Which of the following is an example of three-factor authentication?
A. Username, password, smart card
B. Password, smart card, PIN
C. Password, smart card, iris scan
D. Smart card, iris scan, keystroke dynamics
C Password, smart card, and iris scan - These are the only options that include something you know, something you have, and something you are.
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You are a systems administrator and you need to monitor the health of your production environment. You decide to do this using Cloud Watch, however you notice that you cannot see the health of every important metric in the default dash board. Which of the following metrics do you need to design a custom cloud watch metric for, when monitoring the health of your EC2 instances?
A. CPU Usage B. Memory usage C. Disk read operations D. Network in E. Estimated charges