Explanation Explanation The following are the prerequisites to integrate Active Directory with Cisco ISE. + Use the Network Time Protocol (NTP) server settings to synchronize the time between the Cisco ISE server and Active Directory. You can configure NTP settings from Cisco ISE CLI. + If your Active Directory structure has multidomain forest or is divided into multiple forests, ensure that trust relationships exist between the domain to which Cisco ISE is connected and the other domains that have user and machine information to which you need access. For more information on establishing trust relationships, refer to Microsoft Active Directory documentation. + You must have at least one global catalog server operational and accessible by Cisco ISE, in the domain to which you are joining Cisco ISE. Reference: https://www.cisco.com/c/en/us/td/docs/security/ise/2-0/ise_active_directory_integration/ b_ISE_AD_integration_2x.html#reference_8DC463597A644A5C9CF5D582B77BB24F Explanation The following are the prerequisites to integrate Active Directory with Cisco ISE.
+ Use the Network Time Protocol (NTP) server settings to synchronize the time between the Cisco ISE server and Active Directory. You can configure NTP settings from Cisco ISE CLI.
+ If your Active Directory structure has multidomain forest or is divided into multiple forests, ensure that trust relationships exist between the domain to which Cisco ISE is connected and the other domains that have user and machine information to which you need access. For more information on establishing trust relationships, refer to Microsoft Active Directory documentation.
+ You must have at least one global catalog server operational and accessible by Cisco ISE, in the domain to which you are joining Cisco ISE.
Reference:
Explanation Explanation The following are the prerequisites to integrate Active Directory with Cisco ISE. + Use the Network Time Protocol (NTP) server settings to synchronize the time between the Cisco ISE server and Active Directory. You can configure NTP settings from Cisco ISE CLI. + If your Active Directory structure has multidomain forest or is divided into multiple forests, ensure that trust relationships exist between the domain to which Cisco ISE is connected and the other domains that have user and machine information to which you need access. For more information on establishing trust relationships, refer to Microsoft Active Directory documentation. + You must have at least one global catalog server operational and accessible by Cisco ISE, in the domain to which you are joining Cisco ISE. Reference: https://www.cisco.com/c/en/us/td/docs/security/ise/2-0/ise_active_directory_integration/ b_ISE_AD_integration_2x.html#reference_8DC463597A644A5C9CF5D582B77BB24F

Southbound APIs are used to communicate between the SDN Controller and the switches and routers of the network. They can be open-source or proprietary. They facilitate control over the network and enable the SDN Controller to dynamically make changes according to real-time demands and needs. OpenFlow and OpFlex are two examples of southbound APIs. OpenFlow, which was developed by the Open Networking Foundation (ONF), is the first and probably most well-known southbound interface. OpenFlow defines the way the SDN Controller should interact with the forwarding plane to make adjustments to the network, so it can better adapt to changing business requirements. With OpenFlow, entries can be added and removed to the internal flow-table of switches and routers to make the network more responsive to real-time traffic demands.
OpFlex, which was proposed by Cisco, is another southbound interface that uses a declarative model to communicate policies and state between the controller and the network devices. OpFlex allows the network devices to retain some intelligence and autonomy, while still being managed by the controller. OpFlex is designed to be flexible and extensible, and can support different types of network devices and services.
Services running over the network, external application APIs, and applications running over the network are not southbound APIs, as they do not directly communicate between the controller and the network devices.
Therefore, the correct answer is B and E. References :=
Some possible references are:
* What are SDN Southbound APIs? - Where they are used. - SDxCentral
* SDN North-bound and South-bound APIs and Interfaces
* Cisco Application Centric Infrastructure Fundamentals

Explanation

Device sensor is a feature of access devices. It allows to collect information about connected endpoints. Mostly, information collected by Device Sensor can come from the following protocols:
+ Cisco Discovery Protocol (CDP)
+ Link Layer Discovery Protocol (LLDP)
+ Dynamic Host Configuration Protocol (DHCP)
Device sensor is a feature of access devices. It allows to collect information about connected endpoints. Mostly, information collected by Device Sensor can come from the following protocols:
+ Cisco Discovery Protocol (CDP)
+ Link Layer Discovery Protocol (LLDP)
+ Dynamic Host Configuration Protocol (DHCP)
Reference:
Device sensor is a feature of access devices. It allows to collect information about connected endpoints. Mostly, information collected by Device Sensor can come from the following protocols:
+ Cisco Discovery Protocol (CDP)
+ Link Layer Discovery Protocol (LLDP)
+ Dynamic Host Configuration Protocol (DHCP)