What is most commonly used for the goal of nonrepudiation in cryptography?

a. pki

b. block cipher

c. secret key

d. digital signature?

Which of these is NOT one of the main parts of an email? Header, subject, body, reply?

Mary wanted to show her son the process of volcano eruption. Which is the best way she can do so?

A typical, small, dry cell battery has a voltage of A. 6.0 volts. B. 1.0 volts. C. 12.0 volts. D. 1.5 volts.

What is the most widely used operating system for mobile devices?

Your company just bought a new subsidiary based in Des Moines, Iowa. Although your local operation already uses IPv6 for local networking and Internet access, the new subsidiary still uses IPv4 only, internally and to access the Internet.

The technology company DataGenetics suggests that 17.8% of all four-digit personal identification numbers, or PIN codes, have a repeating digits format such as 2525.

What is 'validation'?

Using the physical mail analogy, what part of an address on an envelope is most like the ip address?

Application programmers specialize in developing system software such as operating systems, device drivers, security modules, and communications software.? a. True b. False

Assume a program requires the execution of 50 x 106 (50e6) FP instructions, 110 x 106 (110e6) INT instructions, 80 x 106 (80e6) L/S instructions, and 16 x 106 (16e6) branch instructions.