SD-WAN-Engineer Planning And Design Practice Test 2 — 15 Questions

Question 1

A customer wants to deploy a Hub-and-Spoke model with redundant hubs. What must be configured to ensure seamless transition if the primary hub fails?

Accepted Answer

Hub Priority and Failover settings. Configuring redundant hubs in the controller allows the spokes to fail over to the secondary hub automatically.

Answer

IPsec Key Exchange

Answer

Static Route redistribution

Answer

BGP Multi-homing

Question 2

What is the purpose of the 'site-id' in the Prisma SD-WAN branch configuration?

Accepted Answer

To uniquely identify the site within the fabric. The site-id is a unique identifier used to manage and reference the site within the SD-WAN fabric.

Answer

To define the management VLAN

Answer

To configure the local gateway IP

Answer

To identify the physical location on a map

Question 3

You are designing an SD-WAN path for a high-bandwidth application that is sensitive to out-of-order packets. Which configuration setting minimizes packet reordering in a multi-path environment?

Accepted Answer

Flow-based load balancing. Enabling session affinity or path steering policies that restrict traffic to a single path avoids reordering issues common in multi-path load balancing.

Answer

Jitter Buffer increase

Answer

Aggressive TCP acceleration

Answer

Packet-based load balancing

Question 4

Which command or interface path is used to verify the status of the SD-WAN tunnel between two branch sites?

Accepted Answer

Controller > Monitoring > Tunnels. The Dashboard or the 'show' commands in the CLI allow for tunnel status verification.

Answer

Configuration > Sites > WAN Interfaces

Answer

Policies > Security > Rules

Answer

Network > Routing > BGP

Question 5

In the context of the SD-WAN Controller, what does the 'Template' object represent?

Accepted Answer

A reusable configuration baseline. A template is a reusable configuration set applied to multiple gateways to ensure consistency.

Answer

A single device configuration file

Answer

A firmware update package

Answer

A hardware specification sheet

Question 6

You are troubleshooting a performance issue where traffic is not taking the expected 'optimal' path. Which tool should you examine first to see the PFR path selection decision?

Accepted Answer

Application Performance Logs. The PFR path selection logs or the path monitoring dashboard will show why a specific path was chosen.

Answer

System Health Logs

Answer

Controller Audit Logs

Answer

Packet Capture

Question 7

A retail customer needs to prioritize POS (Point of Sale) traffic over guest WiFi. Which policy type governs this bandwidth allocation?

Accepted Answer

QoS Policy. QoS policies allow for traffic prioritization and bandwidth limits per service/application.

Answer

Security Policy

Answer

Route Policy

Answer

Access Policy

Question 8

A company is migrating to a cloud-native architecture. How does Prisma SD-WAN support multi-cloud connectivity?

Accepted Answer

Virtual Gateways (vGateways). Through CloudBlades and virtual gateways (vGateways) deployed in public cloud VPCs/VNets.

Answer

Manual BGP peering with ISPs

Answer

Physical site-to-site VPNs only

Answer

Cloud-only routing protocols

Question 9

You need to allow direct internet access for SaaS applications from the branch site. What is the correct term for this configuration?

Accepted Answer

Direct Internet Access (DIA). Local Internet Breakout (LIB) is the feature that allows traffic to bypass the hub and go directly to the internet.

Answer

VPN Bypass

Answer

Backhaul Traffic

Answer

Hub-Exit

Question 10

Which Prisma SD-WAN interface is used to connect to the local LAN?

Accepted Answer

LAN Interface. The LAN-side interface connects to switches, servers, and internal users.

Answer

Tunnel Interface

Answer

Management Interface

Answer

WAN Interface

Question 11

You want to audit who changed a policy on the Controller. Where is this information logged?

Accepted Answer

Controller Audit Logs. The Audit logs record all administrative actions, including policy changes.

Answer

Performance Monitoring

Answer

Security Policy Hits

Answer

System Event Logs

Question 12

When setting up a branch, you need to define the 'Underlay' transport. What does this refer to?

Accepted Answer

The physical/logical circuits provided by the ISP. The underlay refers to the raw transport provided by the ISP (e.g., MPLS, Broadband).

Answer

The internal VLAN structure

Answer

The encrypted VPN tunnels

Answer

The routing protocol used internally

Question 13

To ensure high availability, you are implementing Active-Active gateway deployment at a large branch. What is required for this to work correctly?

Accepted Answer

A dedicated Layer 2 heart-beat link between gateways. Active-Active deployment requires synchronization between the gateways, typically via a heartbeat link.

Answer

A separate management network

Answer

Separate WAN links for each gateway

Answer

Static IP addresses on all interfaces

Question 14

Which criteria can be used to steer traffic in a Performance Routing policy? (Choose TWO)

Accepted Answer

Packet Loss. Latency and packet loss are key metrics used to determine the best path in PFR.

Answer

Time of day

Answer

Device serial number

Answer

User's physical weight

Question 15

Which of the following are valid transport types that can be defined in a Prisma SD-WAN site configuration? (Choose TWO)

Accepted Answer

MPLS. Public Internet and MPLS are standard transport categories in the SD-WAN policy engine.

Answer

Bluetooth

Answer

Fiber Optic

Answer

Serial