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:
First for some basic definitions:
**A wildcard is a symbol such as * or ? which is used in some computing commands or searches in order to represent any character or range of characters.
The thing to remember is that “wild cards” as a rule are used to simplify matters.
For example , wildcards are used extensively in searching for files for example, so that it finds files with a similar name or the same extension.
** In computer networking, a wildcard certificate is a public key certificate which can be used with multiple subdomains of a domain. The principal use is for securing web sites with HTTPS, but there are also applications in many other fields.
Likewise, a “wild-card certificate” is used to simplify matters, using one certificate for multiple sub-domains of a domain
Things that a wild-card does not do thou is:
* Increase security. This ekliminates A and B
* Extend the renewal date. This eliminates C
So D is the only possible answer.
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
http://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
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