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Exam Dumps 300-420 Pdf | 300-420 Exam Course

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Cisco 300-420 Exam Certification Details:

Number of Questions
55-65

Exam Code
300-420 ENSLD

Exam Registration
PEARSON VUE

Sample Questions
Cisco 300-420 Sample Questions

Passing Score
Variable (750-850 / 1000 Approx.)

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q65-Q70):

NEW QUESTION # 65
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?

A. Migrate to a Layer 3 access campus design if the APs can run on separate VLANs.
B. Align HSRP primary and STP root bridges if the APs cannot run on separate VLANs.
C. Align HSRP primary and STP root bridges and reduce ARP timers to match CAM timers on the aggregation layer switches.
D. Migrate all APs to a common Layer 2 access layer switch and run Layer 3 from the aggregation layer to all remaining access layer switches.

Answer: C

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 # 66
Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.
B. SGTs can be used to permit traffic from one VN to another.
C. GRE tunneling can be configured between fabric edges to connect one VN to another.
D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

Answer: C

Explanation:
Section: WAN for Enterprise Networks

NEW QUESTION # 67
A company has many spoke sites with two data centers. The company wants to exchange the routing information between the data centers and the spoke sites using EIGRP. All locations belong to a single AS, and auto-summarization is disabled. Which two actions must the company choose? (Choose two.)

A. Exchange all routes between locations.
B. Split the network into two separate ASs.
C. Summarize the routes from spokes to the hubs.
D. Make each spoke site router a stub router.
E. Summarize the routes between the hubs.

Answer: A,C

NEW QUESTION # 68
Which two overlay network design considerations must be made for a Cisco SD-Access network? (Choose two.)

A. Layer 3 to the access design
B. Avoid overlapping IP subnets
C. Reduce subnets and simplify DHCP management
D. LAN automation for deployment
E. Dedicated IGP process for the fabric

Answer: B,C

Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.
html#Overlay_Network_Design

NEW QUESTION # 69
An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area.
Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?

A. totally not so stubby
B. not so stubby
C. totally stubby area
D. stubby area

Answer: C

NEW QUESTION # 70
......

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