Which of the following statements is true?
A) Interfaces may not be generic in Java
B) The keyword implements cannot be used do describe a type parameter that implements an interface
C) a generic class may not have more than one type parameter in its declaration
D) None of the above statements are true.
B) The keyword implements cannot be used do describe a type parameter that implements an interface
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To check if a string s contains the suffix "Java", you may write
``` a. if (s.endsWith("Java")) ... b. if (s.lastIndexOf("Java") >= 0) ... c. if (s.substring(s.length() - 4).equals("Java")) ... d. if (s.substring(s.length() - 5).equals("Java")) ... e. if (s.charAt(s.length() - 4) == 'J' && s.charAt(s.length() - 3) == 'a' && s.charAt(s.length() - 2) == 'v' && s.charAt(s.length() - 1) == 'a') ... ```
On a network, users with Read/Write permission can edit and delete files
Indicate whether the statement is true or false
Input controls include all of the following except
A. check digits B. limit check C. spooling check D. missing data check
A company is implementing enhanced user authentication for system administrators accessing the company's confidential servers. Which of the following would be the BEST example of twofactor authentication?
A. ID badge and keys B. Password and key fob C. fingerprint scanner and retina scan D. Username and password