Back at it again. This time we’ll cover some common questions/answers you may encounter when asked about:

• Names, Bindings and Scopes
• Data Types

401. Names are also called _______.

• Identifiers

402. Why are names also called identifiers?

• Because they are used to identify a variable, a function, class or other program constructs.

403. Fortran I names had a maximum name length of _____.

• Six

404. COBOL names had a maximum length of ______.

• 30

405. Name two languages that don’t have a name length limit.

• Java and C#

406. How are scalar, arrays and hash names defined in Perl?

• $, @ and %

407. What do the @ and @@ symbols represent in Ruby?

• Class Instance and Class Object

408. What is a keyword?

• A word that’s special only in certain context

409. What is a reserved word?

• A special word that cannot be used as a user-defined name.

410. True or False? Keywords can be overwritten by user-defined names.

• True

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