Using Python to Access Web Data Quiz Answers – Networking Funda

All Weeks Using Python to Access Web Data Quiz Answers

Using Python to Access Web Data Week 1 Quiz Answers

Quiz: Regular Expressions

Q1. Which of the following best describes “Regular Expressions”?

• The way Python handles and recovers from errors that would otherwise cause a traceback
• A way to calculate mathematical values paying attention to operator precedence
• A way to solve Algebra formulas for the unknown value
• A small programming language unto itself

Q2. Which of the following is the way we match the “start of a line” in a regular expression?

• correcr answer ^
• str.startswith()
• \linestart
• String.startsWith()
• variable[0:1]

Q3. What would the following mean in a regular expression? [a-z0-9]

• Match anything but a lowercase letter or digit
• Match a lowercase letter or a digit
• Match any number of lowercase letters followed by any number of digits
• Match an entire line as long as it is lowercase letters or digits
• Match any text that is surrounded by square braces

Q4. What is the type of the return value of the re.findall() method?

• A boolean
• A single character
• An integer
• A list of strings
• A string

Q5. What is the “wild card” character in a regular expression (i.e., the character that matches any character)?

• *
• +
• ?
• ^
• $
• correct answer .

Q6. What is the difference between the “+” and “*” character in regular expressions?

• The “+” matches at least one character and the “*” matches zero or more characters
• The “+” matches upper case characters and the “*” matches lowercase characters
• The “+” matches the beginning of a line and the “*” matches the end of a line
• The “+” matches the actual plus character and the “*” matches any character
• The “+” indicates “start of extraction” and the “*” indicates the “end of extraction”

Q7. What does the “[0-9]+” match in a regular expression?

• Any number of digits at the beginning of a line
• One or more digits
• Zero or more digits
• Any mathematical expression
• Several digits followed by a plus sign

Q8. What does the following Python sequence print out?

x = 'From: Using the : character'

y = re.findall('^F.+:', x)

print(y)

• :
• From:
• [‘From:’]
• [‘From: Using the :’]
• ^F.+:

Q9. What character do you add to the “+” or “*” to indicate that the match is to be done in a non-greedy manner?

• ++
• $
• **
• ^
• correct answer ?
• \g

Q10. Given the following line of text:

From [email protected] Sat Jan  5 09:14:16 2008

What would the regular expression ‘\S+?@\S+’ match?

• From
• [email protected]
• \@\
• marquard@uct
• [email protected]

Using Python to Access Web Data Week 2 Quiz Answers

Quiz: Networks and Sockets

Q1. What do we call it when a browser uses the HTTP protocol to load a file or page from a server and display it in the browser?

• SMTP
• DECNET
• The Request/Response Cycle
• Internet Protocol (IP)
• IMAP

Q2. What separates the HTTP headers from the body of the HTTP document?

• A blank line
• A less-than sign indicating the start of an HTML tag
• Four dashes
• X-End-Header: true

Q3. What must you do in Python before opening a socket?

• import tcp-socket
• open socket
• import tcp
• _socket = true
• import socket

Q4. In a client-server application on the web using sockets, which must come up first?

• server
• client
• it does not matter

Q5. Which of the following is most like an open socket in an application?

• An “in-progress” phone conversation
• Fiber optic cables
• The wheels on an automobile
• The chain on a bicycle
• The ringer on a telephone

Q6. What does the “H” of HTTP stand for?

• HyperText
• wHolsitic
• Simple
• Hyperspeed
• Manual

Q7. What is an important aspect of an Application Layer protocol like HTTP?

• How long do we wait before packets are retransmitted?
• What is the IP address for a domain like www.dr-chuck.com?
• How much memory does the server need to serve requests?
• Which application talks first? The client or server?

Q8. What are the three parts of this URL (Uniform Resource Locator)?

http://www.dr-chuck.com/page1.htm

• Page, offset, and count
• Protocol, document, and offset
• Protocol, host, and document
• Host, offset, and page
• Document, page, and protocol

Q9. When you click on an anchor tag in a web page like below, what HTTP request is sent to the server?

<p>Please click <a href="page1.htm">here</a>.</p> 

• GET
• POST
• PUT
• DELETE
• INFO

Q10. Which organization publishes Internet Protocol Standards?

• LDAP
• SCORM
• IMS
• SIFA
• IETF

Using Python to Access Web Data Week 3 Quiz Answers

Quiz :Reading Web Data From Python

Q1. Which of the following Python data structures is most similar to the value returned in this line of Python:

x = urllib.request.urlopen('http://data.pr4e.org/romeo.txt')1 point

• list
• regular expression
• file handle
• socket
• dictionary

Q2. In this Python code, which line actually reads the data?

import socket

mysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

mysock.connect(('data.pr4e.org', 80))

cmd = 'GET http://data.pr4e.org/romeo.txt HTTP/1.0\n\n'.encode()

mysock.send(cmd) 

while True:    

data = mysock.recv(512)    

if (len(data) < 1):       

break   

print(data.decode())

mysock.close()

• mysock.recv()
• socket.socket()
• mysock.close()
• mysock.connect()
• mysock.send()

Q3. Which of the following regular expressions would extract the URL from this line of HTML:

<p>Please click <a href="http://www.dr-chuck.com">here</a></p>

• href=”(.+)”
• href=”.+”
• http://.*
• <.*>

Q4. In this Python code, which line is most like the open() call to read a file:

import socket 

mysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

mysock.connect(('data.pr4e.org', 80))

cmd = 'GET http://data.pr4e.org/romeo.txt HTTP/1.0\n\n'.encode()

mysock.send(cmd) 

while True:    

data = mysock.recv(512)   

if (len(data) < 1):        

break   

print(data.decode())

mysock.close()

• mysock.connect()
• import socket
• mysock.recv()
• mysock.send()
• socket.socket()

Q5. Which HTTP header tells the browser the kind of document that is being returned?

• HTML-Document:
• Content-Type:
• Metadata:
• Document-Type:
• ETag:

Q6. What should you check before scraping a web site?

• That the web site supports the HTTP GET command
• That the web site returns HTML for all pages
• That the web site only has links within the same site
• That the web site allows scraping

Q7. What is the purpose of the BeautifulSoup Python library?

• It allows a web site to choose an attractive skin
• It optimizes files that are retrieved many times
• It repairs and parses HTML to make it easier for a program to understand
• It builds word clouds from web pages
• It animates web operations to make them more attractive

Q8. What ends up in the “x” variable in the following code:

html = urllib.request.urlopen(url).read()

soup = BeautifulSoup(html, 'html.parser')

x = soup('a')

• A list of all the anchor tags (<a..) in the HTML from the URL
• True if there were any anchor tags in the HTML from the URL
• All of the externally linked CSS files in the HTML from the URL
• All of the paragraphs of the HTML from the URL

Q9. What is the most common Unicode encoding when moving data between systems?

• UTF-64
• UTF-8
• UTF-16
• UTF-32
• UTF-128

Q10. What is the ASCII character that is associated with the decimal value 42?

• !
• ^
• correct answer *
• +
• /

Q11. What word does the following sequence of numbers represent in ASCII:

108, 105, 110, 101

• lost
• tree
• ping
• func
• line

Q12. How are strings stored internally in Python 3?

• EBCDIC
• ASCII
• Byte Code
• Unicode
• UTF-8

Q13. When reading data across the network (i.e. from a URL) in Python 3, what method must be used to convert it to the internal format used by strings?

• trim()
• upper()
• decode()
• encode()
• find()

Using Python to Access Web Data Week 4 Quiz Answers

Quiz: eXtensible Markup Language

Q1. What is the name of the Python 2.x library to parse XML data?

• xml.json
• xml.etree.ElementTree
• xml-misc
• xml2

Q2. Which of the following are not commonly used serialization formats?

• Dictionaries
• XML
• JSON
• HTTP
• TCP

Q3. In this XML, which are the “simple elements”?

<people>   

<person>   

<name>Chuck</name>       

<phone>303 4456</phone>    

</person>    

<person>      

<name>Noah</name>       

<phone>622 7421</phone>    

</person></people>

• person
• name
• people
• Noah
• phone

Q4. In the following XML, which are attributes?

<person>  

<name>Chuck</name>  

<phone type="intl">     

+1 734 303 4456  

</phone>  

<email hide="yes" />

</person>

• name
• hide
• type
• email
• person

Q5. In the following XML, which node is the parent node of node e

<a>  

<b>X</b>  

<c>    

<d>Y</d>   

<e>Z</e>  

</c>

</a>

• e
• b
• c
• a

Q6. Looking at the following XML, what text value would we find at path “/a/c/e”

<a>  

<b>X</b>  

<c>    

<d>Y</d>    

<e>Z</e>  

</c>

</a>

• b
• Z
• e
• Y
• a

Q7. What is the purpose of XML Schema?

• To establish a contract as to what is valid XML
• To transfer XML data reliably during network outages
• To compute SHA1 checksums on data to make sure it is not modified in transit
• A Python program to tranform XML files

Q8. For this XML Schema:

<xs:complexType name=”person”>  

<xs:sequence>    

<xs:element name="lastname" type="xs:string"/>    

<xs:element name="age" type="xs:integer"/>    

<xs:element name="dateborn" type="xs:date"/>  

</xs:sequence>

</xs:complexType>

And this XML,

<person>   

<lastname>Severance</lastname>   

<Age>17</Age>   

<dateborn>2001-04-17</dateborn>

</person> 

Which tag is incorrect?

• Age
• lastname
• age
• person
• dateborn

Q9. What does the “Z” mean in this representation of a time:12002-05-30T09:30:10Z

• This time is in the UTC timezone
• The hours value is in the range 0-12
• The local timezone for this time is New Zealand
• This time is Daylight Savings Time

Q10. Which of the following dates is in ISO8601 format?

• 2002-May-30
• May 30, 2002
• 2002-05-30T09:30:10Z
• 05/30/2002

Using Python to Access Web Data Week 5 Quiz Answers

Quiz: REST, JSON, and APIs

Q1. Who is credited with the REST approach to web services?

• Vint Cerf
• Bjarne Stroustrup
• Roy Fielding
• Leonard Klienrock
• Daphne Koller

Q2. What Python library do you have to import to parse and handle JSON?

• import re
• ElementTree
• import json
• BeautifulSoup

Q3. Which of the following is a web services approach used by the Twitter API?

• CORBA
• SOAP
• REST
• XML-RPC

Q4. What kind of variable will you get in Python when the following JSON is parsed:

{ "id" : "001", 

 "x" : "2",  

"name" : "Chuck"

}

• A list of tuples
• A tuple with three items
• A dictionary with three key / value pairs
• A list with three items
• A list with six items

Q5. Which of the following is not true about the service-oriented approach?

• An application makes use of the services provided by other applications
• Standards are developed where many pairs of applications must work together
• An application runs together all in one place
• Web services and APIs are used to transfer data between applications

Q6. Which of these two web service approaches is preferred in most modern service-oriented applications?

• SOAP – Simple Object Access Protocol
• REST – Representational state transfer

Q7. What library call do you make to append properly encoded parameters to the end of a URL like the following:

//maps.googleapis.com/maps/api/geocode/json?sensor=false&address=Ann+Arbor%2C+MI

• urllib.parse.urlencode()
• re.match()
• urllib.urlcat()
• re.encode()

Q8. What happens when you exceed the Google geocoding API rate limit?

• The API starts to perform very slowly
• You cannot use the API for 24 hours
• You cannot use the API until you respond to an email that contains a survey question
• Your application starts to perform very slowly

Q9. What protocol does Twitter use to protect its API?

• SOAP
• SHA1-MD5
• PKI-HMAC
• Java Web Tokens
• OAuth
• WS*Security

Q10. What header does Twitter use to tell you how many more API requests you can make before you will be rate-limited?

• content-type
• x-rate-limit-remaining
• x-max-requests
• x-request-count-down

Get All Course Quiz Answers of Python for Everybody Specialization

Course 01: Programming for Everybody (Getting Started with Python)

Course 02: Python Data Structures

Course 03: Using Python to Access Web Data

Course 04: Using Databases with Python

Course 05: Capstone: Retrieving, Processing, and Visualizing Data with Python