If you want to use Microsoft Hyper-V or Oracle VirtualBox on a Dell OptiPlex 755 system you will need to make/confirm four (4) specific BIOS setttings.
In the BIOS Setup [F2] change or confirm the following settings if you are receiving errors that the computer does not support virtualization.
- Performance -> Virtualization = On
- Performance -> VT for Direct I/O Access = On
- Performance -> Trusted Execution = Off
- Security -> Execute Disable = On
The Cisco Network Simulator, Router Simulator & Switch Simulator
The Boson NetSim Network Simulator is an application that simulates Cisco Systems’ networking hardware and software and is designed to aid the user in learning the Cisco IOS command structure.
This is the Dell “PC-on-a-Stick”: http://www.dell.com/us/business/p/cloud-connect/pd?~ck=anav
Use the Dell Cloud Client Manager server for $22 a year per device: https://www.cloudclientmanager.com/
Please see this documentation for the installation of VMware Tools on Cisco Unified Communications (UC) servers.