Deploying a wildcard certificate is one strategy to:

A.
Secure the certificate’s private key.

B.
Increase the certificate’s encryption key length.

C.
Extend the renewal date of the certificate.

D.
Reduce the certificate management burden.

Explanation:
A wildcard certificate is a public key certificate which can be used with multiple subdomains of a domain. This
saves money and reduces the management burden of managing multiple certificates, one for each subdomain.
A single Wildcard certificate for *.example.com, will secure all these domains:
payment.example.com
contact.example.com
login-secure.example.com
www.example.com
Because the wildcard only covers one level of subdomains (the asterisk doesn’t match full stops), these
domains would not be valid for the certificate:
test.login.example.com