ENCC - Designing and Implementing Cloud Connectivity Free Sample Questions

This design provides the highest resiliency by eliminating single points of failure. Using different on-premises routers protects against a device failure on the customer side. Using separate Direct Connect gateways protects against a logical failure within the AWS Direct Connect service. Attaching both to a Transit Gateway allows for centralized routing and seamless failover between the paths. Terminating on a single router or VGW introduces a single point of failure.

The MM_NO_STATE status indicates that the initiator (the Cisco router) sent the initial IKE Main Mode (MM) packets but received no response from the peer (Azure VPN Gateway). This almost always points to a connectivity issue where the IKE negotiation packets (UDP port 500 for ISAKMP) are being blocked by a firewall, an ACL, or a routing problem. Phase 2 mismatches would occur after Phase 1 is complete, and BGP issues are irrelevant to the IPsec tunnel establishment itself.

The Application-Aware Routing (AAR) policy is used to identify Microsoft Teams traffic and steer it onto the path that meets the defined SLA (e.g., lowest latency), enabling the direct internet access.

A Centralized Data Policy is required to create the traffic engineering logic. It will match the non-Teams Microsoft 365 traffic and direct it towards the service VPN that leads to the regional data center, while allowing the Teams traffic (handled by the AAR policy) to exit locally.

An SDCI provider (like Megaport or Equinix Fabric) offers a private, high-speed backbone that connects to major cloud providers globally. This model allows the enterprise to connect its data centers to the SDCI fabric once and then programmatically spin up virtual cross-connects to various cloud regions and providers. This meets the requirements for private connectivity, low latency, and scalability without the complexity and cost of managing numerous individual private circuits.

This statement is false. Cisco SD-WAN Cloud OnRamp for SaaS does not use BGP for path selection. Instead, it continuously probes the SaaS application over all available paths using HTTP probes. It then calculates a quality of experience (QoE) score based on latency and loss, and steers user traffic down the best-performing path in real-time. BGP is used for underlay or overlay routing, not for the dynamic, application-level path selection specific to this feature.

This configuration correctly sets up a Virtual Tunnel Interface (VTI). A VTI creates a routable interface, which is essential for running dynamic routing protocols like BGP over the IPsec tunnel. The tunnel mode ipsec ipv4 and tunnel protection ipsec profile MYPROFILE commands bind the IPsec policy to the tunnel interface. The crypto map configuration is used for policy-based VPNs, which do not support dynamic routing protocols effectively.

In Cisco SD-WAN, each transport on a vEdge is represented by a TLOC (Transport Locator). When a transport goes down, the vEdge loses its BFD sessions over that path, and the OMP route associated with that TLOC is withdrawn. In the vManage dashboard, specifically under the device's control connections monitoring, the entry for the TLOC associated with the failed MPLS transport will disappear or show as down. The vEdge icon itself will likely remain green as long as it has connectivity through its other transport.

FEDRAMP High requires stringent security controls. AWS Direct Connect provides a private, dedicated connection that bypasses the public internet. Adding MACsec provides point-to-point security at Layer 2, encrypting all data between the on-premises router and the AWS Direct Connect device. This combination of a private circuit and strong, line-rate encryption is the most suitable approach for meeting the high-security posture demanded by FEDRAMP High compliance.

This is the optimal solution. It meets all requirements: high availability (redundant connections to SDCI), consistent low latency (private backbone), sufficient bandwidth (10 Gbps circuits), and simplified management. The SDCI provider abstracts the complexity of connecting to multiple clouds, allowing the IT team to manage connectivity and routing through a single portal. It also provides a clear path for routing between AWS and Azure over the private SDCI backbone, fulfilling the dynamic routing requirement efficiently.

The vBond Orchestrator is the initial point of contact for any device joining the SD-WAN fabric. Its primary roles are to authenticate the vEdge router (ensuring it's on a whitelist), authorize it to join the fabric, and provide the IP addresses of the vManage and vSmart controllers. It effectively bootstraps the device into the control plane. Policy distribution is handled by vSmart, and the GUI is provided by vManage.