500-490 Practice Exam Questions with Answers Designing Cisco Enterprise Networks (ENDESIGN) exam Certification

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]

https://salesconnect.cisco.com/#/content-detail/10fb056b-4100-407b-a425-c48fdc30dd2a

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!

= Border nodes are the component of the SD-Access fabric that is responsible for communicating with networks that are external to the fabric. Border nodes serve as the gateway between the fabric domain and the network outside of the fabric. Border nodes are responsible for network virtualization inter-working and SGT propagation from the fabric to the rest of the network1. Border nodes also perform LISP Proxy Tunnel Router (PxTR) functions, which convert policy and reachability information, such as SGT and VRF information, from one domain to another2. Border nodes can connect to internal networks, such as data center or WAN, or external networks, such as internet or cloud3.

Edge nodes, control plane nodes, and intermediate nodes are not responsible for communicating with networks that are external to the fabric. Edge nodes are the access-layer switches where all of the endpoints reside. Edge nodes detect clients and register them with the control plane nodes. Edge nodes also providean anycast L3 gateway for the connected endpoints and perform encapsulation and de-encapsulation of data traffic4. Control plane nodes are the devices that run a host tracking database to map location information. Control plane nodes receive endpoint ID map registrations from edge and/or border nodes and resolve lookup requests from edge and/or border nodes to locate destination endpoint IDs5. Intermediate nodes are the devices that provide underlay connectivity between edge nodes and border nodes. Intermediate nodes do not participate in the fabric overlay and do not have any fabric roles6.

References :=

Role of Fabric Border Node & IS-IS protocol in Cisco SD-Access

Software Defined Access Network Fabric Roles - Study CCNP

Cisco SD-Access

SD-Access Fabric Troubleshooting Guide - Cisco

Cisco SD-Access Solution Design Guide (CVD) - Cisco

Cisco SD-Access Solution Design Guide (CVD) - Cisco

Cisco SD-Access Solution Design Guide (CVD) - Cisco

 The current time in enterprise networking history is characterized by the rapid pace of change in the network technologies, architectures, and services. Some of the factors that contribute to this change are:

The increasing demand for network performance, scalability, reliability, security, and agility from the business and end users.

The emergence of new network paradigms, such as software-defined networking (SDN), network function virtualization (NFV), cloud networking, and intent-based networking (IBN).

The proliferation of network devices, applications, and data sources, such as the Internet of Things (IoT), mobile devices, cloud services, big data, and artificial intelligence (AI).

The evolution of network standards, protocols, and best practices, such as IPv6, 5G, Wi-Fi 6, Ethernet, and network automation.

These factors create new opportunities and challenges for enterprise network designers, engineers, and administrators, who need to keep up with the latest trends and innovations, and adapt their network solutions to the changing business and technical requirements.

References:

Cisco Enterprise Network Architecture and Design, https://www.cisco.com/c/en/us/solutions/design-zone/networking-design-guides/enterprise-networking-design.html 1 : Enterprise Networking Explained: Types, Concepts & Trends, https://www.bmc.com/blogs/enterprise-networking/ 2 : What is enterprise networking?, https://www.cloudflare.com/learning/network-layer/enterprise-networking/ 3 : Enterprise WAN – A Brief History,https://blogs.juniper.net/en-us/enterprise-cloud-and-transformation/enterprise-wan-a-brief-history 4