUESTION 64
Drag and drop the properties from the left onto the protocols they describe on the right.

Answer:

Explanation:

 

NEW QUESTION 65
An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements. The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?

  • A. DiffServ
  • B. WRED
  • C. LLQ
  • D. IntServ

Answer: D

Explanation:
Section: Network Services

 

NEW QUESTION 66
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 67
A company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link. Which approach achieves this goal and does not impact router CPU utilization?

  • A. Utilize BFD and keep the default BGP timers
  • B. Utilize BFD and tune the multiplier to 50
  • C. Lower the BGP hello interval
  • D. Decrease the BGP keepalive timer

Answer: A

 

NEW QUESTION 68
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

Answer:

Explanation:

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 69
What is one function of the vSmart controller in an SD-WAN deployment?

  • A. provides a data-plane at branch offices to pass traffic through the SD-WAN network
  • B. provides centralized network management and a GUI to monitor and operate the SD-WAN overlay
  • C. responsible for the centralized control plane of the SD-WAN network
  • D. orchestrates vEdge and cEdge connectivity

Answer: C

Explanation:
Explanation/Reference:

 

NEW QUESTION 70
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 71
The customer solution requires QoS to support streaming multimedia over a WAN. An architect chooses to use Per-Hop Behavior. Which solution should the engineer use to of mark traffic traveling between branch sites?

  • A. CBWFQ with DSCP AF3
  • B. LLQ with DSCP AF4
  • C. CBWFQ with DSCP AF2
  • D. LLQ with DSCP EF

Answer: D

 

NEW QUESTION 72
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point.
Which multicast protocol meets these requirements?

  • A. any-source multicast
  • B. BIDIR-PIM
  • C. PIM-SM
  • D. PIM-SSM

Answer: D

 

NEW QUESTION 73
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, but R3 drops the traffic
  • B. R1 forwards the traffic to R3 in order to reach R2
  • C. R1 load-balances across the paths through R3 and R4 to reach R2
  • D. R1 has no route to R2 and drops the traffic

Answer: D

Explanation:
The EIGRP stub routing feature will prevent the remote device from advertising core routes back to the distribution devices. Routes learned by the remote device from Distribution 1 will not be advertised to Distribution 2. Therefore, Distribution 2 will not use the remote device as a transit for traffic destined to the network core https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-eigrp-stub-rtg.html

 

NEW QUESTION 74
How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?

  • A. VRFs are used to segment traffic at Layer 3.
  • B. 5-tuples and ACLs are used to permit or deny traffic.
  • C. SGTs and SGTACLs are used to control access to various resources.
  • D. VLANs are used to segment traffic at Layer 2.

Answer: C

 

NEW QUESTION 75
Drag and drop the description from the left onto the corresponding WAN connectivity types and categories on the right.

Answer:

Explanation:

 

NEW QUESTION 76
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?

  • A. any-source multicast
  • B. BIDIR-PIM
  • C. PIM-SM
  • D. PIM-SSM

Answer: D

Explanation:
Explanation
PIM-SSM is suitable for when well-known sources exist within the local PIM domain and for broadcast applications. Also, PIM-SSM eliminates the RPs and shared trees

 

NEW QUESTION 77
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 78
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