CompTIA
XK0-004 · Question #292
XK0-004 Question #292: Real Exam Question with Answer & Explanation
The correct answer is B: HOTP. The HOTP algorithm uses the HMAC algorithm to generate authentication codes. To do so, HOTP hashes a cryptographic key and a counter, which is the data here, twice to produce the code. Here, the cryptographic key is shared between the system and the device. The counter is separat
Question
When logging in, an administrator must use a temporary six-digit code that is displayed on a key fob. Which of the following has been implemented?
Options
- ABiometrics
- BHOTP
- CPKI
- DSoftware token
Explanation
The HOTP algorithm uses the HMAC algorithm to generate authentication codes. To do so, HOTP hashes a cryptographic key and a counter, which is the data here, twice to produce the code. Here, the cryptographic key is shared between the system and the device. The counter is separately maintained by both the token device and the system.
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