To secure the company website, the webmaster suggests that the company purchase a secure certificate to encrypt all communications to and from the site.

A certificate is which type of secure token?

Answer: Software

Explanation:

Security certificate is defined as the assurance that maintain authenticity and intactness of a website or different sites. It is present in small sized data filed that establishes encryption and validation through verification of owner's identity.

As per the suggestion of Webmaster, who takes care of web-pages and web-servers, security certificate should be purchased to verify the transmission of message with encryption. Certificate in this case will be acting as software for providing security and operations to the websites.