Introduction to Data - Multiple Choice Quiz

Overview

Questions

• What does Fr[ea]nc[eh] match?

Objectives

• Test knowledge of use of regular expressions in searches

Multiple Choice Quiz

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This multiple choice quiz is designed to embed the regex knowledge you learned during this module. We recommend you work through it someone after class (within a week or so). Answers are on the answer sheet.

Q1. What is the special character that matches zero or more characters

• 1. ^
• 2. #
• 3. *

Q2. Which of the following matches any space, tab, or newline?

• 1. \s
• 2. \b
• 3. $

Q3. How do you match the string Foobar appearing at the beginning of a line?

• 1. $Foobar
• 2. ^Foobar
• 3. #Foobar

Q4. How do you match the word Foobar appearing at the beginning of a line?

• 1. ^Foobar\d
• 2. ^Foobar\b
• 3. ^Foobar\w

Q5. What does the regular expression [a-z] match?

• 1. The characters a and z only
• 2. All characters between the ranges a to z and A to Z
• 3. All characters between the range a to z

Q6. Which of these will match the strings revolution, revolutionary, and revolutionaries?

• 1. revolution[a-z]?
• 2. revolution[a-z]*
• 3. revolution[a-z]+

Q7. Which of these will match the strings revolution, Revolution, and their plural variants only?

• 1. [rR]evolution[s]+
• 2. revolution[s]?
• 3. [rR]evolution[s]?

Q8. What regular expression matches the strings dog or cat?

• 1. dog|cat
• 2. dog,cat
• 3. dog | cat

Q9. What regular expression matches the whole words dog or cat?

• 1. \bdog|cat\b
• 2. \bdog\b | \bcat\b
• 3. \bdog\b|\bcat\b

Q10. What do we put after a character to match strings where that character appears 2 to 4 times in sequence?

• 1. {2,4}
• 2. {2-4}
• 3. [2,4]

Q11. The regular expression \d{4} will match what?

• 1. Any four character sequence?
• 2. Any four digit sequence?
• 3. The letter d four times?

Q12. If brackets are used to define a group, what would match the regular expression (,\s[0-9]{1,4}){4},\s[0-9]{1,3}\.[0-9]?

• 1. , 135, 1155, 915, 513, 18.8
• 2. , 135, 11557, 915, 513, 18.8
• 3. , 135, 1155, 915, 513, 188

Key Points

• Regular expressions reference guide