ACA Aruba Associate Cloud & SD-WAN 1 — Questions and Answers
Question 1: What is SD-WAN (Software-Defined Wide Area Network)?
- A physical appliance that replaces traditional routers
- A software-based approach to managing WAN connections that abstracts the underlay transport from the overlay network (Correct answer)
- A protocol for encrypting wireless WAN traffic
- A type of VPN that only supports MPLS connections
Correct answer: A software-based approach to managing WAN connections that abstracts the underlay transport from the overlay network
SD-WAN is a software-defined approach to WAN management that abstracts the underlying transport (MPLS, broadband, LTE) and provides centralized policy-based traffic management across multiple WAN links.
Question 2: What is the primary benefit of SD-WAN over traditional WAN architectures for enterprise branch offices?
- SD-WAN eliminates the need for any WAN connectivity
- SD-WAN enables intelligent, application-aware traffic routing across multiple WAN links with centralized management (Correct answer)
- SD-WAN provides faster CPU processing for routing decisions
- SD-WAN replaces the need for security appliances at branch offices
Correct answer: SD-WAN enables intelligent, application-aware traffic routing across multiple WAN links with centralized management
SD-WAN improves on traditional WAN by enabling application-aware traffic steering, load balancing across multiple transport links, and centralized policy management from a cloud controller.
Question 3: Which Aruba product line provides SD-WAN capabilities for branch office deployments?
- Aruba IAP (Instant Access Point)
- Aruba EdgeConnect (Correct answer)
- Aruba ClearPass
- Aruba 6300 Switch
Correct answer: Aruba EdgeConnect
Aruba EdgeConnect is Aruba's SD-WAN solution designed for branch offices, providing application-aware routing, WAN optimization, and centralized management via Aruba Orchestrator.
Question 4: What is the role of the Aruba Orchestrator in an SD-WAN deployment?
- To provide wireless spectrum analysis for branch APs
- To serve as the centralized SD-WAN management and policy controller for all EdgeConnect appliances (Correct answer)
- To act as the primary DHCP server for all branch offices
- To perform deep packet inspection on all WAN traffic
Correct answer: To serve as the centralized SD-WAN management and policy controller for all EdgeConnect appliances
Aruba Orchestrator is the centralized management platform for Aruba EdgeConnect SD-WAN, providing policy configuration, template management, visibility, and orchestration across all branch appliances.
Question 5: What is a key feature of SD-WAN that allows organizations to reduce costs compared to traditional MPLS-only WAN?
- SD-WAN eliminates the need for branch routers entirely
- SD-WAN can use lower-cost broadband Internet links alongside or instead of expensive MPLS circuits (Correct answer)
- SD-WAN compresses all WAN traffic to reduce bandwidth requirements
- SD-WAN uses satellite links to bypass ISP charges
Correct answer: SD-WAN can use lower-cost broadband Internet links alongside or instead of expensive MPLS circuits
SD-WAN allows organizations to augment or replace expensive MPLS circuits with lower-cost broadband Internet connections while maintaining application performance through intelligent traffic steering.
Question 6: What does 'application-aware routing' mean in the context of Aruba SD-WAN?
- The SD-WAN device inspects URLs to filter web content
- Traffic is steered over WAN links based on the specific application's requirements such as latency, jitter, or packet loss thresholds (Correct answer)
- All applications are encrypted before leaving the branch
- SD-WAN automatically updates application software on branch servers
Correct answer: Traffic is steered over WAN links based on the specific application's requirements such as latency, jitter, or packet loss thresholds
Application-aware routing in Aruba SD-WAN identifies applications and routes their traffic over the WAN path that best meets their specific performance requirements, such as low-latency paths for VoIP.
ACA Aruba Associate Cloud & SD-WAN 1
What is SD-WAN (Software-Defined Wide Area Network)?