UPDATED [2024] Pass Cisco 500-490 Exam in First Attempt Guaranteed [Q16-Q34]

Explanation
Cisco SDA is a network architecture that uses software-defined networking (SDN) principles to create a secure, scalable, and consistent network fabric across wired, wireless, and VPN connections. It also provides visibility, control, and automation for the network devices, endpoints, users, and applications. To demonstrate SDA effectively, it is important to follow some best practices and recommendations, such as1:
Focus on business benefits: SDA delivers business outcomes such as improved network performance, reduced operational costs, increased security, and simplified compliance. By focusing on the business benefits of SDA, you can align the solution with the customer’s pain points and needs, and show how SDA can help them achieve their goals.
Show the customer how to integrate ISE into DNA Center at the end of the demo: ISE is the policy engine that defines and enforces the network segmentation and access policies for SDA. DNA Center is the management platform that automates and orchestrates the SDA network. By showing the customer how to integrate ISE into DNA Center at the end of the demo, you can demonstrate the ease of use and configuration of SDA, and how the two products work together to provide a unified and secure network solution.
The other three options are not helpful for demonstrating SDA:
Use the CLI to perform as much of the configuration as possible: SDA is designed to simplify and automate the network configuration and management, and to reduce the reliance on manual and error-prone CLI commands. By using the CLI to perform as much of the configuration as possible, you can undermine the value proposition and differentiation of SDA, and make the solution appear complex and tedious.
Keep the demo at a high level: SDA is a comprehensive and diverse solution that covers various use cases, such as device management, asset visibility, software-defined segmentation, software-defined access, guest and wireless access, BYOD, posture assessment, threat detection and response, and more2.
By keeping the demo at a high level, you can miss the opportunity to showcase the features and capabilities of SDA that are relevant and applicable for the customer’s use case, and to address their questions and concerns.
Be sure you explain the major technologies such as VXLAN and LISP in depth: VXLAN and LISP are the underlying technologies that enable the data plane and control plane of SDA, respectively. They are responsible for encapsulating and forwarding the traffic, and mapping the endpoint identities and locations, within the SDA fabric3. While VXLAN and LISP are important for SDA, they are not the key selling points, because they are technical details that are abstracted and automated by SDA. By explaining the major technologies such as VXLAN and LISP in depth, you can confuse or bore the customer with technical details that are not essential for their use case, and divert their attention from the core benefits and features of SDA.
References:
Cisco Identity Services Engine (ISE) Use Cases2 : Software-Defined Access Overview Demo – Cisco1 :
Software-Defined Access – Cisco4 : Cisco SD-Access Solution Design Guide (CVD) – Cisco3

The overall health page of the assurance component in the Cisco DNA Center displays two primary categories: Client and Network1. 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 SSID1. 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 role1.
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 category1. Access-Distribution and Core are not categories, but roles of network devices that can be filtered in the Network category1. Wired is not a category, but a subcategory of the Client category that shows the health score of the wired clients only1.
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]

Explanation
https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Campus/CVD-Software-Defined-Access-Design-Guide-2018AUG.pdf
https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Campus/CVD-Software-Defined-Access-Design-Gu

The Proactive Insights feature of Cisco DNA Center Assurance is a function that generates synthetic traffic to perform tests that raise awareness of potential network issues. This feature uses the Cisco DNA Center platform to create and schedule tests that simulate real user traffic and measure the network performance and user experience. The tests can be run on demand or periodically, and the results are displayed in the Cisco DNA Center dashboard. The Proactive Insights feature helps network administrators to proactively identify and troubleshoot network issues before they affect the end users12. References:
* Cisco DNA Center Assurance User Guide, Release 2.1.2
* Understanding Cisco DNA Center Assurance!

Cisco DNA Assurance provides three key differentiators that our competitors are unable to match:
* Proactive approach to guided remediation: Cisco DNA Assurance uses AI and machine learning to analyze network data and provide insights on network performance, issues, and optimization. It also offers guided remediation options that automate the process of issue resolution and performance enhancement. This reduces manual troubleshooting operations and saves time and resources for network administrators12.
* Apple Insights: Cisco DNA Assurance integrates with Apple devices and applications to provide enhanced visibility and analytics on the user experience and network performance. It also leverages the Fast Lane feature to prioritize critical iOS and macOS traffic over the wireless network. This improves the quality of service and collaboration for Apple users and applications13.
* Network time travel: Cisco DNA Assurance allows network administrators to go back in time and view the network state and health at any given point. This enables them to identify the root cause of issues, compare network performance over time, and troubleshoot historical problems. This feature is unique to Cisco DNA Assurance and provides a powerful tool for network analysis and optimization1 .
References:
1: Cisco DNA Assurance: AI/ML guided IT operations (AIOps) At-a-Glance 2: Leveraging Cisco Intent-Based Networking DNA Assurance (DNAAS) 3: Cisco DNA Assurance Unlocking the Power of Data, page 39 : Cisco DNA Assurance Unlocking the Power of Data, page 74

The vBond orchestrator is an SD-WAN router responsible for authenticating and orchestratingconnectivity between the vSmart controllers and SD-WAN routers. It is the sole device in the network that requires a public IP address for all SD-WAN devices to connect to it. The vBond orchestrator has three major functions:
* Controller discovery: The vBond orchestrator acts as the initial point of contact for all SD-WAN components that join the network. It authenticates the devices using pre-installed credentials and assigns them to a vSmart controller. The vBond orchestrator also provides the IP addresses of the vSmart controllers and the vManage NMS to the SD-WAN routers.
* NAT traversal: The vBond orchestrator facilitates the establishment of secure DTLS or TLS tunnels between the SD-WAN components that are behind NAT devices. The vBond orchestrator acts as a rendezvous point for the NATed devices and helps them exchange their public IP addresses and port numbers. The vBond orchestrator also performs NAT keepalive and hole punching to maintain the NAT bindings and prevent the NAT devices from timing out the sessions.
* Certificate management: The vBond orchestrator acts as the certificate authority (CA) for the SD-WAN network. It generates and signs the certificates for the SD-WAN components and distributes them to the devices. The certificates are used to authenticate the devices and encrypt the control and data plane traffic.
References:
* Cisco SD-WAN Architecture Overview
* Cisco Catalyst SD-WAN Getting Started Guide
* New Training: Identify Cisco SD-WAN Components

Explanation
Cisco ISE is a policy decision point that enables enterprises to ensure compliance, enhance infrastructure security, and streamline service operations. Some features and benefits of Cisco ISE include1:
Zero trust across the network: ISE allows only trusted users and devices access to resources on your network. It also uses intel to automatically identify, classify and profile devices.
Policy and lifecycle management: ISE simplifies the delivery of consistent, highly secure access control across wired, wireless, and VPN connections. It also allows users to add and manage their own devices through self-service portals.
Remote management and deployment: ISE supports cloud-based deployment and management, as well as integration with other Cisco products and third-party solutions.
Site survivability: ISE provides local authentication and authorization services for remote sites, even when the connection to the central ISE server is lost.
Visibility of all devices and their users: ISE can provide data about when a specific device connected to the network, what type of device it is, who is using it, what applications are running on it, and where it is located.
Among these features, two statements are true regarding Cisco ISE:
ISE plays a critical role in SD-Access: SD-Access is a network architecture that uses software-defined networking (SDN) principles to create a secure, scalable, and consistent network fabric. ISE is the policy engine that defines and enforces the network segmentation and access policies for SD-Access2.
ISE can provide data about when a specific device connected to the network: ISE uses a number of probes to collect attributes for all endpoints on the network, and pass them to the Profiler analyzer, where the known endpoints are classified according to their associated policies and identity groups. ISE can also provide historical data about the endpoint connections, such as the time, duration, location, and user of the connection3.
The other three statements are false regarding Cisco ISE:
The major business outcomes of ISE are enhanced user experience and secure VLAN segmentation: ISE provides more than just user experience and VLAN segmentation. It also delivers business outcomes such as improved network performance, reduced operational costs, increased security, and simplified compliance4.
An ISE deployment requires only a Cisco ISE network access control appliance: ISE can be deployed on different platforms, such as physical appliances, virtual machines, or cloud services. An ISE deployment also requires other components, such as network devices, endpoints, and external identity sources5.
Without integration with any other product, ISE can track the actual physical location of a wireless endpoint as it moves: ISE can provide the location information of an endpoint based on the network device that it is connected to, such as the switch port or the wireless access point. However, to track the actual physical location of a wireless endpoint as it moves, ISE needs to integrate with other products, such as Cisco DNA Center, Cisco Connected Mobile Experiences (CMX), or Cisco Wireless LAN Controller (WLC)6.
References:
Cisco Content Hub – Cisco ISE Features1 : Cisco SD-Access Solution Design Guide (CVD) – Cisco2 : Cisco ISE Network Discovery3 : Cisco Identity Services Engine (ISE) – Cisco4 : Cisco Identity Services Engine Hardware Installation Guide, Release 2.7 – Cisco ISE Deployment [Cisco Identity Services Engine] – Cisco5 :
Cisco Identity Services Engine Administrator Guide, Release 2.7 – Configure Location Mapping [Cisco Identity Services Engine] – Cisco6

Cisco ISE is a comprehensive solution that enables enterprises to enforce consistent and secure access policies across wired, wireless, and VPN connections. It also provides visibility, control, and automation for the network devices, endpoints, users, and applications. To sell Cisco ISE effectively, it is important to highlight the benefits and features of the solution that address the customer’s pain points and needs. Among the options given, two options help you sell Cisco ISE:
* Showcasing the entire ISE feature set: ISE has a rich and diverse feature set that covers various use cases, such as device management, asset visibility, software-defined segmentation, software-defined access, guest and wireless access, BYOD, posture assessment, threat detection and response, and more1.
By showcasing the entire ISE feature set, you can demonstrate the value proposition and differentiation of ISE from other solutions, and how it can help the customer achieve their business and technical goals.
* Explaining ISE support for 3rd party network devices: ISE is not limited to Cisco networks only. It can also support 3rd party network devices that comply with the standard protocols and interfaces, such as RADIUS, SNMP, TACACS+, 802.1X, MAB,CoA, and EAP2. By explaining ISE support for 3rd party network devices, you can show the customer that ISE is a flexible and interoperable solution that can work with their existing network infrastructure, and that they do not need to replace their non-Cisco devices to deploy ISE.
The other three options are not helpful for selling Cisco ISE:
* Referring to TrustSec as being only supported on Cisco networks: TrustSec is a Cisco technology that enables software-defined segmentation based on security group tags (SGTs) and security group access control lists (SGACLs)3. TrustSec is not only supported on Cisco networks, but also on 3rd party network devices that can integrate with ISE through pxGrid, which is a platform for sharing contextual information across multiple security products4. By referring to TrustSec as being only supported on Cisco networks, you can create a false impression that ISE is a proprietary and closed solution that requires a complete Cisco network overhaul, which can discourage the customer from adopting ISE.
* Discussing the importance of custom profiling: Profiling is a feature of ISE that allows it to identify and classify the endpoints on the network based on their attributes, such as MAC address, IP address, device type, operating system, etc.5. Custom profiling is the ability to create custom profiles and policies for the endpoints that are not recognized by the default ISE profiles. While custom profiling is an important feature of ISE, it is not a key selling point, because it is a complex and time-consuming process that requires a deep understanding of the endpoint attributes and behaviors, and it may not be relevant or applicable for all customers. By discussing the importance of custom profiling, you can confuse or overwhelm the customer with technical details that are not essential for their use case, and divert their attention from the core benefits and features of ISE.
* Downplaying the value of pxGrid as compared to RESTful APIs: pxGrid is a platform that enables ISE to share contextual information, such as identity, location, posture, device type, etc., with other security products, such as firewalls, SIEMs, threat detection systems, etc.4. RESTful APIs are a standard way of communicating with web services, such as ISE, using HTTP methods, such as GET, POST, PUT, DELETE, etc… Both pxGrid and RESTful APIs are valuable for ISE, because they provide different capabilities and benefits. pxGrid allows ISE to exchange real-time and bidirectional information with other security products, and to enforce consistent policies across the network4. RESTful APIs allow ISE to be integrated with external applications and systems, such as portals, dashboards, workflows, etc., and to automate and customize the network operations. By downplaying the value of pxGrid as compared to RESTful APIs, you can misrepresent the functionality and potential of ISE, and miss the opportunity to showcase how ISE can enhance the security and efficiency of the network.
References:
Cisco Identity Services Engine (ISE) Use Cases1 : Cisco Identity Services Engine Network Component Compatibility, Release 2.72 : Cisco TrustSec3 : Cisco pxGrid4 : Cisco ISE Network Discovery5 : Cisco Identity Services Engine Administrator Guide, Release 2.7 – Configure Custom Profiling Policies [Cisco Identity Services Engine] – Cisco : Cisco Identity Services Engine API Reference Guide, Release 2.7 – Cisco ISE REST APIs [Cisco Identity Services Engine] – Cisco