what is class 6 or class 4 High-Power PoE Standard

 Power over Ethernet (PoE) is a technology that combines both data signals and electrical power into a single Ethernet cable connection to enable remote powered device operation. By eliminating the need for separate data and power cables, PoE provides the advantages of simplicity and cost savings.

Cisco 2019 Software Defined Networking in Datacenter - ACI Solutions

Overview:
The Cisco Application Centric Infrastructure Fabric (ACI) fabric includes Cisco Nexus 9000 Series switches with the APIC to run in the leaf/spine ACI fabric mode. These switches form a “fat-tree” network by connecting each leaf node to each spine node; all other devices connect to the leaf nodes. The APIC manages the ACI fabric. The recommended minimum configuration for the APIC is a cluster of three replicated hosts. The APIC fabric management functions do not operate in the data path of the fabric.

Wireless Technology Will Evolve in 2020

1. Wi-Fi’s New 6 GHz Spectrum

“The 6 GHz band can help drive the next generation of Wi-Fi, and I am optimistic that we will be able to make it available for unlicensed use in 2019.” Said by FCC Chairman

https://blogs.arubanetworks.com/solutions/spectrum-looking-towards-the-future/

https://blogs.cisco.com/wireless/wi-fis-new-6ghz-spectrum-is-a-new-frontier

2. Passpoint

Wi-Fi CERTIFIED Passpoint® is an industry-wide solution to streamline network access in Wi-Fi hotspots and eliminate the need for users to find and authenticate a network each time they connect. In Wi-Fi networks that do not support Passpoint®, users must search for and choose a network, request the connection to the access point (AP), and re-enter authentication credentials each visit to gain access to a hotspot location, such as a restaurant, stadium, airport, or hotel. Passpoint automates the entire process, enabling a seamless connection between Wi-Fi hotspot networks and mobile devices, all while delivering enterprise-level security.

https://www.wi-fi.org/discover-wi-fi/passpoint

CCNA NEW EXAM 200-301 PATTERN

Exam overview
This exam tests your knowledge and skills related to:
Network fundamentals
Network access
IP connectivity
IP services
Security fundamentals
Automation and programmability
First date to test: February 24, 2020
This exam will be proctored by Pearson VUE.
More updates to follow up.
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200-301 CCNA
Certification: CCNA
Duration: 120 minutes