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Designing Cisco Enterprise Networks (300-420 ENSLD) https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ensld-300-420.html

Newest Cisco 300-420 exam practice questions(100% free)

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QUESTION 1
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast
sources and receivers? (Choose two.)
A. IGMPv2
B. BIDIR-PIM
C. MP-BGP
D. MSDP
E. MLD
Correct Answer: CD

QUESTION 2
A network engineer must connect two sites across a public network using a secure tunneling technology that supports
multicast traffic. Which technology must be chosen?
A. IPsec
B. GRE
C. PPTP
D. GRE over IPsec
Correct Answer: D

QUESTION 3

Refer to the exhibit. Which solution decreases the EIGRP convergence time?
A. Enable subsecond timers
B. Increase the hold time value
C. Increase the dead timer value
D. Enable stub routing on the spokes
Correct Answer: D

QUESTION 4
Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?
A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.
B. GRE tunneling can be configured between fabric edges to connect one VN to another.
C. SGTs can be used to permit traffic from one VN to another.
D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.
Correct Answer: B

QUESTION 5
A company is using OSPF between its HQ location and a branch office. HQ is assigned area 0 and the branch office is
assigned area 1. The company purchases a second branch office, but due to circuit delays to HQ, it decides to connect
the new branch office to the creating branch office as a temporary measure. The new branch office is assigned area 2.
Which OSPF configuration enables all three locations to exchange routes?
A. The existing branch office must be configured as a stub area
B. A virtual link must be configured between the new branch office and HQ
C. A sham link must be configured between the new branch office and HQ
D. The new branch office must be configured as a stub area
Correct Answer: B

QUESTION 6
What are two benefits of designing an SD-WAN network fabric with direct Internet access implemented at every site?
(Choose two.)
A. It decreases latency to applications hosted by public cloud service provider.
B. It decreases latency on Internet circuits.
C. It increases the speed of delivery of site deployments through zero-touch provisioning.
D. It increases the total available bandwidth on Internet circuits.
E. It alleviates network traffic on MPLS circuits.
Correct Answer: AE

QUESTION 7
DRAG DROP
Drag and drop the properties from the left onto the protocols they describe on the right.

Correct Answer:

Reference: https://www.cisco.com/c/en/us/td/docs/iosxml/ios/prog/configuration/166/b_166_programmability_cg/b_166_programmability_cg_chapter_01011.html 

QUESTION 8
An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that
supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?
A. Native
B. IEEE
C. OpenConfig
D. IETF
Correct Answer: D

QUESTION 9
An engineer is looking for a standards-driven YANG model to manage a multivendor network environment. Which model
must the engineer choose?
A. Native
B. OpenConfig
C. IETF
D. IEEE NETCONF
Correct Answer: C

QUESTION 10
An engineer must design a multicast network for a financial application. Most of the multicast sources also receive
multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees.
Which multicast protocol satisfies these requirements?
A. PIM-SSM
B. PIM-SM
C. MSDP
D. BIDIR-PIM
Correct Answer: B

QUESTION 11
Which two best practices must be followed when designing an out-of-band management network? (Choose two.)
A. Enforce access control
B. Facilitate network integration
C. Back up data using the management network
D. Ensure that the management network is a backup to the data network
E. Ensure network isolation
Correct Answer: AE

QUESTION 12
Which routes does the overlay management protocol advertise in an SD-WAN overlay?
A. underlay, MPLS, and overlay
B. primary, backup, and load-balanced
C. prefix, TLOC, and service
D. Internet, MPLS, and backup
Correct Answer: C

QUESTION 13
A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves
as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is
down?
A. Use EIGRP to establish a neighbor relationship with the main office via L3VPN MPLS and the IPSEC VPN tunnel.
B. Use BGP with the multipath feature enabled to force traffic via the primary path when available.
C. Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup
connection.
D. Use OSPF with a passive-interface command on the backup connection.
Correct Answer: C

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