The answer is C) Availability.
Although the company is addressing scalability by adding more servers, the question is asking for security requirement. Therefore we need to choose one of the principles from CIA triad which includes confidentiality, integrity, and availability.
Integrity involves keeping the data accurate and confidentiality involves keeping the data between the sender and intended recipient(s). That being said, scalability and availability are the possible answers.
C) Availability is the best answer because it is part of the CIA triad.
Note: Another resource to look at for cyber security principles would be the Parkerian Hexad.
Answer:
Binary is made up of only 2 digits: a one and a zero. 1011 is eleven in our counting system.
So 10 in binary = 2 in our counting system.
Read the joke as follows. There are 2 types of people in the world: those who understand binary and those who do not.
I guess it's not really that funny, but computer programmers like it.