Cisco 300-420 Free Practice Questions

NEW QUESTION 1
Which two statements describe source trees in a multicast environment? (Choose two.)

• A. Source trees guarantee the minimum amount of network latency for forwarding multicast traffic
• B. Source trees create an optimal path between the source and the receivers
• C. Source trees use a single common root placed at some chosen point in the network
• D. Source trees can introduce latency in packet delivery
• E. Source trees can create suboptimal paths between the source and the receivers

Answer: AB

NEW QUESTION 2
When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)

• A. nonbroadcast multiaccess
• B. multiaccess
• C. point-to-multipoint
• D. nonbroadcast
• E. point-to-point

Answer: BE

NEW QUESTION 3
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

Answer: C

NEW QUESTION 4
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

Answer: BC

NEW QUESTION 5
Which two routing protocols allow for unequal cost load balancing? (Choose two.)

• A. EIGRP
• B. IS-IS
• C. BGP
• D. OSPF
• E. RIPng

Answer: AC

NEW QUESTION 6
Refer to the exhibit.

An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?

• A. Add a link between access switch A and access switch B
• B. Reconfigure the distribution switch A to become the HSRP Active
• C. Change the link between distribution switch A and distribution switch B to be a routed link
• D. Create an EtherChannel link between distribution switch A and distribution switch B

Answer: B

NEW QUESTION 7
What is an advantage of designing an out-of-band network management solution?

• A. In the event of a production network outage, network devices can still be managed.
• B. There is no separation between the production network and the management network.
• C. In the event of a production network outage, it can be used as a backup network path.
• D. It is less expensive than an in-band management solution

Answer: A

NEW QUESTION 8
An engineer is looking for a standards-driven YANG model to manage a multivendor network environment. Which model must the engineer choose?

• A. Native
• B. OpenConfig
• C. IETF
• D. IEEE NETCONF

Answer: C

NEW QUESTION 9
Which design consideration must be made when dual vEdge 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 vEdge over the other.
• C. Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly.
• D. Configure BFD between vEdge routers to detect sub-second link failures.

Answer: A

NEW QUESTION 10
Which QoS feature responds to network congestion by dropping lower priority packets?

• A. CBWFQ
• B. tail drop
• C. WRED
• D. strict priority

Answer: C

NEW QUESTION 11
Which feature is required for graceful restart to recover from a processor failure?

• A. Cisco Express Forwarding
• B. Virtual Switch System
• C. Stateful Switchover
• D. Bidirectional Forwarding Detection

Answer: A

NEW QUESTION 12
A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

• A. Use EIGRP to establish a neighbor relationship with the main office via L3VPN MPLS and the IPSECVPN tunnel.
• B. Use BGP with the multipath feature enabled to force traffic via the primary path when available.
• C. Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.
• D. Use OSPF with a passive-interface command on the backup connection.

Answer: C

NEW QUESTION 13
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

Answer: B

NEW QUESTION 14
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)

• A. advertise-best-external
• B. bestpath as-path ignore
• C. client-to-client reflection
• D. as-override
• E. allow-as-in

Answer: DE

NEW QUESTION 15
Refer to the exhibit.

Which solution decreases the EIGRP convergence time?

• A. Enable subsecond timers
• B. Increase the hold time value
• C. Increase the dead timer value
• D. Enable stub routing on the spokes

Answer: D

NEW QUESTION 16
What are two benefits of designing an SD-WAN network fabric with direct Internet access implemented at every site? (Choose two.)

• A. It decreases latency to applications hosted by public cloud service provider.
• B. It decreases latency on Internet circuits.
• C. It increases the speed of delivery of site deployments through zero-touch provisioning.
• D. It increases the total available bandwidth on Internet circuits.
• E. It alleviates network traffic on MPLS circuits.

Answer: AE

NEW QUESTION 17
An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?

• A. Native
• B. IEEE
• C. OpenConfig
• D. IETF

Answer: D

NEW QUESTION 18
An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?

• A. Native
• B. IEEE
• C. OpenConfig
• D. IETF

Answer: D

NEW QUESTION 19
Which function are fabric intermediate nodes responsible for in an SD-Access Architecture?

• A. mapping EIDs to RLOCs
• B. encapsulating user traffic in a VXLAN header including the SGT
• C. registering new endpoints in the HTDB
• D. transporting IP packets between edge nodes and border nodes

Answer: D

NEW QUESTION 20
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

Answer: A

NEW QUESTION 21
When vEdge router redundancy is designed, which FHRP is supported?

• A. HSRP
• B. OMP
• C. GLBP
• D. VRRP

Answer: D

NEW QUESTION 22
Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM
domain?

• A. Embedded RP
• B. BSR
• C. Auto-RP
• D. Static RP

Answer: B

NEW QUESTION 23
An enterprise customer has these requirements:
end-to-end QoS for the business-critical applications and VoIP services based on CoS marking.
flexibility to offer services such as IPv6 and multicast without any reliance on the service provider.
support for full-mesh connectivity at Layer 2.
Which WAN connectivity option meets these requirements?

• A. VPWS
• B. MPLS VPN
• C. DMVPN
• D. VPLS

Answer: D

NEW QUESTION 24
A company is running BGP on a single router, which has two connections to the same ISP. Which BGP feature ensures traffic is load balanced across the two links to the ISP?

• A. Multihop
• B. Multipath Load Sharing
• C. Next-Hop Address Tracking
• D. AS-Path Prepending

Answer: B

NEW QUESTION 25
Which control-plane technology allows the same subnet to exist across multiple network locations?

• A. LISP
• B. VXLAN
• C. FabricPath
• D. ISE mobility services

Answer: B

NEW QUESTION 26
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