Cisco 300-420 Designing Cisco Enterprise Networks (ENSLD) Online Training
Cisco 300-420 Online Training
The questions for 300-420 were last updated at Oct 23,2025.
- Exam Code: 300-420
- Exam Name: Designing Cisco Enterprise Networks (ENSLD)
- Certification Provider: Cisco
- Latest update: Oct 23,2025
DRAG DROP
Drag and drop the steps WAN Edge performs when on-boarded into the Cisco SD-WAN overlay from the left into the order they are completed on the right.
When vEdge router redundancy is designed, which FHRP is supported?
- A . HSRP
- B . OMP
- C . GLBP
- D . VRRP
A network administrator is troubleshooting a DMVPN setup between the hub and the spoke.
Which action should the administrator take before troubleshooting the IPsec configuration?
- A . Verify the GRE tunnels.
- B . Verify ISAKMP.
- C . Verify NHRP.
- D . Verify crypto maps.
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 . LLQ
- C . WRED
- D . IntServ
Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps.
Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?
- A . 25 Mbps
- B . 50 Mbps
- C . 33 Mbps
- D . 75 Mbps
An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:
How must the solution prioritize the management traffic over the WAN?
- A . Mark the traffic with DSCP CS1 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to CIass3.
- B . Mark the traffic with DSCP CS6 and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2
- C . Mark the traffic with DSCP EF and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
- D . Mark the traffic with DSCP CS2 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3
Refer to the exhibit.
An architect must design a solution to connect bank site A with bank site B and support:
✑ network operation center monitoring end-to-end L3VPN and L2VPN traffic
✑ company adding thousands of routes in the next two years
Which two BGP solutions must the design include? (Choose two.)
- A . Establish full mesh IBGP peering with ail routers in different IGP domains.
- B . Redistribute different IGP domain routes in a BGP IPv4 routing instance.
- C . Transport site routes using a BGP VPNv4 address family on the PE routers.
- D . Apply BGP policies on all routers to filter out ABR and PE loopback IP addresses.
- E . Connect multiple IGP’LDP domains using a BGP IPv4 unicast family on the ABR.
Which type of rendezvous point deployment is standards-based and support dynamic RP discovery?
- A . Auto-RP
- B . Anycast-RP
- C . bootstrap router
- D . static RP
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
Refer to the exhibit.
A customer is running HSRP on the core routers. Over time the company has grown and requires more
network capacity. In the current environment, some of the downstream interfaces are almost fully utilized, but others are not.
Which solution improves the situation?
- A . Make router R2 active for half of the VLANs.
- B . Add more interfaces to R1 and R2.
- C . Configure port channel toward downstream switches.
- D . Enable RSTP on the downstream switches.
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