Cisco 500-490 Dumps Questions Answers

 A cloud-based SD-WAN deployment is a model of delivering SD-WAN services from the cloud, rather than from on-premises hardware or software appliances. A cloud-based SD-WAN deployment has several benefits, such as:

Instant scale: A cloud-based SD-WAN deployment can scale up or down the network resources and bandwidth on demand, without requiring additional hardware or manual configuration.  This enables the network to adapt to the changing traffic patterns and user demands, while optimizing the network performance and efficiency 1 2 .

Reduced costs: A cloud-based SD-WAN deployment can lower the capital and operational expenses of the network, by eliminating the need for expensive and complex WAN infrastructure, such as MPLS circuits, routers, firewalls, and WAN optimization devices.  A cloud-based SD-WAN deployment can also leverage the economies of scale and the pay-as-you-go model of the cloud, which can reduce the network costs per megabit 1 2 .

Simplified management: A cloud-based SD-WAN deployment can simplify the network management and operation, by providing a centralized and unified dashboard that can monitor, configure, and troubleshoot the network across multiple sites and regions.  A cloud-based SD-WAN deployment can also automate the network provisioning, orchestration, and optimization, by applying intelligent policies and analytics based on the business intent and network conditions 1 2 .

Enhanced security: A cloud-based SD-WAN deployment can enhance the network security and compliance, by providing built-in and integrated security features, such as encryption, firewall, VPN, IPS, and antivirus.  A cloud-based SD-WAN deployment can also leverage the cloud security services, such as SASE, to provide secure and direct access to the cloud applications and platforms, without compromising the network performance and user experience 1 2 3 .

Improved cloud readiness: A cloud-based SD-WAN deployment can improve the cloud readiness and agility of the network, by enabling seamless and optimized connectivity to the public cloud, SaaS, and cloud interconnect providers.  A cloud-based SD-WAN deployment can also support the multicloud and hybrid-cloud strategies, by allowing the network to operate as a cloud-native WAN overlay, using software-defined automation and orchestration tools 1 2 3 .

References :

What Is SD-WAN? - Software-Defined WAN (SDWAN) - Cisco

SD-WAN Benefits: 5 Business Advantages of SD-WAN - Fortinet

What are the Benefits of SD-WAN? - Cisco

What are the Benefits of SD-WAN?

SD-WAN and SASE: The new landscape of networking

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The overall health page of the assurance component in the Cisco DNA Center displays two primary categories:  Client  and  Network 1 .  The Client category shows the health score of all the wired and wireless clients connected to the network, along with the number of clients, the top issues affecting the clients, and the distribution of clients by type, OS, and SSID 1 .  The Network category shows the health score of all the network devices, such as switches, routers, wireless controllers, and access points, along with the number of devices, the top issues affecting the devices, and the distribution of devices by site, family, and role 1 .

The other options are not primary categories on the overall health page.  Server is not a category, but a type of client that can be filtered in the Client category 1 .  Access-Distribution and Core are not categories, but roles of network devices that can be filtered in the Network category 1 .  Wired is not a category, but a subcategory of the Client category that shows the health score of the wired clients only 1 .

References :

Cisco DNA Assurance User Guide, Release 1.3.1.0 - Monitor and Troubleshoot the Health of Your Network [Cisco DNA Center]

Designing Cisco Enterprise Networks (ENDESIGN) Exam Topics [Cisco]

Cisco Validated Design Guides [Cisco]

The three focus areas for reinventing the WAN are:

Secure Elastic Connectivity: This refers to the ability to provide secure and flexible connectivity to any application, anywhere, and anytime. Secure elastic connectivity enables the network to adapt to the changing business needs and user demands, while maintaining security and performance.  Secure elastic connectivity leverages SD-WAN technologies, such as Cloud OnRamp, SASE, and ThousandEyes, to optimize the network path, encrypt the traffic, and monitor the end-to-end visibility across the WAN 1 2 .

Application Quality of Experience: This refers to the ability to ensure optimal and consistent user experience for any application, regardless of the network conditions.  Application quality of experience uses SD-WAN technologies, such as vAnalytics, to measure and improve the application performance, availability, and reliability across the WAN 3 .  Application quality of experience also uses intelligent policies and real-time analytics to prioritize the critical applications and steer the traffic to the best-performing path 4 .

Cloud First: This refers to the ability to embrace the cloud as the primary platform for delivering applications and services to the users. Cloud first enables the network to support the multicloud strategy and accelerate the cloud adoption.  Cloud first leverages SD-WAN technologies, such as Cloud OnRamp, to simplify and automate the connectivity to the public cloud, SaaS, and cloud interconnect providers 4 .  Cloud first also enables the network to operate as a cloud-native WAN overlay, using software-defined automation and orchestration tools 5 .

References :

Cisco SD-WAN Architecture Overview

SD-WAN and SASE: The new landscape of networking

Under the vAnalytics Hood: Enabling Total Network Visibility, Total Network Control

SD-WAN Capabilities - The New Landscape of Networking

Software-defined WAN (SD-WAN): the new landscape of networking

The 4 Focus areas for reinventing the WAN are:

• Secure Elastic Connectivity

• Cloud First

• Application Quality of Experience

• Agile Operations

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