Prep4King 300-420 Real Exam Question Answers Updated [Dec 29, 2024]
Easily To Pass New Cisco 300-420 Dumps with 348 Questions
Automation
This section makes up 10% of the whole content and requires that the students possess an understanding of the following processes:
- Comparing the dial-in and dial-out techniques to model-driven telemetry.
- Explaining the influence of model-driven telemetry on networks such as periodic publication and on-change publication;
- Selecting the appropriate YANG data model set to meet the requirements;
- Distinguishing between NETCONF & RESTCONF;
NEW QUESTION # 162
A company plans to transition to IPv6. They will link their IPv4 addresses to the lowest significant bits of the new Ipv6 addresses. A network administrator with an employee id: 4264:42:116 is preparing a mapping schema for the new IPv6 addresses. Which address does the 172.16.10.0/24 network translate to?
- A. 2001:db8:ac10:0a00::/64
- B. 2001:db8:abcd:172:16:10::/96
- C. 2001:db8:abcd::ac10:a00/120
- D. 2001:db8:abcd:11d8:a00/120
Answer: B
NEW QUESTION # 163
Drag and Drop Question
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 # 164
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 # 165
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. LLQ
- B. IntServ
- C. WRED
- D. DiffServ
Answer: B
NEW QUESTION # 166
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 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
- B. 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
- C. Request only the required prefixes and default route be advertised from the ISO with whitelisted networks
- D. Configure outbound route filtering on the enterprise and ISP so that the enterprise tell the ISP which prefixes are required
Answer: B
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 # 167
Which PIM mode uses a shared tree only?
- A. source-specific
- B. sparse
- C. bidirectional
- D. dense
Answer: B
Explanation:
Explanation
The PIM mode that uses a shared tree only is the sparse mode. In sparse mode, PIM routers build a shared tree for multicast traffic, which is shared among all of the routers in the multicast domain. The shared tree is built from the source routers to the rendezvous point (RP) and then from the RP to the receivers. The advantage of sparse mode is that it requires less state information on the routers.
NEW QUESTION # 168
An engineer is designing a BGP solution supporting a VXLAN environment over a Layer 3 IPv4 network fabric with these requirements:
- provide Layer 2 adjacency
- allow VM migration of workloads between sites
- IGP is OSPF
Which BGP address family must the engineer choose?
- A. L2VPN EVPN
- B. IPv4 unicast
- C. L2VPN VPLS-VPWS
- D. VPNv4
Answer: A
NEW QUESTION # 169
Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)
- A. utilizing forward error correction
- B. implementing Cisco Umbrella
- C. implementing AMP
- D. utilizing quality of service
- E. implementing a stateful application firewall
Answer: A,D
NEW QUESTION # 170
Refer to the exhibit.
EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?
- A. R1 forwards the traffic to R3 in order to reach R2
- B. R1 has no route to R2 and drops the traffic
- C. R1 forwards the traffic to R3, but R3 drops the traffic
- D. R1 load-balances across the paths through R3 and R4 to reach R2
Answer: A
NEW QUESTION # 171
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?
- A. Traffic shaping
- B. Policer with markdown
- C. Policing
- D. Queuing
Answer: A
Explanation:
https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645- policevsshape.html
NEW QUESTION # 172
Refer to the exhibit.
An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?
- A. IP directed-broadcasts on R2
- B. spanning-tree uplinkfast on SW2
- C. IP directed-broadcasts on R1
- D. spanning-tree uplinkfast on SW1
Answer: A
Explanation:
"IP directed broadcast" must be supported on the last router to the destination subnet. Since the sleeping PC's dont have IP adresses, the machines must be calles awake by broadcast that behaves like an unicast untill they reach the destination network. There the directed broadcast is handled like a proper broadcast to wake all WOL machines.
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91672-catl3-wol-vlans.html
NEW QUESTION # 173
You are implementing WAN access for an enterprise network while running applications that require a fully meshed network, which two design standards are appropriate for such an environment? (Choose two)
- A. Multiple MPLS VPN connections with static routing
- B. A centralized DMVPN solution to simplify connectivity for the enterprise
- C. A dedicated WAN distribution layer to consolidate connectivity to remote sites
- D. A collapsed core and distribution layer to minimize costs
- E. Multiple MPLS VPN connections with dynamic routing
Answer: B,C
Explanation:
With DMVPN phase 2 and 3, spokes can speak with each other directly like they are directly connected in a meshed network. This simplifies the connectivity for the enterprise -> Answer A is correct.
Another way to run applications that require a fully meshed network is through a WAN distribution layer that is connected to all remote sites. Therefore these sites can communicate with each other via this WAN distribution layer.
NEW QUESTION # 174
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. Implement hierarchical QoS with a parent policing policy.
- B. Add a bandwidth statement to the router interface.
- C. Implement hierarchical QoS with a parent shaping policy.
- D. Reduce the bandwidth of the connection to the router.
Answer: C
NEW QUESTION # 175
What does a hierarchical EIGRP design help with? (Choose two.)
- A. Redistribution
- B. Route summarization
- C. Load balancing
- D. Faster convergence
Answer: B,D
NEW QUESTION # 176 
Refer to the exhibit. All routers currently reside in OSPF area 0. The network manager recently used R1 and R2 as aggregation routers for remote branch locations and R3 and R4 for aggregation routers for remote office locations. The network has since been suffering from outages, which are causing frequent SPF runs. To enhance stability and introduce areas to the OSPF network with the minimal number of ABRs possible, which two solutions should the network manager recommend? (Choose two.)
- A. a newOSPFarea for R1andR2connections,with R1 and R2as ABRs
- B. a newOSPFarea for R3andR4connections,with R3 and R4as ABRs
- C. a newOSPFarea for R3andR4connections,with R5 and R6as ABRs
- D. a new OSPF area for R1, R2, R3, and R4 connections, with R1, R2, R3, and R4 as ABRs
- E. a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs
Answer: C,E
NEW QUESTION # 177
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. 50 Mbps
- B. 25 Mbps
- C. 33 Mbps
- D. 75 Mbps
Answer: C
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_conmgt/configuration/xe-3s/qos-conmgt-xe-3s-book/qos The sum of all bandwidth allocation on an interface cannot exceed 75 percent of the total available interface bandwidth. The remaining 25 percent is used for other overhead, including Layer 2 overhead, routing traffic, and best-effort traffic. Bandwidth for the CBWFQ class-default class, for instance, is taken from the remaining
25 percent.
NEW QUESTION # 178
A customer reports that each time a networking component fails, OSPF recalculates the backup path, with causes a short outage. Which solution must the customer implement to improve this situation?
- A. Incremental SPF
- B. BFD
- C. LFA FRR
- D. Aggressive OSPF timers
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-sy/iro-15-sy-book/iro-incre-spf
NEW QUESTION # 179
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Career Opportunities for People Who Pass 300-420 Exam and Get Certified
If you are starting the IT career, earning an intermediate-level Cisco certification can provide a plethora of employment opportunities. There are various positions that you can apply for after passing the Cisco 300-420 exam and obtaining the CCNP Enterprise certificate and they are as follows:
- Network Engineer
- System Engineer
- Network Security Engineer
- Network Architect
- Network Administrator
Having this certification under your belt can help you get a much higher salary as well. Depending on what position you land, extra skills, and experience, your compensation can vary. According to PayScale.com, as a network engineer, you can earn around $74k, while the salary for a network architect is around $122k annually. If you start working as a network security engineer you can easily get over $82k per year.
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