Cisco 300-420 Exam Questions

Latest Lead4Pass 300-420 dumps for 300-420 ENSLD exam 2023

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Number of exam questions	Exam name	Exam code	Last updated
15	Designing Cisco Enterprise Networks (ENSLD)	300-420	300-420 dumps

Question 1:

Which consideration must be taken into account when using the DHCP relay feature in a Cisco SD-Access Architecture?

A. DHCP-relay must be enabled on fabric edge nodes to provide the correct mapping of DHCP scope to the local anycast gateway.

B. A DHCP server must be enabled on the border nodes to allow subnets to span multiple fabric edges.

C. DHCP servers must support Cisco SD-Access extensions to correctly assign IPs to endpoints in an SD-Access fabric with anycast gateway.

D. DHCP Option-82 must be enabled to map the circuit IP option to the access fabric node where the DHCP discovery originated.

Correct Answer: D

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/tech_notes/sda_dhcp/b_cisco_sda_dhcp.html

Question 2:

Which design consideration must be made when dual vEdge routers are deployed at a branch site?

A. Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.

B. HSRP priorities must match the OMP routing policy to prefer one vEdge over the other.

C. Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly.

D. Configure BFD between vEdge routers to detect sub-second link failures.

Correct Answer: A

Question 3:

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

A. Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP

B. Fabric WLCs update the HTDB as new clients connect to the wireless network

C. Border nodes first register endpoints and then update the HTDB

D. Fabric APs update the HTDB with the clients\’ ElD and RLOC

Correct Answer: B

Question 4:

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 must optimize the network to reduce the impact when a link fails. Which solution should the architect include in the design?

A. Run BFD on the interlinks between EIGRP neighbors.

B. Summarize the access layer networks from each access layer switch toward the aggregation layer.

C. Reduce the default EIGRP hello interval and hold time.

D. Summarize the access layer networks from the aggregation layer toward the core layer.

Correct Answer: A

Question 5:

Which OSPF area blocks LSA Type 3, 4, and 5, but allows a default summary route?

A. normal

B. stub

C. NSSA

D. totally stubby

Correct Answer: D

Question 6:

An engineer uses Postman and YANG to configure a router with: OSPF process ID 400 network 192.168.128.128/25 enabled for Area 0

Which get-config reply verifies that the model set was designed correctly?

A. Option A

B. Option B

C. Option C

D. Option D

Correct Answer: B

Question 7:

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

A. DHCP options or manual configuration

B. manage or DNS records

C. ZTP or manual configuration

D. DNS records or DHCP options

Correct Answer: C

Question 8:

Which type of rendezvous point deployment is standards-based and supports dynamic RP discovery?

A. Auto-RP

B. Anycast-RP

C. bootstrap router

D. static RP

Correct Answer: C

Question 9:

Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:

1.

conserve bandwidth, memory, and CPU processing

2.

prevent suboptimal routing

3.

avoid any unnecessary queries

Which two solutions must the architect select? (Choose two.)

A. route summarization

B. prefix lists

C. distribute lists

D. stub routing

E. static redistribution

Correct Answer: AC

Question 10:

Which two functions are provided by the Cisco SD-WAN orchestration plane? (Choose two.)

A. centralized provisioning

B. primary authentication point

C. NAT traversal facilitation

D. Zero Touch Provisioning

E. troubleshooting and monitoring

Correct Answer: BC

Question 11:

At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?

A. Layer4

B. Layer 2

C. Layer 1

D. Layer 3

Correct Answer: B

Question 12:

Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?

A. Run an eBGP session within different VRFs for each ISP.

B. Advertise a default route for downstream routers within the client network.

C. Apply the AS-path prepend feature for ISP2.

D. Apply route filtering such that the client advertises only routes originating from its own AS.

Correct Answer: B

Question 13:

DRAG DROP

Drag and drop the characteristics from the left onto the Yang model they describe on the right.

Select and Place:

Correct Answer:

Question 14:

Which PIM mode uses a shared tree only?

A. bidirectional

B. sparse

C. dense

D. source-specific

Correct Answer: A

In bidirectional mode, traffic is routed only along a bidirectional shared tree that is rooted at the rendezvous point (RP) for the group https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-tech-oview.html

Question 15:

What is the purpose of a Cisco SD-Access underlay network?

A. to abstract IP-based connectivity from physical connectivity

B. to emulate LAN segments to transport Layer 2 frames over a Layer 3 network

C. to establish physical connectivity between switches and routers

D. to provide virtualization by encapsulating network traffic over IP tunnels

Correct Answer: C

…

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Tips: Answers will be announced at the end of the article

QUESTION 1:

An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions:

1. The routers will not learn any prefix with a subnet mask greater than /24.

2. The routers will determine the routes to include in the routing table based on the length of the mask alone.

3. The routers will make this selection regardless of the service provider configuration.

Which solution should the engineer include in the design?

A. Use a route map and access list to block the desired networks, and apply the route map to BGP neighbors inbound.

B. Use a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors outbound.

C. Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.

D. Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors inbound.

QUESTION 2:

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

QUESTION 3:

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

A. VLANs are used to segment traffic at Layer 2.
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. VRFs are used to segment traffic at Layer 3.

QUESTION 4:

Which two routing protocols allow for unequal cost load balancing? (Choose two.)

A. EIGRP
B. IS-IS
C. BGP
D. OSPF
E. RIPng

QUESTION 5:

DRAG DROP
Drag and drop the characteristics from the left onto the telemetry mode they apply to on the right.
Select and Place:

Correct Answer:

QUESTION 6:

How is redundancy achieved among Cisco vBond Orchestrators in a Cisco SD-WAN deployment?

A. The IP addresses of all Orchestrators are mapped to a single DNS name.
B. The closest Orchestrator to each Cisco WAN Edge router is selected.
C. Cisco WAN Edge routers are configured with all Orchestrators using their IP addresses and priority.
D. A single Cisco Orchestrator is deployed in each network.

QUESTION 7:

Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets.

An architect must create a design that ensures AS64512 does not become a transit AS. Which filtering solution must the architect choose?

A. no-advertise
B. next-hop
C. no-export
D. maximum-prefix

QUESTION 8:

Refer to the exhibit. An engineer must design an automatic failover solution. The solution should allow HSRP to detect a WAN 1 failure and initiate an automatic failover, making router R2 the active HSRP router. Which two solutions should the engineer choose? (Choose two.)

A. Implement Enhanced Object Tracking on roster R1
B. use a floating static route
C. Implement IP SLA on router R1
D. Implement PBR on router R1
E. use IP source routing

QUESTION 9:

Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)

A. LISP proxy ETR
B. host tracking database
C. policy mapping
D. map server
E. endpoint registration

QUESTION 10:

How is sub-second failure of a transport link detected in a Cisco SD-WAN network?

A. Hellos are sent between the WAN Edge routers and the vSmart controller.
B. BFD runs on the IPsec tunnels between WAN Edge routers.
C. BGP is used between WAN Edge routers and the vSmart controller.
D. Link state change messages are sent between vSmart controllers.

QUESTION 11:

Refer to the exhibit. The distribution switches serve as the layer 3 boundary. HSRP preemption is enabled. When the primary switch comes back after a failure, traffic is initially dropped. Which solution must be implemented to improve the design?

A. split-horizon
B. summarization
C. down bit
D. route tags

QUESTION 12:

Refer to the exhibit. An architect must design an IP addressing scheme for a multisite network connected via a WAN transit. The campus site must accommodate 12,000 devices and the branch sites must accommodate 1,000 devices.

Which address scheme optimizes network device resources, contains convergence events to the different blocks of the network, and ensures future growth of the network?

A. Campus: 10.0.0.0/18 Branch1: 10.0.192.0/21 Branch2: 10.0.200.0/21
B. Campus: 10.0.0.0/16 Branchi: 10.255.0.0/20 Branch2: 10.255.16.0/20
C. Campus: 10.0.0.0/10 Branch1: 10.64.0.0/10 Branch2: 10.128.0.0/10
D. Campus: 10.0.0.0/20 Branch1: 10.0.64.0/21 Branch2: 10.0.128.0/21

QUESTION 13:

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

Published answer:

Numbers:

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Q8

Q9

Q10

Q11

Q12

Q13

Answers:

D

B

C

AC

IMAGE

A

D

AC

BD

B

D

A

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admin April 18, 2022

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2022 300-420 [Q1]:

An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider\’s switch to the customer\’s router is 1Gbps. Which solution should the engineer include to prevent potential issues with choppy voice traffic?

A. Reduce the bandwidth of the connection to the router.
B. Implement hierarchical QoS with a parent policing policy.
C. Implement hierarchical QoS with a parent shaping policy.
D. Add a bandwidth statement to the router interface.

Correct Answer: C

2022 300-420 [Q2]:

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 the convergence time for access layer switch failures. Which technique must the design include?

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

Correct Answer: A

2022 300-420 [Q3]:

Which two statements about VRRP object tracking are true? (Choose two)

A. The priority of a VRRP device can change in accordance with the up or down status of a VRRP object
B. The VRRP interface priority must be manually configured by the administrator
C. A VRRP group can track only one object at a time
D. VRRP can track the status of interfaces and routes
E. VRRP supports only interface tracking

Correct Answer: AD

2022 300-420 [Q4]:

Which two border nodes are available in the Cisco SD-Access architecture? (Choose two.)

A. extended border
B. edge border
C. internal border
D. anywhere border
E. intermediate border

Correct Answer: CD

2022 300-420 [Q5]:

Which topology within a network underlay eliminates the need for first-hop redundancy protocols while improving fault tolerance, increasing resiliency, and simplifying the network?

A. virtualized topology
B. routed access topology
C. Layer 2 topology
D. logical fabric topology

Correct Answer: D

2022 300-420 [Q6]:

DRAG-DROP
Drag and drop the elements from the left onto the functions they perform in the Cisco SD-WAN architecture on the right.
Select and Place:

Correct Answer:

2022 300-420 [Q7]:

An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area. Which area type does the engineer choose to provide minimal router resource utilization, while still allowing for full connectivity to the rest of the network?

A. not so stubby
B. totally not so stubby
C. totally stubby area
D. stubby area

Correct Answer: D

2022 300-420 [Q8]:

An organization is designing a detailed QoS plan that limits bandwidth to specific rates. Which two parameters are supported by the traffic policing feature? (Choose two.)

A. violating
B. marking
C. shaping
D. bursting
E. conforming

Correct Answer: BC

2022 300-420 [Q9]:

A customer is discussing QoS requirements with a network consultant. The customer has specified that endto-end path verification is a requirement. Which QoS solution meets this requirement?

A. IntServ model with RSVP to support the traffic flows
B. DiffServ model with PHB to support the traffic flows
C. marking traffic at the access layer with DSCP to support the traffic flows
D. marking traffic at the access layer with CoS to support the traffic flows

Correct Answer: A

2022 300-420 [Q10]:

Refer to the exhibit.

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 OSPF cost of the link to a value lower than 30.
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 link to provide multiarea adjacency.

Correct Answer: A

2022 300-420 [Q11]:

Which two routing protocols allow for unequal cost load balancing? (Choose two.)

A. EIGRP
B. IS-IS
C. BGP
D. OSPF
E. RIPng

Correct Answer: AC

2022 300-420 [Q12]:

Which type of rendezvous point deployment is standards-based and supports dynamic RP discovery?

A. Auto-RP
B. Anycast-RP
C. bootstrap router
D. static RP

Correct Answer: C

2022 300-420 [Q13]:

Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R1. Which solution should the design include?

A. Use update-source to specify the Loopback interface.
B. Use next-hop-self attributes only for routes that are learned from eBGP peers.
C. Configure the eBGP TTL to support eBGP multihop.
D. Use maximum paths to install multiple paths in the routing table.

Correct Answer: D

……

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Latest Lead4Pass 300-420 dumps for 300-420 ENSLD exam 2023

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300-420 ENSLD Exam: 300-420 dumps are effective preparation material

You can try the 300-420 ENSLD Exam practice online first:

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Published answer:

300-420 Dumps update to inform new and existing customers

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