Cisco 300-420 Dumps Questions Answers

Cisco 300-420 Dumps

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Cisco 300-420 Frequently Asked Questions

Cisco 300-420 Sample Questions

Question # 1

An organization is designing a detailed QoS plan that limits bandwidth to specific rates. Which two parameters are supported be the traffic policing feature? (Choose two.)

A. violating
B. marking
C. shaping
D. bursting 
E. conforming 

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Question # 2

In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

A. DHCP options or manual configuration
B. vManage or DNS records
C. ZTP or manual configuration
D. DNS records or DHCP options 

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Question # 3

A company is using OSPF between its HQ location and a branch office. HQ is assigned area 0 and the branch office is assigned area 1. The company purchases a second branch office, but due to circuit delays to HQ, it decides to connect the new branch office to the creating branch office as a temporary measure. The new branch office is assigned area 2. Which OSPF configuration enables all three locations to exchange routes?

A. The existing branch office must be configured as a stub area
B. A virtual link must be configured between the new branch office and HQ
C. A sham link must be configured between the new branch office and HQ
D. The new branch office must be configured as a stub area 

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Question # 4

Which feature is used to optimize WAN bandwidth of IGMP network traffic among WAN Edge routers in the same VPN?

A. IGMPv2
B. multicast RP
C. multicast-replicator
D. multicast service routes 

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Question # 5

Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

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Question # 6

Refer to the exhibit. An architect must design an IP addressing scheme for a multisite network connected via a WAN transit. The campus site must accommodate 12,000 devices and the branch sites must accommodate 1,000 devices. Which address scheme optimizes network device resources, contains convergence events to the different blocks of the network, and ensures future growth of the network?• Campus: 10.0.0.0/18Branch1: 10.0.192.0/21Branch2: 10.0.200.0/21• Campus: 10.0.0.0/16Branchi: 10.255.0.0/20Branch2: 10.255.16.0/20• Campus: 10.0.0.0/10Branch1: 10.64.0.0/10Branch2: 10.128.0.0/10• Campus: 10.0.0.0/20

A. Branch1: 10.0.64.0/21
B. Branch2: 10.0.128.0/21 

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Question # 7

Refer to the exhibit. Area 10 is a regular OSPF area and networks 10.1.1.0/24 and 172.16.1.0/24 are internal. Which design provides optimal routing between both networks when the link between routers C and E fails?

A. Move the link between routers C and D to area 10.
B. Create an OSPF virtual link between routers E and F.
C. Create a tunnel between routers E and F in area 10.
D. Make area 10 a not-so-stubby area. 

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Question # 8

A network engineer is redesigning a company's QoS solution. The company is currently using IP Precedence, but the engineer plans to move to DiffServ. It is important that the new solution provide backward compatibility with the current solution. Which technology should the design include?

A. expedited forwarding
B. assured forwarding
C. class selector code points
D. default per hop behavior 

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Question # 9

What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)

A. Use structured hierarchical topology with route summarization
B. Used sub-second timers
C. Use the distribute-list command to filter routes 
D. Modify delay parameters on the links
E. Implement multiple EIGRP autonomous systems 

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Question # 10

Refer to the exhibit. An architect reviews the low-level design of a company's enterprise network and advises optimizing the STP convergence time. Which functionality must be to Gi1/0/1-10 to follow the architect's recommendation?

A. PortFast
B. root guard
C. UplinkFast
D. BPDU guard 

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Question # 11

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. GRE tunneling can be configured between fabric edges to connect one VN to another.
C. SGTs can be used to permit traffic from one VN to another.
D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another. 

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Question # 12

An engineer is designing a Layer 3 campus network running EIGRP between the core, aggregation, and access layers. The access layer switches will be connected to the aggregation layer using Layer 3 copper connections. The engineer wants to improve convergence time for access layer switch failures. Which technique must the design include?

A. enabling BFD for EIGRP on the access layer uplinks
B. reducing the EIGRP Hello / Hold timer values
C. EIGRP summarization from core to aggregation layer
D. EIGRP summarization from access to aggregation layer

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Question # 13

An engineer is upgrading a company’s main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system. Which solution should be included in this design?

A. Tag incoming routes from both ISPs with BGP community no-export.
B. Lower the MED for updates sent to the secondary ISP.
C. Use a route-map to prevent all prefixes from being advertised to either ISP.
D. Modify the local-preference for routes incoming from the primary ISP. 

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Question # 14

Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)

A. Use Bidirectional Forwarding Detection
B. Merge all the areas into one backbone area
C. Tune OSPF parameters
D. Make all non-backbone areas stub areas
E. Span the same IP network across multiple areas. 

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Question # 15

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 has no route to R2 and drops the traffic
B. R1 load-balances across the paths through R3 and R4 to reach R2
C. R1 forwards the traffic to R3, but R3 drops the traffic
D. R1 forwards the traffic to R3 in order to reach R2

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Question # 16

Company A recently acquired another company. Users of the newly acquired company must be able to access a server that exists on Company A’s network, both companies use overlapping IP address ranges. Which action conserves IP address space and provides access to the server?

A. Use a single IP address to create overload NAT
B. Use a single IP address to create a static NAT entry
C. Build one-to-one NAT translation for every user that needs access
D. Re-IP overlapping address space in the acquired company 

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Question # 17

Which design consideration must be made when dual WAN Edge routers are deployed at a branch site? 

A. Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.
B. HSRP priorities must match the OMP routing policy to prefer one WAN Edge over the other.
C. Traffic must be symmetrical as it egresses the WAN Edges and returns from remote sites for DPI to function properly.
D. Configure BFD between WAN Edge routers to detect sub-second link failures. 

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Question # 18

A global organization with several branches hired a network architect to design an overlay VPN solution. The branches communicate with each other frequently. The customer expects to add more branches in the future. To meet the customer's security requirements, the architect plans to provide traffic protection using dynamic IPsec tunnels. Which solution should the architect choose?

A. DMVPN
B. EasyVPN
C. GETVPN
D. L2TP

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Question # 19

How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?

A. VLANs are used to segment traffic at Layer 2.
B. 5-tuples and ACLs are used to permit or deny traffic.
C. SGTs and SGTACLs are used to control access to various resources.
D. VRFs are used to segment traffic at Layer 3. 

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Question # 20

Drag and drop the characteristics from the left onto the configuration protocols they describe on the right. 

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