Which is an internet service? a.) antivirus b.) chat c.) firewall d.) router

Convert and simplify the following sentences to conjunctive normal form (cnf): (a) (p → (q → r)) → (p → (r → q)) (b) (p ∧ q) → (¬p ↔ q) (c) ((p → q) ∧ ¬q) → ¬p

Write an assembly program with the following specifications.a). in the main block, you should have two registers r4 and r5. they should be checked in an infinite loop. if r4 is greater than r5, then the greater subroutine will be called. if r4 is less than r5, then the less subroutine will be called. if r4 equals r5, then no operations will be done

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?