SD-WAN-Engineer Operations And Monitoring Practice Test 2 — 15 Questions

Question 1

During an ADEM test, you identify 'Server Latency'. What does this indicate?

Accepted Answer

The destination application server is taking too long to process the request.. Server latency specifically refers to the time taken by the destination application server to respond.

Answer

The DNS resolution is failing.

Answer

The firewall is blocking the traffic.

Answer

The network path is congested.

Question 2

Which TWO actions should an administrator take when configuring a new WAN Clarity monitor?

Accepted Answer

Select the source and destination sites for the monitor.. WAN Clarity requires identifying the application and the endpoints to measure properly.

Answer

Disable all other monitoring features.

Answer

Configure a manual static route for the traffic.

Answer

Assign a unique physical port ID to the monitor.

Question 3

Which TWO metrics are commonly used to assess the health of a site in the WAN Clarity dashboard?

Accepted Answer

Jitter.. WAN Clarity tracks jitter and loss as primary indicators of circuit health.

Answer

CPU Utilization.

Answer

Temperature.

Answer

Interface Speed.

Question 4

Which THREE configuration steps are required to implement DCI using Layer 3 extensions?

Accepted Answer

Assign unique TLOCs to the DCI links to differentiate them.. DCI requires OMP, site-of-origin tags, and specific interface settings to function correctly.

Answer

Enable spanning tree on all interfaces.

Answer

Implement BGP on all internal interfaces.

Question 5

Which THREE factors must be considered when deploying a high-availability (HA) pair?

Accepted Answer

Direct heartbeat link between the two routers.. HA deployment requires specific physical connectivity, synchronization settings, and role management.

Answer

Different system IPs for each unit.

Answer

Identical hardware models for the HA pair.

Question 6

Which TWO tools can be used to troubleshoot ADEM path issues?

Accepted Answer

End-to-End Path Analysis.. ADEM integrates with built-in path analysis and traceroute-like tools.

Answer

Packet capture on the WAN interface.

Answer

Vbond status verification.

Answer

Firmware upgrade.

Question 7

Which THREE parameters are part of the HA state synchronization process?

Accepted Answer

Interface administrative state.. In HA state synchronization, the firewall synchronizes the interface administrative state (Option A) so that if an interface is administratively disabled on the active unit, the passive unit reflects that same up/down administrative status and does not incorrectly take over forwarding on that link. Data plane tunnel session state (Option C) is synchronized because established IPsec/SSL VPN tunnel sessions and their sequence numbers must survive a failover to keep existing tunnels alive without renegotiation. Control plane state (Option D) is also synchronized, covering routing protocols, dynamic routing tables, and other control-plane information so the passive device can immediately assume forwarding decisions after failover. Fan speed (Option B) and power supply voltage (Option E) are hardware environmental telemetry values, not HA synchronization parameters, and are not exchanged between HA peers.

Answer

Fan speed.

Answer

Power supply voltage.

Question 8

When DCI is implemented via an L3VPN overlay, which OMP attribute is most critical to ensure traffic prefers the direct link over the DCI link for reaching local subnets?

Accepted Answer

TLOC Preference.. OMP TLOC preference is used to influence path selection across different transports and links.

Answer

Color.

Answer

Site ID.

Answer

OMP Tag.

Question 9

Which THREE actions occur when a device transitions to 'Active' status in an HA pair?

Accepted Answer

The device restarts its BFD sessions.. The transition triggers BFD, OMP advertisement, and interface reactivation.

Answer

The device initiates a factory reset.

Answer

The device purges all log history.

Question 10

Which TWO areas should you verify if your ADEM synthetic tests are consistently failing?

Accepted Answer

Reachability from the source device to the target application.. Failed tests usually point to connectivity or configuration policy issues.

Answer

The number of active users in the branch.

Answer

The device's power supply status.

Answer

The color of the chassis.

Question 11

You are monitoring a site using ADEM and notice that the 'Last Mile' latency is high. What does this mean?

Accepted Answer

The congestion is on the circuit segment between the edge device and the service provider.. Last Mile latency refers to the segment between the user's branch location and the local ISP handoff.

Answer

The local device is overheating.

Answer

The data center is congested.

Answer

The ADEM server is down.

Question 12

A network operations engineer needs to confirm that the OMP routes advertised by a branch Cisco IOS XE SD-WAN router are actually being received by the vSmart controllers. The engineer has SSH access to the branch router. Which operational command should be used to display the OMP routes that the local router has received from the controllers?

Accepted Answer

show sdwan omp routes. The OMP route table on a Cisco IOS XE SD-WAN device holds the routes received from and advertised to the vSmart controllers. Verifying this table confirms whether the branch router actually learned the expected OMP prefixes. Control connection status, IP routing table keywords, and policy displays address different layers and cannot substitute for inspecting the OMP routes themselves.

Answer

show sdwan policy from-vsmart

Answer

show ip route omp

Answer

show sdwan control connections

Question 13

A network operations engineer is investigating why a vEdge router at a branch site is not establishing control connections to any vSmart controller after a recent configuration change. The engineer runs the command 'show control connections' on the vEdge and sees no output. Which of the following is the most likely cause?

Accepted Answer

The vEdge router's system IP is not reachable from the vSmart controllers.. Control connections between vEdge and vSmart rely on IP reachability of the system IP addresses. When no control connections appear, the first thing to verify is whether the vEdge can reach the vSmart controllers. Configuration changes that affect routing or firewall rules can break this reachability, causing the vEdge to fail to establish any control connections. Checking ping and traceroute to the vSmart system IPs is a logical next step.

Answer

The vSmart controller's certificate has expired.

Answer

The vEdge router is configured with an incorrect organization name.

Answer

The vEdge router's OMP session is stuck in the 'init' state.

Question 14

A network engineer notices that a specific site's Application Experience (AppQoE) statistics are not appearing in vManage even though the tunnel is up and traffic is flowing. The engineer confirms that the application-aware routing policy is applied and the SLA class is configured. Which action should be taken to ensure AppQoE statistics are collected and reported?

Accepted Answer

Ensure that the branch device has the 'appqoe' feature enabled and that the vManage statistics collection interval is configured.. AppQoE statistics are collected only when the application experience feature is enabled on the device and the statistics collection is configured in vManage. The tunnel being up and the routing policy applied are necessary but not sufficient; the telemetry path must also be active. Enabling the feature and setting the collection interval ensures the data is sent to vManage for reporting.

Answer

Configure a vManage alarm for AppQoE statistics and set the severity to critical.

Answer

Enable NetFlow on the WAN interface of the branch router.

Answer

Restart the vManage statistics database to force a refresh of all site data.

Question 15

A network administrator is troubleshooting an application performance issue reported by users at a branch site. The administrator suspects that the SD-WAN application-aware routing policy is not steering traffic correctly. Which vManage monitoring tool should the administrator use to view per-application path selection and performance metrics in real time?

Accepted Answer

Monitor > Applications > Application-Aware Routing. To troubleshoot application-aware routing, the administrator must view per-application path selection and performance. The Monitor > Applications > Application-Aware Routing page in vManage provides exactly this: it lists applications, their current paths, and the metrics that influenced the path choice. This allows the administrator to confirm whether the policy is being applied correctly and to identify any path performance issues affecting specific applications.

Answer

Monitor > Network > Paths

Answer

Monitor > Network > Interfaces

Answer

Monitor > Network > Tunnel