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Cisco 300-420 Online Exam Practice Questions
QUESTION 1
Which method will filter routes between EIGRP neighbors within the same autonomous system?
A. distribute-list
B. policy-based routing
C. leak-map
D. route tagging
Correct Answer: A
QUESTION 2
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
Correct Answer: B
QUESTION 3
What is the benefit of using VRRPv3 as compared to VRRPv2?
A. VRRPv3 supports IPv4 and IPv6
B. VRRPv3 supports authentication
C. VRRPv3 supports preemption
D. VRRPv3 supports stateful switchover
Correct Answer: A
QUESTION 4
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 creating a branch office as a temporary measure. The new branch office is assigned to 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
Correct Answer: B
QUESTION 5
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
Correct Answer: C
QUESTION 6
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
Correct Answer: D
QUESTION 7
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
Correct Answer: B
QUESTION 8
DRAG DROP
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Select and Place:
Correct Answer:
In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed. The dial-in mode is
supported over gRPC in only 64-bit platforms
In a dial-out mode, the router initiates a session to the destinations based on the subscription. All 64-bit IOS XR
platforms (except for NCS 6000 series routers) support gRPC and TCP protocols. All 32-bit IOS XR platforms support
only TCP.
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/asr9000/telemetry/b-telemetry-cg-asr9000-61x/b-telemetry-cgasr9000-61x_chapter_010.html#id_36445
QUESTION 9
An engineer must design a VPN solution for a company that has multiple branches connecting to the main office. What
are the two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)
A. support for AES 256-bit encryption
B. greater scalability
C. support for anycast gateway
D. lower-traffic overhead
E. dynamic spoke-to-spoke tunnels
Correct Answer: BE
QUESTION 10
Which two routing protocols allow for unequal cost load balancing? (Choose two.)
A. EIGRP
B. IS-IS
C. BGP
D. OSPF
E. RIPng
Correct Answer: AC
QUESTION 11
Which design consideration must be made when using IPv6 overlay tunnels?
A. Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.
B. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
C. Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.
D. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.
Correct Answer: C
QUESTION 12
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast
sources and receivers? (Choose two.)
A. IGMPv2
B. BIDIR-PIM
C. MP-BGP
D. MSDP
E. MLD
Correct Answer: DE
QUESTION 13
How do endpoints inside an SD-Access network reach resources outside the fabric?
A. a VRF fusion router is used to map resources in one VN to another VN
B. Fabric borders use VRFs to map VNs to VRFs
C. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
D. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network
Correct Answer: A
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