Download Designing Cisco Enterprise Networks (300-420 ENSLD).300-420.VCEplus.2025-03-22.148q.tqb

Vendor: Cisco
Exam Code: 300-420
Exam Name: Designing Cisco Enterprise Networks (300-420 ENSLD)
Date: Mar 22, 2025
File Size: 14 MB
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Demo Questions

Question 1
Refer to the exhibit.
 
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 R4. Which solution should the design include?
  1. Use update-source to specify the Loopback interface. 
  2. Use next-hop-serf attributes only for routes that are learned from eBGP peers.
  3. Configure the eBGP TTL to support eBGP multihop.
  4. Use maximum-paths to install multiple paths in the routing table.
Correct answer: D
Question 2
Refer to the exhibit.
 
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 become a transit AS. 
Which filtering solution must the architect choose?
  1. Maximum-prefix
  2. No-advertise
  3. Next-hop
  4. No Export
Correct answer: A
Question 3
Refer to the exhibit.
 
Refer to the exhibit. Where must an architect plan for route summarization for the topology?
  1. from the core toward the aggregation and the access toward the aggregation
  2. from the core toward the aggregation and the aggregation toward the core
  3. from the aggregation toward the access and the access toward the aggregation 
  4. from the aggregation toward the core and the aggregation toward the access
Correct answer: D
Question 4
An engineer must design a QoS solution for a customer that is connected to an ISP over a 1Gbps link with a 100Mbps CIR. The ISP aggressively drops all traffic received over which is causing numerous TCP retransmissions.
The customer is not using any RTP applications but wants to maximize bandwidth usage up to the CIR. Which QoS solution engineer choose?
  1. Policing
  2. Traffic shaping
  3. Policer with markdown
  4. Queuing
Correct answer: B
Explanation:
https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.htmlTraffic shaping limits the rate of traffic that is sent or received over a network connection by buffering and delaying the flow of data packets. This will help to ensure that the customer is not exceeding the 100Mbps CIR that the ISP has set and also prevent the aggressive dropping of traffic.Traffic shaping will also help to maximize the bandwidth usage while still staying within the limits of the CIR.
https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html
Traffic shaping limits the rate of traffic that is sent or received over a network connection by buffering and delaying the flow of data packets. This will help to ensure that the customer is not exceeding the 100Mbps CIR that the ISP has set and also prevent the aggressive dropping of traffic.Traffic shaping will also help to maximize the bandwidth usage while still staying within the limits of the CIR.
Question 5
An engineer is designing a multicast network for a company specializing in VoD content. Receivers are across the Internet, and for performance reasons, the multicast framework close to the receivers within each AS. For high availability, if the sources in one AS are no longer available, the receivers of that AS must be able to receive the VoD content from sources in another AS. Which feature must the design include?
  1. Bidirectional PIM
  2. SSM
  3. Anycast RP
  4. MSDP
Correct answer: C
Explanation:
https://learningnetwork.cisco.com/s/question/0D53i00000KsrGrCAJ/rendezvous-point-highavailability-mechanisms
https://learningnetwork.cisco.com/s/question/0D53i00000KsrGrCAJ/rendezvous-point-highavailability-mechanisms
Question 6
Refer to the exhibit.
 
 
Which solution decreases the EIGRP convergence time?
  1. Enable subsecond timers
  2. Increase the hold time value
  3. Increase the dead timer value
  4. Enable stub routing on the spokes
Correct answer: D
Question 7
A router running ISIS is showing high CPU and bandwidth utilization. An engineer discovers that the router is configured as L1/L2 and has L1 and L2 neighbors. Which step optimizes the design to address the issue?
  1. Make this router a DIS for each of the interfaces
  2. Disable the default behavior of advertising the default route on the L1/L2 router
  3. Configure the router to be either L1 or L2
  4. Configure each interface as either L1 or L2 circuit type
Correct answer: D
Question 8
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?
  1. IPsec
  2. GRE
  3. PPTP
  4. GRE over IPsec
Correct answer: D
Question 9
Refer to the exhibit.
 
 
An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?
  1. Add a link between access switch A and access switch B
  2. Reconfigure the distribution switch A to become the HSRP Active
  3. Change the link between distribution switch A and distribution switch B to be a routed link
  4. Create an EtherChannel link between distribution switch A and distribution switch B
Correct answer: B
Question 10
When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?
  1. GLBP
  2. IRDP
  3. VRRP
  4. HSRP
Correct answer: A
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