According to the Network Bachelor article1, an IDS signature contains data used to identify an

attacker’s attempt to exploit a known vulnerability in both the operating system and applications.

This implies that statement B is true. According to the VMware NSX Documentation2, IDS/IPS Profiles

are used to group signatures, which can then be applied to select applications and traffic. This

implies that statement E is true. Statement A is false because users cannot upload their own IDS

signature definitions, they have to use the ones provided by VMware or Trustwave3. Statement C is

false because an IDS signature does not contain data used to identify the creator of known exploits

and vulnerabilities, only the exploits and vulnerabilities themselves. Statement D is false because IDS

signatures are classified into one of the following severity categories: Critical, High, Medium, Low, or

Informational1.

Reference: 3: Distributed IDS/IPS Settings and Signatures - VMware Docs 2: Distributed IDS/IPS -

VMware Docs 1: NSX-T: Exploring Distributed IDS - Network Bachelor

https://docs.vmware.com/en/VMware-SD-WAN/5.4/VMware-SD-WAN-Administration-Guide/GUID0BB81F8D-70EB-42D4-ABAF-F80C8F77A4CB.html