Kindly provide detailed answers forthe questions below asap. will greatly appreciate immediateresponse.
a. if a company has 10,000computers, and it experiences catastrophic failure only if 1/3 ofthe computers fail, what is the mttf for the system?
b. if it costs an extra $1000, percomputer, to double the mttf, would this be a good businessdecision? show your work.

For this assignment you have to write a c program that will take an infix expression as input and display the postfix expression of the input. after converting to the postfix expression, the program should evaluate the expression from the postfix and display the result. what should you submit? write all the code in a single file and upload the .c file. compliance with rules: ucf golden rules apply towards this assignment and submission. assignment rules mentioned in syllabus, are also applied in this submission. the ta and instructor can call any students for explaining any part of the code in order to better assess your authorship and for further clarification if needed. problem: we as humans write math expression in infix notation, e. g. 5 + 2 (the operators are written in-between the operands). in computer's language, however, it is preferred to have the operators on the right side of the operands, ie. 5 2 +. for more complex expressions that include parenthesis and multiple operators, a compiler has to convert the expression into postfix first and then evaluate the resulting postfix write a program that takes an "infix" expression as input, uses stacks to convert it into postfix expression, and finally evaluates it. it must support the following operations: + - / * ^ % ( example infix expression: (7-3)/(2+2) postfix expression: 7 3 2 2 result: rubric: 1) if code does not compile in eustis server: 0. 2) checking the balance of the parenthesis: 2 points 3) incorrect postfix expression per test case: -2 points 4) correct postfix but incorrect evaluation per test case: -i points 5) handling single digit inputs: maximum 11 points 6) handling two-digit inputs: 100 percent (if pass all test cases)

Which of the following is the definition of role-based access control ( rbac)? (a) ensures that data has not been accidentally or intentionally modified without authorization. (b) access control system where rights are assigned based on a user’s role rather than his or her identity. (c) ensures that private or sensitive information is not disclosed to unauthorized individuals. (d)the principle in which a subject—whether a user, an application, or another entity—should be given the minimum level of rights necessary to perform legitimate functions.

Match each word to its correct meaning. 1. quick launch an area that displays icons representing open applications 2. shortcut an icon used to represent an application, a file, or a folder 3. start menu an area on the taskbar where icons representing programs that are always running are displayed 4. system tray a list of programs that can be opened by clicking on their names or icons 5. taskbar an area on the taskbar from which frequently used programs can be opened pls. will get brainlist