Cisco 300-415 Online Practice Questions and Exam Preparation

Cisco 300-415 Online Questions & Answers

• Question 561:

  Refer to the exhibit.

  

  An enterprise decides to use the Cisco SD-WAN Cloud onRamp for SaaS feature and utilize HQ site Biz iNET to reach SaaS Cloud for branch C, currently reaching SaaS Cloud directly.

  Which role must be assigned to devices at both sites in vManage Cloud Express for this solution to work?

  A. Branch to be added as Client Sites and H Q as DIA.
  B. H Q to be added as Gateway and Branch as DIA.
  C. Branch to be added as DIA and H Q as Client Site.
  D. H Q to be added as Gateway and Branch as Client Site.
  D. H Q to be added as Gateway and Branch as Client Site.

  ---

  Explanation

  https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/cloudonramp/ios-xe-17/cloud-onramp-book-xe/cor-saas.html

• Question 562:

  A network engineer sets tags in OMP for routes that were originated in the Service VPN.

  Which monitoring tab must be used to verify tags on the next hop?

  A. Troubleshooting > Simulate Flows
  B. Realtime > OMP Received TLOCs
  C. Troubleshooting > Tunnel Health
  D. Realtime > OMP Received Routes
  D. Realtime > OMP Received Routes

• Question 563:

  Which policy is configured to ensure that a voice packet is always sent on the link with less than a 50 msec delay?

  A. localized data policy
  B. localized control policy
  C. centralized data policy
  D. centralized control policy
  C. centralized data policy

• Question 564:

  Which compression algorithm does DRE use in a Cisco SD-WAN environment?

  A. Lempel-Ziv-Welch encoding
  B. Huffman encoding
  C. run-length encoding
  D. Ziv Huffman encoding
  A. Lempel-Ziv-Welch encoding

  ---

  Explanation

  DRE Compression: DRE uses the Lempel-Ziv-Welch (LZW) compression algorithm for compressing data. DRE operates on large streams of data, typically tens to hundreds of bytes or more, and maintains a much larger compression history.

• Question 565:

  The engineer is configuring the vSmart controller to transmit the initial set of non-best routes to the vEdge routers.

  Which configuration command is required under the Overlay Management Protocol to satisfy the requirements?

  A. send-backup-paths
  B. send-path-limit 10
  C. controller-send-path-limit 10
  D. send backup paths
  A. send-backup-paths

• Question 566:

  An engineer wants to automate the onboarding process for a WAN Edge router with vManage.

  Which command will accomplish this?

  A. request vedge-cloud activate chassis-number <chassis-number> serial <serial>
  B. request vedge-cloud activate chassis-number <chassis-number> token <token-number>
  C. request vedge-cloud activate serial <serial> token <token-number>
  D. request vedge-cloud activate chassis-number <chassis-number> organization <organization>
  B. request vedge-cloud activate chassis-number <chassis-number> token <token-number>

  ---

  Explanation

  request vedge-cloud activate

  Activate a vEdge Cloud router in the overlay network (on vEdge Cloud routers only). Before you can use this command, you must configure the organization name and the vBond orchestrator's IP address or DNS name on the vEdge Cloud router.

  Command Hierarchy request vedge-cloud activate chassis-number number token token

• Question 567:

  Which control policy assigned to Drenches in the out direction establishes a strict hub-and-spoke topology tor VPN2?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

  ---

  Explanation

  To establish a strict hub-and-spoke topology in Cisco SD-WAN for a specific VPN, such as VPN2, a control policy must be configured. This control policy dictates how traffic flows between sites, ensuring that all branch traffic is routed through the hub site.

  Control Policy Components:

  Site Lists: Define which sites are considered hubs and which are branches.

  VPN Lists: Identify the VPNs to which the policy applies.

  Control Policy: Use sequences to match routes and specify actions to accept or reject traffic based on the defined topology.

  Policy Analysis:

  Correctly defines site lists for hub sites (site-id 1-2) and creates a control policy that matches routes for VPN2, accepting routes from hub sites and rejecting routes from others. This ensures that traffic from branches (other sites) is only accepted if it routes through the hubs.

  Other options either incorrectly define the site lists or do not properly match and set the routes to enforce the strict hub-and-spoke topology.

  Policy Configuration:

  policy

  lists

  vpn-list VPN2

  vpn 2

  site-list hub_sites

  site-id 1-2

  !

  control-policy vpn_multi_topology sequence 10

  match route

  site-list hub_sites

  vpn-list VPN2

  !

  action accept

  !

  sequence 20

  match route

  vpn-list VPN2

  !

  action reject

  !

  default-action accept

  Cisco SD-WAN Control Policy Configuration Guide

  Cisco SD-WAN Hub-and-Spoke Topology Deployment Guide

• Question 568:

  How should an engineer optimize multicast packet distribution throughout the overlay network in SD-WAN?

  A. Eliminate packet replication on the WAN Edge router that is connected to multicast source.
  B. Build a shared tree such that a WAN Edge router learns the IP address for the multicast source.
  C. Build a shared tree such that a last-hop router learns the IP address for the multicast source.
  D. Eliminate packet replication on the ingress router that is connected to multicast source.
  D. Eliminate packet replication on the ingress router that is connected to multicast source.

• Question 569:

  Which policy blocks TLOCs from remotes and allows TLOCs from the data center to form hub-and-spoke peering?

  A. localized control policy
  B. localized data policy
  C. centralized data policy
  D. centralized control policy
  C. centralized data policy

  ---

  Explanation

  Centralized control policy applies to the network-wide routing of traffic by affecting the information that is stored in the vSmart controller's route table and that is advertised to the vEdge routers. The effects of centralized control policy are seen in how vEdge routers direct the overlay network's data traffic to its destination. The centralized control policy configuration itself remains on the vSmart controller and is never pushed to local routers.

  Centralized data policy applies to the flow of data traffic throughout the VPNs in the overlay network. These policies can permit and restrict access based either on a 6-tuple match (source and destination IP addresses and ports, DSCP fields, and protocol) or on VPN membership. These policies are pushed to the affected vEdge routers.