Latest [Mar 04, 2025] 100% Passing Guarantee - Brilliant 300-420 Exam Questions PDF
300-420 Certification – Valid Exam Dumps Questions Study Guide! (Updated 377 Questions)
To prepare for the Cisco 300-420 exam, candidates are expected to have a strong understanding of the Cisco IOS software, network design principles, and network protocols. They should also possess knowledge of the latest trends and technologies in the networking industry. It is recommended that candidates have at least five years of experience working with Cisco technologies.
NEW QUESTION # 63
Drag and drop the characteristics from the left onto the YANG modules they describe on the right. Not all options are used.
Answer:
Explanation:
NEW QUESTION # 64
How do IETF, OpenConfig, and Cisco native YANG models differ when used to configure the same feature on an infrastructure device?
- A. Cisco native models are less comprehensive than QpenConfig.
- B. OpenConfig models are more comprehensive than IETF.
- C. Cisco native models are less comprehensive than IETF.
- D. IETF models are more comprehensive than OpenConfig.
Answer: B
NEW QUESTION # 65
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 NHRP.
- B. Verify ISAKMP.
- C. Verify the GRE tunnels.
- D. Verify crypto maps.
Answer: C
NEW QUESTION # 66
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)
- A. allow-as-in
- B. as-override
- C. client-to-client reflection
- D. bestpath as-path ignore
- E. advertise-best-external
Answer: A,B
NEW QUESTION # 67
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Increase the hold time value
- C. Enable stub routing on the spokes
- D. Increase the dead timer value
Answer: C
NEW QUESTION # 68
Refer to the exhibit.
C0FD9 F48C9ACDC725EA850EC2476EE1E
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. Place the link into area 2 and install a new link between R1 and R2 in area 0.
- C. Lower the Administrative Distance for OSPF area 0.
- D. Configure the link to provide multiarea adjacency.
Answer: A
NEW QUESTION # 69
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Answer:
Explanation:
NEW QUESTION # 70 
Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
- A. use HSRP
- B. use multiple unequal-cost links
- C. use RPVSTP+
- D. use multiple equal-cost links
- E. use an IGP
Answer: D,E
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION # 71
Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.
Answer:
Explanation:
NEW QUESTION # 72
How many host addresses are available with a Class B network with the default mask?
- A. 65,534
- B. 63,998
- C. 65,536
- D. 64,QQQ
Answer: A
NEW QUESTION # 73
An engineer is looking for a standards-driven YANG model to manage a multivendor network environment. Which model must the engineer choose?
- A. IEEE NETCONF
- B. OpenConfig
- C. Native
- D. IETF
Answer: D
NEW QUESTION # 74
Exhibit:
- A. Make R11 an L2 router.
- B. Make Area 0 L2-only.
- C. Make R31 an L1 router.
- D. Make R3 an L1L2 router.
Answer: D
Explanation:
ENSLD 300-420 cert guide page 117. When creating a backbone there should never be L1 routers between (L2 only, or) L1/L2 routers.
NEW QUESTION # 75
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?
- A. No-advertise
- B. Next-hop
- C. Maximum-prefix
Answer: C
NEW QUESTION # 76
Refer to the exhibit.
An architect must design an IGP solution for an enterprise customer. The design must support:
Physical link flaps should have minimal impact.
Access routers should converge quickly after a link failure.
Which two ISIS solutions should the architect include in the design? (Choose two.)
- A. Advertise the IS-IS interface and loopback IP address toward the Internet and data center.
- B. Reduce SPF and PRC intervals to improve convergence time.
- C. Configure all access and aggregate routers to establish Level 1 / Level 2 adjacencies across the network.
- D. Configure access routers to establish a Level 1 adjacency and aggregate routers to establish a Level 1 /
- E. Use BGP to IS-IS redistribution to advertise all Internet routes in the Level 1 area.
Answer: B,C
Explanation:
Level 2 adjacency.
NEW QUESTION # 77
Which two routing protocols allow for unequal cost load balancing? (Choose two.)
- A. RIPng
- B. IS-IS
- C. BGP
- D. EIGRP
- E. OSPF
Answer: C,D
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION # 78
An engineer must design an addressing plan for a small business using a single /24 network. Each department must have its own subnet. Drag and drop the subnets from the left onto the departments requirements that they fulfill on the right. Not all options are used.
Answer:
Explanation:
NEW QUESTION # 79
When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?
- A. IPsec forwarding using tunnel mode
- B. IPsec forwarding using transport mode
- C. additional bandwidth for headend
- D. encapsulation of traffic with GRE or VTI
Answer: D
NEW QUESTION # 80
Which two activities should occur during an SE's discovery process? (Choose two.)
- A. Referencing the PPDIOO model to effectively facilitate the discussion
- B. Establishing credibility with the customer
- C. Working with the customer to develop a reference architecture
- D. Mapping Cisco innovation to customer s needs
- E. Gathering information about the current state of the customer s network environment
Answer: B,E
NEW QUESTION # 81
Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?
- A. Configure route filter on the router in area 4.
- B. Configure route leaking on the router in area 1.
- C. Configure the high metric on the router in area 4.
- D. Configure route leaking on the router in area 2.
Answer: C
NEW QUESTION # 82
See the solution below
Explanation/Reference:
There are two ways to configure interVLAN routing in this case:
+ Use RouterC as a "router on a stick" and SwitchC as a pure Layer2 switch. Trunking must be established between RouterC and SwitchC.
+ Only use SwitchC for interVLAN routing without using RouterC, SwitchC should be configured as a Layer 3 switch (which supports ip routing function as a router). No trunking requires.
The question clearly states "No trunking has been configured on RouterC" so RouterC does not contribute to interVLAN routing of hosts H1 & H2 -> SwitchC must be configured as a Layer 3 switch with SVIs for interVLAN routing.
We should check the default gateways on H1 & H2. Click on H1 and H2 and type the "ipconfig" command to get their default gateways.
Answer:
Explanation:
\>ipconfig
We will get the default gateways as follows:
Host1:
+ Default gateway: 190.200.250.33
Host2:
+ Default gateway: 190.200.250.65
Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10, gi0/11 interfaces were configured as access ports so we don't need to configure them in this sim.
SwitchC# configure terminal
SwitchC(config)# int gi0/1
SwitchC(config-if)#no switchport -> without using this command, the simulator does not let you assign IP address on Gi0/1 interface.
SwitchC(config-if)# ip address 10.10.10.2 255.255.255.0 ->RouterC has used IP 10.10.10.1 so this is the lowest usable IP address.
SwitchC(config-if)# no shutdown
SwitchC(config-if)# exit
SwitchC(config)# int vlan 2
SwitchC(config-if)# ip address 190.200.250.33 255.255.255.224
SwitchC(config-if)# no shutdown
SwitchC(config-if)# int vlan 3
SwitchC(config-if)# ip address 190.200.250.65 255.255.255.224
SwitchC(config-if)# no shutdown
SwitchC(config-if)#exit
SwitchC(config)# ip routing (Notice: MLS will not work without this command) SwitchC(config)# router eigrp 65010 SwitchC(config-router)# network 10.10.10.0 0.0.0.255 SwitchC(config-router)# network 190.200.250.32 0.0.0.31 SwitchC(config-router)# network 190.200.250.64 0.0.0.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED, so you will not miss within it in the exam, also don't modify/delete any port just do the above configuration. Also some reports said the "no auto-summary" command can't be used in the simulator, in fact it is not necessary because the network 190.200.0.0/16 is not used anywhere else in this topology.
In order to complete the lab, you should expect the ping to SERVER to succeed from the MLS, and from the PCs as well.
Also make sure you use the correct EIGRP AS number (in the configuration above it is 650 but it will change when you take the exam) but we are not allowed to access RouterC so the only way to find out the EIGRP AS is to look at the exhibit above. If you use wrong AS number, no neighbor relationship is formed between RouterC and SwitchC.
In fact, we are pretty sure instead of using two commands "network 190.200.250.32 0.0.0.31″ and "network
190.200.250.64 0.0.0.31″ we can use one simple command "network 190.200.0.0″ because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised; even without "no auto- summary" command the network still works correctly. But in the exam the sim is just a flash based simulator so we should use two above commands, just for sure. But after finishing the configuration, we can use "show run" command to verify, only the summarized network 190.200.0.0 is shown.
NEW QUESTION # 83
An engineer must peer with an ISP for internet connectivity using BGP, initially, the engineer wants to receive only specific prefixes from the ISP and a default route. However, the solution must provide the flexibility to add prefixes in the future at short notice. The ISP has a two-week change process in place. Which route filtering solution must the engineer employ?
- A. Request a full internet routing table and a default route from the ISP and configure inbound route filtering with a prefix list that permits the default route and required prefixes
- B. Configure outbound route filtering on the enterprise and ISP so that the enterprise tell the ISP which prefixes are required
- C. Request only the required prefixes and default route be advertised from the ISO with whitelisted networks
- D. Request a limited internet routing table and a default route from the ISP and configure the BGP max-limit to 1 with an access list that permits only the specific internet prefixes and blocked networks
Answer: A
Explanation:
anychange on the prefix list, engineer only need to update the preifx list and restart the BGP peer to the ISP. soft-reconfiguration inbound could be used to reduce down time of reset BGP peer, but it require lots of memory and in this case, connection to ISP and tons of route learnt will not be apporitated.
NEW QUESTION # 84 
Refer to the exhibit. Where must an architect plan for route summarization for the topology?
- A. from the core toward the aggregation and the aggregation toward the core
- B. from the aggregation toward the access and the access toward the aggregation
- C. from the core toward the aggregation and the access toward the aggregation
- D. from the aggregation toward the core and the aggregation toward the access
Answer: D
NEW QUESTION # 85
Which element of the Cisco SD-WAN architecture facilitates the functions of controller discovery and NAT traversal?
- A. vManage
- B. vEdge
- C. vBond orchestrator
- D. vSmart controller
Answer: C
NEW QUESTION # 86
In a simple MPLS L3VPN, which two tasks are performed by the PE router? (Choose two.)
- A. It exchanges VPNv4 and VPNv6 routes with CE Devices.
- B. It establishes pseudo wires with other PEs.
- C. It exchanges VPNv4 or VPNv6 route with other PE routers.
- D. It assigns labels to routes in individual VPNs.
- E. It forwards labeled packets to CE devices.
Answer: C,D
NEW QUESTION # 87
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