__________ protocols operate in networking devices, such as a router or firewall, and will encrypt and compress all traffic going into the WAN and decrypt and uncompress traffic coming from the WAN.

To test whether a character is one of ‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, or ‘9’, use the _______ standard library function.

a. isnumber b. isnotalpha c. isnumeric d. isdigit e. all of the above

What is one specific way to reduce the redundancy of data being entered?

What will be an ideal response?