Which of the following statements is true regarding encryption and content filtering appliances?

While an encryption appliance is dedicated to encryption, a content filtering appliance scans the content of what goes through it and filters out specific content or content types.

The disadvantage of using encryption and content filtering appliances is that they provide more choice of encryption methods but weaker encryption options.

The encryption and content filtering appliances modulate an analog carrier signal to encrypt digital information and demodulate the signal to decrypt the transmitted information.

These appliances speed up the network's service requests by recovering information from a client's earlier request.