Authentic Cisco Certification Exam 500-490 Questions Answers

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 WAN12.

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 WAN3. 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 path4.

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 providers4. Cloud first also enables the network to operate as a cloud-native WAN overlay, using software-defined automation and orchestration tools5.

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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The node that enables Cisco ISE to share contextual information on a device with Cisco Stealthwatch is the pXGrid Controller. The pXGrid Controller is a component of the ISE Policy Service Node (PSN) that facilitates the exchange of contextual data between ISE and other security products, such as Stealthwatch, via the Platform Exchange Grid (pxGrid) protocol. The pXGrid Controller acts as a broker that registers, authenticates, and authorizes pxGrid clients, and allows them to publish and subscribe to topics of interest. For example, Stealthwatch can subscribe to the Session Directory topic to obtain user and device information from ISE, and use it to enrich the network flow data and provide better visibility and security analytics. Stealthwatch can also publish topics, such as Rapid Threat Containment (RTC), to allow ISE to take mitigation actions on compromised endpoints, such as quarantine or re-authentication. References:

Cisco Identity Services Engine Administrator Guide, Release 2.4 - Manage Platform Exchange Grid Services [Cisco Identity Services Engine] - Cisco1

Deploying Cisco Stealthwatch 7.x with Cisco ISE 2.4 using pxGrid - Cisco Community2

Stealthwatch — Networking fun3

pxGrid in Depth > Sharing the Context | Cisco Press4

Cisco ISE is a security policy management platform that provides secure access to network resources. Cisco ISE functions as a policy decision point and enables enterprises to ensure compliance, enhance infrastructure security, and streamline service operations1. Two of the primary functions of Cisco ISE are:

Enforcing endpoint compliance with network security policies: Cisco ISE can assess the posture of all endpoints that access the network, including 802.1X environments, and enforce the appropriate policies based on the device type, identity, location, and other attributes. Cisco ISE can also provide comprehensive client provisioning measures to ensure that the endpoints are compliant with the network security policies before granting them access. Cisco ISE can also quarantine or remediate non-compliant endpoints to prevent potential threats or vulnerabilities12.

Providing information about every device that touches the network: Cisco ISE can gather real-time contextual information from networks, users, and devices, and use that information to make governance decisions and apply policies. Cisco ISE can also discover, profile, and monitor the endpoint devices on the network, and classify them according to their associated policies and identity groups. Cisco ISE can also leverage the pxGrid framework to share the contextual information with other security tools and platforms, and enhance the network visibility and security13.

The other options are not primary functions of Cisco ISE, because:

Allocating resources: Cisco ISE does not allocate resources to the endpoints or the network devices. Cisco ISE can assign services or access levels based on the policies, but not resources such as bandwidth, memory, or CPU1.

Enabling WAN deployment over any type of connection: Cisco ISE does not enable WAN deployment over any type of connection. Cisco ISE can support VPN access for remote endpoints, but not WAN deployment for the network infrastructure1.

Automatically enabling, disabling, or reducing allocated power to certain devices: Cisco ISE does not automatically enable, disable, or reduce allocated power to certain devices. Cisco ISE can control the access and authorization of the devices, but not their power consumption or management1.

Providing VPN access for any type of device: Cisco ISE does not provide VPN access for any type of device. Cisco ISE can authenticate and authorize the VPN access for the endpoints, but not provide the VPN service or connection itself. Cisco ISE relies on other network devices, such as VPN gateways or routers, to provide the VPN access1.

References:

1: Cisco Content Hub - Cisco ISE Features 2: Cisco ISE Posture Service Overview 3: [Cisco ISE Profiler Service Overview]