Cisco 300-420 Online Practice Questions and Exam Preparation

Cisco 300-420 Online Questions & Answers

• Question 251:

  What is the purpose of the RPF check in multicast routing?

  A. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic back to the source address
  B. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic to the destination address
  C. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic to the destination address
  D. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic back to the source address
  E. to ensure that multicast packets, no matter the interface they arrived on, are forwarded out all interfaces
  A. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic back to the source address

• Question 252:

  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 resource utilization, while still allowing for full connectivity to the rest of the network?

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

• Question 253:

  Which component of Cisco SD-Access integrates with Cisco DNA Center to perform policy segmentation and enforcement through the use of security group access control lists and security group tags?

  A. Cisco Application Policy Infrastructure Controller Enterprise Module
  B. Cisco Network Data Platform
  C. Cisco Identity Services Engine
  D. Cisco TrustSec
  C. Cisco Identity Services Engine

• Question 254:

  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.
  A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.

• Question 255:

  DRAG DROP

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

  Select and Place:

  

  

• Question 256:

  When is it advisable to provide dedicated control plane nodes within a Cisco SD-Access design?

  A. in a small deployment where border nodes are not required
  B. when there is a requirement for frequent roaming of endpoints across fabric edge nodes
  C. in designs without Cisco DNA Center
  D. in a design where fabric edge nodes are unable to provide control plane functionality
  D. in a design where fabric edge nodes are unable to provide control plane functionality

• Question 257:

  Which design consideration should be observed when EIGRP is configured on Data Center switches?

  A. Perform manual summarization on all Layer 3 interfaces to minimize the size of the routing table.
  B. Prevent unnecessary EIGRP neighborships from forming across switch virtual interfaces.
  C. Lower EIGRP hello and hold timers to their minimum settings to ensure rapid route reconvergence.
  D. Configure multiple EIGRP autonomous systems to segment Data Center services and applications.
  A. Perform manual summarization on all Layer 3 interfaces to minimize the size of the routing table.

• Question 258:

  Refer to the exhibit.

  

  A customer is planning to onboard three new VPN partner connections in the data center. The new subnets must not overlap with the existing data center network, and the subnet size must not be bigger than necessary. The customer dedicated 10.1.8.0/21 for this design.

  How must the subnets be divided to meet these requirements?

  A. Partner-A: 10.1.11.0/25 Partner-B: 10.1.12.0/22 Partner-C: 10.1.11.128/27
  B. Partner-A: 10.1.12.0/25 Partner-B: 10.1.13.0/22 Partner-C: 10.1.12.128/26
  C. Partner-A: 10.1.11.0/25 Partner-B: 10.1.13.0/23 Partner-C: 10.1.11.128/27
  D. Partner-A: 10.1.11.0/24 Partner-B: 10.1.13.0/23 Partner-C: 10.1.12.128/26
  A. Partner-A: 10.1.11.0/25 Partner-B: 10.1.12.0/22 Partner-C: 10.1.11.128/27

• Question 259:

  DRAG DROP

  Drag and drop the description from the left onto the corresponding WAN connectivity types and categories on the right.

  Select and Place:

  

  

• Question 260:

  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
  C. ZTP or manual configuration