Free Cisco 300-420 Study Guides Exam Questions and Answer
300-420 Exam Dumps, 300-420 Practice Test Questions
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NEW QUESTION 51
Which control-plane technology allows the same subnet to exist across multiple network locations?
- A. ISE mobility services
- B. FabricPath
- C. VXLAN
- D. LISP
Answer: D
NEW QUESTION 52
Which design element should an engineer consider when multicast is included in a Cisco SD-Access architecture?
PIM SSM must run in the underlay.
Multicast clients reside in the underlay, and the multicast source is outside the fabric or in the overlay.
- A. Multicast traffic is transported in the overlay and the EID space for wired and wireless clients.
- B. Section: Network Services
- C. Rendezvous points must be used in a PIM SSM deployment.
Answer: A
Explanation:
Explanation
Explanation/Reference:
Reference:
SDA Fabric Multicast.pdf slide 3
NEW QUESTION 53
Drag and drop the description from the left onto the corresponding WAN connectivity types and categories on the right.
Answer:
Explanation:
NEW QUESTION 54
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. Create a tunnel between routers E and F in area 10.
- B. Create an OSPF virtual link between routers E and F.
- C. Make area 10 a not-so-stubby area.
- D. Move the link between routers C and D to area 10.
Answer: D
NEW QUESTION 55
An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider's switch to the customer's router is 1Gbps. Which solution should the engineer include to prevent potential issues with choppy voice traffic?
- A. Implement hierarchical QoS with a parent policing policy.
- B. Add a bandwidth statement to the router interface.
- C. Reduce the bandwidth of the connection to the router.
- D. Implement hierarchical QoS with a parent shaping policy.
Answer: D
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION 56
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION 57
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:
reduce the impact of topology changes
reduce the time spent on network administration
reduce manual configuration errors
Which two solutions should the architect include in the new design? (Choose two.)
- A. Implement MST instead of STP.
- B. Implement Rapid PVST+ instead of STP.
- C. Configure dynamic trunking protocol to propagate VLAN information.
- D. Use VTP to propagate VLAN information and to prune unused VLANs.
- E. Configure broadcast and multicast storm control on all switches.
Answer: B,D
NEW QUESTION 58 
Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:
*conserve bandwidth, memory, and CPU processing
*prevent suboptimal routing
*avoid any unnecessary queries
Which two solutions must the architect select? (Choose two.)
- A. static redistribution
- B. distribute lists
- C. stub routing
- D. prefix lists
- E. route summarization
Answer: B,E
NEW QUESTION 59
Which method will filter routes between EIGRP neighbors within the same autonomous system?
- A. distribute-list
- B. route tagging
- C. leak-map
- D. policy-based routing
Answer: A
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 60
A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?
- A. Local Preference
- B. MED
- C. Weight
- D. AS Path
- E. Community
Answer: C
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 61
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?
- A. PIM-SM
- B. any-source multicast
- C. BIDIR-PIM
- D. PIM-SSM
Answer: C
NEW QUESTION 62
Which PIM mode uses a shared tree only?
- A. bidirectional
- B. dense
- C. sparse
- D. source-specific
Answer: A
Explanation:
In bidirectional mode, traffic is routed only along a bidirectional shared tree that is rooted at the rendezvous point (RP) for the group https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-tech-oview.html#GUID-51D0D6DF-E7F1-4A0E-8E31-D7ED464DF2AC
NEW QUESTION 63
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. Create a tunnel between routers E and F in area 10.
- B. Create an OSPF virtual link between routers E and F.
- C. Make area 10 a not-so-stubby area.
- D. Move the link between routers C and D to area 10.
Answer: D
NEW QUESTION 64
What is the role of a control-plane node in a Cisco SD-Access architecture?
- A. map system that manages External Layer 3 networks
- B. fabric device that connects wired endpoints to the SD-Access fabric
- C. map system that manages endpoint to device relationships
- D. fabric device that connects APs and wireless endpoints to the SD-Access fabric
Answer: C
NEW QUESTION 65
Which PIM mode uses a shared tree only?
- A. bidirectional
- B. dense
- C. sparse
- D. source-specific
Answer: A
Explanation:
Explanation
In bidirectional mode, traffic is routed only along a bidirectional shared tree that is rooted at the rendezvous point (RP) for the group
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-te
NEW QUESTION 66
Which two statements about VRRP advertisements are true? (Choose two.)
- A. They are sent every three seconds by default.
- B. They are sent only from the master router.
- C. They include priority information.
- D. They include VRRP timer information.
- E. They are sent from the master router and standby routers.
Answer: C,E
NEW QUESTION 67
Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets. An architect must create a design that ensures AS64512 become a transit AS. Which filtering solution must the architect choose?
- A. No-advertise
- B. Maximum-prefix
- C. Next-hop
Answer: B
NEW QUESTION 68
An infrastructure team is concerned about the shared memory utilization of a device, and for this reason, they need to monitor the device state. Which solution limits impact on the device and provides the required data?
- A. periodic subscription
- B. IPFIX
- C. on-change subscription
- D. static telemetry
Answer: B
NEW QUESTION 69
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Answer:
Explanation:
NEW QUESTION 70
How do endpoints inside an SD-Access network reach resources outside the fabric?
- A. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network
- B. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
- C. a VRF fusion router is used to map resources in one VN to another VN
- D. Fabric borders use VRFs to map VNs to VRFs
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
"Packets and frames sourced from inside the fabric and destined outside of the fabric are de-encapsulated by the border node"(not the edge node)
NEW QUESTION 71
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Answer:
Explanation:
Explanation
In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed. Dialin 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.
NEW QUESTION 72
Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?
- A. GRE tunneling can be configured between fabric edges to connect one VN to another.
- B. SGTs can be used to permit traffic from one VN to another.
- C. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.
- D. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.
Answer: A
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION 73
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Further CCIE Certification Path
Acquiring the CCNP Enterprise certificate makes one eligible for the expert-level ones such as CCIE Enterprise Wireless and the CCIE Enterprise Infrastructure. The core test 350-401 is also one of the two requirements for these certifications, so the only step remaining is to pass one lab exam for any of the mentioned options. Both of those tests are 8 hours long and mostly assess one's practical competence.
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