Technology: Networking and Security

What is a PBX Phone System? Types of PBX Phone System. IP PBX and Hosted PBX phone system. How does the PBX system work?

What is ISDN, and how does it work? What are ISDN’s advantages and drawbacks? ISDN architecture and alternative explained.

What is Fully Qualified Domain Name (FQDN) mean and used for? What is Partially Qualified Domain Name (PQDN) mean and different from FQDN?

What is SSH, and where to use the secure shell? Understanding how to use secure shell network protocol between client and host.

What is Virtualization and How Does it Work? The definitive guide on Virtualization technology. Types of Virtualization explained.