Modify the PhoneBook class to use a TreeMap instead of a HashMap.
What will be an ideal response?
```
private Map phoneMap =
new TreeMap ( ) ;
```
Does anything change when you execute the method printBook? Yes, the items in the phone book are output in alphabetical order based on the name.
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ID selectors:
a. Can be reused on other elements. b. Recommended selecting method. c. Make CSS longer and more complicated than necessary. d. None of the above. e. All of the above.
____ uses analog frequencies to encode one or more bits, by measuring the height of the signal.
A. Amplitude shift keying (ASK) B. Frequency shift keying (FSK) C. Pulse amplitude modulation (PAM) D. Phase shift keying (PSK)
A ________ is an extra copy of your database that you can use to protect yourself from the accidental loss of your database
Fill in the blank(s) with correct word
As insurance, you should ____________________ a layer so you can never complain that your original work has been ruined and so you can start over if you make mistakes.
Fill in the blank(s) with the appropriate word(s).