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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:
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Cisco 300-420 (Designing Cisco Enterprise Networks) certification exam is a comprehensive exam that tests the knowledge and skills of network design engineers. 300-420 exam is designed to assess the candidate's ability to design, deploy, and optimize enterprise networks. 300-420 Exam is intended for network architects, network designers, and network engineers who have experience with designing and implementing enterprise networks.
NEW QUESTION # 242
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Answer:
Explanation:
NEW QUESTION # 243
What is the purpose of a control plane node in a Cisco SD-Access network fabric?
Answer: B
NEW QUESTION # 244
An existing network solution is using BFD in echo mode. Several of the network devices are experiencing high CPU utilization which an engineer has determined is related to the BFD feature. Which solution should the engineer leverage to reduce the CPU load?
Answer: C
Explanation:
When BFD echo mode contributes to high CPU utilization on lower-resource devices, the practical design response is to use slower BFD timers for those peers rather than continuing to run an overly aggressive failure- detection profile everywhere. Cisco BFD provides fast failure detection, but timer values must match platform capability, interface scale, and the operational value of subsecond detection. Echo mode can generate frequent packets, and in some environments the processing or punt behavior can create measurable CPU pressure.
Slowing the timers reduces packet rate and control-plane stress while keeping BFD available for faster detection than traditional routing protocol dead timers. Moving to asynchronous mode may be appropriate in some designs, but the listed option says "BED" and does not directly address the requirement as cleanly as reducing timer aggressiveness. BFD multihop is used for non-directly connected peers and is not a CPU-relief mechanism. Carrier delay changes interface state notification behavior, but it does not solve BFD packet processing load. Therefore, implement slower timers on peers with limited resources. Reference topics: BFD design, echo mode, failure-detection timers, CPU utilization.
NEW QUESTION # 245
How is sub-second failure of a transport link detected in a Cisco SD-WAN network?
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/Monitor-And- Maintain/monitor-maintain-book/m-network.html BFD Protocol The Role of BFD in Cisco SD-WAN Solution The BFD protocol detects links failures between routers. It measures data loss and latency on the data tunnel to determine the status of the devices at either end of the connection.
For data plane resiliency, the Cisco SD-WAN software implements the BFD protocol, which runs automatically on the secure IPsec and GRE connections between routers. These connections are used for the data plane, and for data traffic, and are independent of the DTLS tunnels used by the control plane.
NEW QUESTION # 246
An engineer is designing a network for a customer running a wireless network with a common VLAN for all APs. The customer is experiencing unicast flooding in the Layer 2 network between the aggregation and access layers. The customer wants to reduce the flooding and improve convergence time. Which solution meets these requirements?
Answer: B
Explanation:
The default ARP table aging time is 4 hours while the CAM holds the entries for only 5 minutes.
The switch sends out a frame to all forwarding ports within the respective VLAN when the destination MAC address is aged out from the CAM table. You need a CAM aging timer greater or equal to the ARP timeout in order to prevent unicast flooding.
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/71079-arp- cam- tableissues.html#:~:text=The%20default%20ARP%20table%20aging%20time%20is%204,ARP%
20timeout%20in%20order%20to%20prevent%20unicast%20flooding.
NEW QUESTION # 247
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