Which type of templates can be synchronized between a published and subscribed library?

The answer indicates that only OVF templates can be synchronized between a published and subscribed library. This is correct because Open Virtualization Format (OVF) is a standard for packaging and distributing virtual appliances or multiple virtual machines packaged together into a single file. OVF supports both the virtual machine's configuration files and its associated data, allowing for easy transport and deployment across different virtualization environments.

When using template synchronization between libraries, OVF is preferred due to its portability and ability to maintain the integrity of the virtual machine's configuration during the transfer. It also includes the necessary metadata that assists in managing virtual machines effectively within the vSphere framework.

Other formats such as ISO, VMDK, and VMX are either not designed for synchronization between libraries or do not encapsulate complete virtual machine configurations with the necessary metadata. ISO files are primarily used for distribution of operating system images or installation media, while VMDK files represent virtual disks and VMX files contain virtual machine settings but do not support the same level of transportability as OVF does.