Download Designing and Implementing Cloud Connectivity.300-440.VCEDumps.2024-04-08.17q.vcex

Vendor: Cisco
Exam Code: 300-440
Exam Name: Designing and Implementing Cloud Connectivity
Date: Apr 08, 2024
File Size: 2 MB

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Demo Questions

Question 1
An engineer must configure a CLI add-on feature template in Cisco vManage for enhanced policy-based routing (ePBR) for IPv4. These configurations were deleted:
  • licensing config enable false
  • licensing config privacy hostname true
  • licensing config privacy version false
  • licensing config utility utility-enable true
Drag and drop the steps from the left onto the order on the right to complete the configuration.
Correct answer: To work with this question, an Exam Simulator is required.
Explanation:
CLI Add-On Feature Templates - CiscoCisco Catalyst SD-WAN Systems and Interfaces Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - CLI Add-On Feature TemplatesCisco SD-WAN vSmart CLI Template - NetworkLessons.comCLI Templates for Cisco XE SD-WAN Routers
CLI Add-On Feature Templates - Cisco
Cisco Catalyst SD-WAN Systems and Interfaces Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - CLI Add-On Feature Templates
Cisco SD-WAN vSmart CLI Template - NetworkLessons.com
CLI Templates for Cisco XE SD-WAN Routers
Question 2
An engineer must configure an AppGoE service node for WAN optimization for applications that are hosted in the cloud using Cisco vManage for C8000V or C8500L-8S4X devices. Drag and drop the steps from the left onto the order on the right to complete the configuration.
Correct answer: To work with this question, an Exam Simulator is required.
Explanation:
AppQoE - Step-by-Step Configuration - Cisco CommunityCisco Catalyst SD-WAN AppQoE Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x
AppQoE - Step-by-Step Configuration - Cisco Community
Cisco Catalyst SD-WAN AppQoE Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x
Question 3
Refer to the exhibits.
   
   
Refer to the exhibits. An engineer must redistribute only the 10.0.10.0/24 network into BGP to connect an on-premises network to a public cloud provider. These routes are currently redistributed:
   
Which command is missing on router R2?
  1. neighbor 10.0.10.2 remote-as 100
  2. redistribute ospf 1 match internal
  3. redistribute ospf 1 match external
  4. neighbor 10.0.10.0/24 remote-as 100
Correct answer: C
Explanation:
The commandredistribute ospf 1 match externalis missing on router R2. This command is needed to redistribute only the external OSPF routes into BGP. The external OSPF routes are those that are learned from another routing protocol or redistributed into OSPF. In this case, the 10.0.10.0/24 network is an external OSPF route, as it is redistributed from EIGRP into OSPF on router R1. The other commands are either already present or not relevant for this scenario.Reference:Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 3: Implementing Cloud Connectivity, Lesson 3.1: Implementing IPsec VPN from Cisco IOS XE to AWS, Topic 3.1.2: Configure BGP on the Cisco IOS XE Router Security for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter: Configuring IPsec VPNs with Dynamic Routing Protocols, Section: Configuring BGP over IPsec VPNs
The commandredistribute ospf 1 match externalis missing on router R2. This command is needed to redistribute only the external OSPF routes into BGP. The external OSPF routes are those that are learned from another routing protocol or redistributed into OSPF. In this case, the 10.0.10.0/24 network is an external OSPF route, as it is redistributed from EIGRP into OSPF on router R1. The other commands are either already present or not relevant for this scenario.
Reference:
Designing and Implementing Cloud Connectivity (ENCC) v1.0, Module 3: Implementing Cloud Connectivity, Lesson 3.1: Implementing IPsec VPN from Cisco IOS XE to AWS, Topic 3.1.2: Configure BGP on the Cisco IOS XE Router Security for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter: Configuring IPsec VPNs with Dynamic Routing Protocols, Section: Configuring BGP over IPsec VPNs
Question 4
Refer to the exhibits.
   
   
Refer to the exhibits. An engineer must redistribute OSPF internal routes into BGP to connect an on-premises network to a cloud provider. Which two commands should the engineer run on router R2? (Choose two.)
  1. router bgp 100
  2. redistribute bgp 100
  3. router ospf 1
  4. redistribute ospf 1
  5. redistribute ospf 100
Correct answer: AD
Explanation:
To redistribute OSPF internal routes into BGP for connecting an on-premises network to a cloud provider, the engineer should run the commands ''router bgp 100'' and ''redistribute ospf 1'' on router R2. The command ''router bgp 100'' is used to create a BGP routing process with AS number 100. The command ''redistribute ospf 1'' is used to redistribute OSPF routes from process ID 1 into BGP.Reference: = I need to access the specific content of Designing and Implementing Cloud Connectivity (ENCC) v1.0 from Cisco's official resources to provide exact references. However, I don't have direct access to external databases or resources, including the Cisco ENCC course materials. I recommend referring to the ENCC course materials for the most accurate and detailed information. Please note that this answer is based on general networking principles and may not reflect the specific content of the ENCC course. Always refer to the official course materials for the most accurate information.
To redistribute OSPF internal routes into BGP for connecting an on-premises network to a cloud provider, the engineer should run the commands ''router bgp 100'' and ''redistribute ospf 1'' on router R2. The command ''router bgp 100'' is used to create a BGP routing process with AS number 100. The command ''redistribute ospf 1'' is used to redistribute OSPF routes from process ID 1 into BGP.Reference: = I need to access the specific content of Designing and Implementing Cloud Connectivity (ENCC) v1.0 from Cisco's official resources to provide exact references. However, I don't have direct access to external databases or resources, including the Cisco ENCC course materials. I recommend referring to the ENCC course materials for the most accurate and detailed information. Please note that this answer is based on general networking principles and may not reflect the specific content of the ENCC course. Always refer to the official course materials for the most accurate information.
Question 5
Refer to the exhibits.
   
Refer to the exhibit. An engineer successfully brings up the site-to-site VPN tunnel between the remote office and the AWS virtual private gateway, and the site-to-site routing works correctly. However, the end-to-end ping between the office user PC and the AWS EC2 instance is not working. Which two actions diagnose the loss of connectivity? (Choose two.)
  1. Check the network security group rules on the host VNET.
  2. Check the security group rules for the host VPC.
  3. Check the IPsec SA counters.
  4. On the Cisco VPN router, configure the IPsec SA to allow ping packets.
  5. On the AWS private virtual gateway, configure the IPsec SA to allow ping packets.
Correct answer: BC
Explanation:
The end-to-end ping between the office user PC and the AWS EC2 instance is not working because either the security group rules for the host VPC are blocking the ICMP traffic or the IPsec SA counters are showing errors or drops. To diagnose the loss of connectivity, the engineer should check both the security group rules and the IPsec SA counters. The network security group rules on the host VNET are not relevant because they apply to Azure, not AWS. The IPsec SA configuration on the Cisco VPN router and the AWS private virtual gateway are not likely to be the cause of the problem because the site-to-site VPN tunnel is already up and the site-to-site routing works correctly.Reference:Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5), Module 3: Configuring IPsec VPN from Cisco IOS XE to AWS, Lesson 3: Verify IPsec VPN ConnectivitySecurity for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter: IPsec VPN Overview, Section: IPsec Security AssociationAWS Documentation, User Guide for AWS VPN, Section: Security Groups for Your VPC
The end-to-end ping between the office user PC and the AWS EC2 instance is not working because either the security group rules for the host VPC are blocking the ICMP traffic or the IPsec SA counters are showing errors or drops. To diagnose the loss of connectivity, the engineer should check both the security group rules and the IPsec SA counters. The network security group rules on the host VNET are not relevant because they apply to Azure, not AWS. The IPsec SA configuration on the Cisco VPN router and the AWS private virtual gateway are not likely to be the cause of the problem because the site-to-site VPN tunnel is already up and the site-to-site routing works correctly.
Reference:
Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5), Module 3: Configuring IPsec VPN from Cisco IOS XE to AWS, Lesson 3: Verify IPsec VPN Connectivity
Security for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter: IPsec VPN Overview, Section: IPsec Security Association
AWS Documentation, User Guide for AWS VPN, Section: Security Groups for Your VPC
Question 6
Refer to the exhibit.
   
A company uses Cisco SD-WAN in the data center. All devices have the default configuration. An engineer attempts to add a new centralized control policy in Cisco vManage but receives an error message. What is the problem?
  1. A centralized control policy is already applied to the specific site ID and direction
  2. The policy for 'Hub' should be applied in the outbound direction, and the policy for 'All-Site' should be applied inbound.
  3. Apply an additional outbound control policy to override the site ID overlaps.
  4. Site-list 'All-Site' should be configured with a new match sequence that is lower than the sequence for site-list 'Hub*.
Correct answer: D
Explanation:
The problem is that the site-list ''All-Site'' has a higher match sequence than the site-list ''Hub'', which means that the policy for ''All-Site'' will take precedence over the policy for ''Hub'' for any site that belongs to both lists.This creates a conflict and prevents the engineer from adding a new centralized control policy in Cisco vManage. To resolve this issue, the site-list ''All-Site'' should be configured with a new match sequence that is lower than the sequence for site-list ''Hub'', so that the policy for ''Hub'' will be applied first and then the policy for ''All-Site'' will be applied only to the remaining sites that are not in the ''Hub'' list.Reference:Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5), Module 3: Cisco SD-WAN Cloud OnRamp for Colocation, Lesson 3: Cisco SD-WAN Cloud OnRamp for Colocation - Centralized Control Policies Cisco SD-WAN Cloud OnRamp for Colocation Deployment Guide, Chapter 4: Configuring Centralized Control PoliciesCisco SD-WAN Configuration Guide, Release 20.3, Chapter: Centralized Policy Framework, Section: Policy Configuration Overview
The problem is that the site-list ''All-Site'' has a higher match sequence than the site-list ''Hub'', which means that the policy for ''All-Site'' will take precedence over the policy for ''Hub'' for any site that belongs to both lists.
This creates a conflict and prevents the engineer from adding a new centralized control policy in Cisco vManage. To resolve this issue, the site-list ''All-Site'' should be configured with a new match sequence that is lower than the sequence for site-list ''Hub'', so that the policy for ''Hub'' will be applied first and then the policy for ''All-Site'' will be applied only to the remaining sites that are not in the ''Hub'' list.
Reference:
Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5), Module 3: Cisco SD-WAN Cloud OnRamp for Colocation, Lesson 3: Cisco SD-WAN Cloud OnRamp for Colocation - Centralized Control Policies Cisco SD-WAN Cloud OnRamp for Colocation Deployment Guide, Chapter 4: Configuring Centralized Control Policies
Cisco SD-WAN Configuration Guide, Release 20.3, Chapter: Centralized Policy Framework, Section: Policy Configuration Overview
Question 7
A company with multiple branch offices wants a suitable connectivity model to meet these network architecture requirements:
  • high availability
  • quality of service (QoS)
  • multihoming
  • specific routing needs
Which connectivity model meets these requirements?
  1. hub-and-spoke topology using MPLS with static routing and dedicated bandwidth for QoS
  2. star topology with internet-based VPN connections and BGP for routing
  3. hybrid topology that combines MPLS and SD-WAN
  4. fully meshed topology with SD-WAN technology using dynamic routing and prioritized traffic for QoS
Correct answer: D
Explanation:
A fully meshed topology with SD-WAN technology using dynamic routing and prioritized traffic for QoS meets the network architecture requirements of the company. A fully meshed topology provides high availability by eliminating single points of failure and allowing multiple paths between branch offices. SD-WAN technology enables multihoming by supporting multiple transport options, such as MPLS, internet, LTE, etc. SD-WAN also provides QoS by applying policies to prioritize traffic based on application, user, or network conditions. Dynamic routing allows the SD-WAN solution to adapt to changing network conditions and optimize the path selection for each traffic type. A fully meshed topology with SD-WAN technology can also support specific routing needs, such as segment routing, policy-based routing, or application-aware routing.Reference:Designing and Implementing Cloud Connectivity (ENCC) v1.0[Cisco SD-WAN Design Guide][Cisco SD-WAN Configuration Guide]
A fully meshed topology with SD-WAN technology using dynamic routing and prioritized traffic for QoS meets the network architecture requirements of the company. A fully meshed topology provides high availability by eliminating single points of failure and allowing multiple paths between branch offices. SD-WAN technology enables multihoming by supporting multiple transport options, such as MPLS, internet, LTE, etc. SD-WAN also provides QoS by applying policies to prioritize traffic based on application, user, or network conditions. Dynamic routing allows the SD-WAN solution to adapt to changing network conditions and optimize the path selection for each traffic type. A fully meshed topology with SD-WAN technology can also support specific routing needs, such as segment routing, policy-based routing, or application-aware routing.
Reference:
Designing and Implementing Cloud Connectivity (ENCC) v1.0
[Cisco SD-WAN Design Guide]
[Cisco SD-WAN Configuration Guide]
Question 8
An engineer must enable the OMP advertisement of BGP routes for a specific VRF instance on a Cisco IOS XE SD-WAN device. What should be configured after the global address-family ipv4 is configured?
  1. Set the VRF-specific route advertisements.
  2. Enable bgp advertisement.
  3. Enter sdwan mode.
  4. Disable bgp advertisement.
Correct answer: B
Explanation:
To enable the OMP advertisement of BGP routes for a specific VRF instance on a Cisco IOS XE SD-WAN device, the engineer must first configure the global address-family ipv4 and then enable bgp advertisement under the vrf definition.This will allow the device to advertise the BGP routes learned from the cloud provider to the OMP control plane, which will then distribute them to the other SD-WAN devices in the overlay network1
To enable the OMP advertisement of BGP routes for a specific VRF instance on a Cisco IOS XE SD-WAN device, the engineer must first configure the global address-family ipv4 and then enable bgp advertisement under the vrf definition.This will allow the device to advertise the BGP routes learned from the cloud provider to the OMP control plane, which will then distribute them to the other SD-WAN devices in the overlay network1
Question 9
Refer to the exhibit.
   
Refer to the exhibits. An engineer troubleshoots a Cisco SD-WAN connectivity issue between an on-premises data center WAN Edge and a public cloud provider WAN Edge. The engineer discovers that BFD is Dapping on vEdge1. What is the problem?
  1. The remote Edge device BFD is down.
  2. The remote Edge device failed to respond BFD keepalives.
  3. The remote Edge device has a duplicate IP address.
  4. The control plane deleted the BFD session.
Correct answer: B
Explanation:
BFD (Bidirectional Forwarding Detection) is a protocol that detects failures in the overlay tunnel between Cisco SD-WAN devices. BFD packets are sent and received periodically by each device to check the liveliness and quality of the connection. If a device does not receive a BFD packet from its peer within a specified timeout interval, it considers the peer to be unreachable and reports a BFD down event. This event triggers a control connection state change and a possible route change in the SD-WAN fabric.In this scenario, the engineer discovers that BFD is flapping on vEdge1, which means that the BFD session between vEdge1 and the remote Edge device is going up and down repeatedly. This indicates a connectivity issue between the two devices, such as network congestion, packet loss, or misconfiguration. The most likely cause of the problem is that the remote Edge device failed to respond BFD keepalives within the timeout interval, which resulted in a BFD timeout event on vEdge1. This event caused vEdge1 to mark the remote Edge device as down and notify the control plane. The control plane then tried to establish a new BFD session with the remote Edge device, which may have succeeded or failed depending on the network condition. This cycle of BFD session creation and deletion caused the BFD flapping on vEdge1.The other options are less likely to be the cause of the problem. Option A is incorrect because if the remote Edge device BFD was down, vEdge1 would not receive any BFD packets from it and would not flap. Option C is incorrect because if the remote Edge device had a duplicate IP address, vEdge1 would not be able to establish a BFD session with it in the first place. Option D is incorrect because the control plane does not delete the BFD session unless there is a configuration change or a port-hop event on the device.Reference:Bidirectional Forwarding Detection Flap-Reason Definitions on Cisco vEdge Routers,Cisco Catalyst SD-WAN BFD,Cisco SD WAN: BFD (Bidirectional Forwarding Detection)
BFD (Bidirectional Forwarding Detection) is a protocol that detects failures in the overlay tunnel between Cisco SD-WAN devices. BFD packets are sent and received periodically by each device to check the liveliness and quality of the connection. If a device does not receive a BFD packet from its peer within a specified timeout interval, it considers the peer to be unreachable and reports a BFD down event. This event triggers a control connection state change and a possible route change in the SD-WAN fabric.
In this scenario, the engineer discovers that BFD is flapping on vEdge1, which means that the BFD session between vEdge1 and the remote Edge device is going up and down repeatedly. This indicates a connectivity issue between the two devices, such as network congestion, packet loss, or misconfiguration. The most likely cause of the problem is that the remote Edge device failed to respond BFD keepalives within the timeout interval, which resulted in a BFD timeout event on vEdge1. This event caused vEdge1 to mark the remote Edge device as down and notify the control plane. The control plane then tried to establish a new BFD session with the remote Edge device, which may have succeeded or failed depending on the network condition. This cycle of BFD session creation and deletion caused the BFD flapping on vEdge1.
The other options are less likely to be the cause of the problem. Option A is incorrect because if the remote Edge device BFD was down, vEdge1 would not receive any BFD packets from it and would not flap. Option C is incorrect because if the remote Edge device had a duplicate IP address, vEdge1 would not be able to establish a BFD session with it in the first place. Option D is incorrect because the control plane does not delete the BFD session unless there is a configuration change or a port-hop event on the device.Reference:Bidirectional Forwarding Detection Flap-Reason Definitions on Cisco vEdge Routers,Cisco Catalyst SD-WAN BFD,Cisco SD WAN: BFD (Bidirectional Forwarding Detection)
Question 10
What is the role of service providers to establish private connectivity between on-premises networks and Google Cloud resources?
  1. facilitate direct, dedicated network connections through Google Cloud Interconnect
  2. enable intelligent routing and dynamic path selection using software-defined networking
  3. provide end-to-end encryption for data transmission using native IPsec
  4. accelerate content delivery through integration with Google Cloud CDN
Correct answer: A
Explanation:
The role of service providers to establish private connectivity between on-premises networks and Google Cloud resources is to facilitate direct, dedicated network connections through Google Cloud Interconnect. Google Cloud Interconnect is a service that allows customers to connect their on-premises networks to Google Cloud through a service provider partner. This provides low latency, high bandwidth, and secure connectivity to Google Cloud services, such as Google Compute Engine, Google Cloud Storage, and Google BigQuery. Google Cloud Interconnect also supports hybrid cloud scenarios, such as extending on-premises networks to Google Cloud regions, or connecting multiple Google Cloud regions together. Google Cloud Interconnect offers two types of connections: Dedicated Interconnect and Partner Interconnect. Dedicated Interconnect provides physical connections between the customer's network and Google's network at a Google Cloud Interconnect location. Partner Interconnect provides virtual connections between the customer's network and Google's network through a supported service provider partner. Both types of connections use VLAN attachments to establish private connectivity to Google Cloud Virtual Private Cloud (VPC) networks.Reference:Designing and Implementing Cloud Connectivity (ENCC) v1.0[Google Cloud Interconnect Overview][Google Cloud Interconnect Documentation]
The role of service providers to establish private connectivity between on-premises networks and Google Cloud resources is to facilitate direct, dedicated network connections through Google Cloud Interconnect. Google Cloud Interconnect is a service that allows customers to connect their on-premises networks to Google Cloud through a service provider partner. This provides low latency, high bandwidth, and secure connectivity to Google Cloud services, such as Google Compute Engine, Google Cloud Storage, and Google BigQuery. Google Cloud Interconnect also supports hybrid cloud scenarios, such as extending on-premises networks to Google Cloud regions, or connecting multiple Google Cloud regions together. Google Cloud Interconnect offers two types of connections: Dedicated Interconnect and Partner Interconnect. Dedicated Interconnect provides physical connections between the customer's network and Google's network at a Google Cloud Interconnect location. Partner Interconnect provides virtual connections between the customer's network and Google's network through a supported service provider partner. Both types of connections use VLAN attachments to establish private connectivity to Google Cloud Virtual Private Cloud (VPC) networks.
Reference:
Designing and Implementing Cloud Connectivity (ENCC) v1.0
[Google Cloud Interconnect Overview]
[Google Cloud Interconnect Documentation]
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