401 = Unauthorized (Bad credentials)
403 = Forbidden (Service refused, for insufficient permissions)

The Option 43 hexadecimal string is assembled as a sequence of the TLV values for the Option
43 suboption: Type + Length + Value. Type is always the suboption code 0xf1. Length is the number of controller management IP addresses times 4 in hex. Value is the IP address of the controller listed sequentially in hex.
On this question, there is 1 controller with management interface IP addresses 172.16.50.5/24.
The type is 0xf1. The length is 1 * 4 = 8 = 0x04. The mgmt IP addresses 172.16.50.5 translate to ac.10.32.05 (0xac103205). When the string is assembled, it yields f108c0a80a05c0a80a14. The Cisco IOS command that is added to the DHCP scope is: option 43 hex f104ac103205

VRF-lite does not support IGRP and ISIS.
VRF-lite does not support all MPLS-VRF functionality: label exchange, LDP adjacency, or labeled packets.
VRF-lite does not affect the packet switching rate.
The capability vrf-lite subcommand under router ospf should be used when configuring OSPF as the routing protocol between the PE and the CE.

Cisco Identity Services Engine (ISE) is a secure network access platform enabling increased management awareness, control, and consistency for users and devices accessing an organization's network. ISE is an integral and mandatory component of SD-Access for implementing network access control policy. ISE performs policy implementation, enabling dynamic mapping of users and devices to scalable groups, and simplifying end-to-end security policy enforcement. Within ISE, users and devices are shown in a simple and flexible interface.
ISE integrates with Cisco DNA Center by using Cisco Platform Exchange Grid (pxGrid) and REST APIs (Representational State Transfer Application Programming Interfaces) for endpoint event notifications and automation of policy configurations on ISE.