Web Application Technologies and Django | Week 1
Course Name: Django for Everybody
Sub-course: Web Application Technologies and Django
Course Link: Django for Everybody
Sub-course Link: Web Application Technologies and Django
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Exploring the HyperText Transfer Protocol
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Practice Quiz
Q1. When a browser connects to a web server to retrieve a document, what default TCP/IP port is used?
142
119
80
25
420
Answer: 80
Q2. When a browser connects to a web server to retrieve a document, what command is sent to the server?
PUT
GET
POST
DELE
Answer: GET
Q3. What does the second “T” of HTTP stand for?
Transfer
Transpose
Transport
movemenT
Answer: Transfer
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Q4. Which of the following is NOT part of a Uniform Resource Locator:
Protocol
Document
Host
Operating System
Answer: Operating System
Q5. Which HTML tag typically generates a request to retrieve a document from the server when it is clicked?
a
div
h1
b
p
img
Answer: a
Q6. What standards organization publishes many of the documents that describe the protocols we use on the Internet?
6-Sigma
IRR
IETF
Educause
RIA
Answer: IETF
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Q7. Which of the HTTP headers does the browser look at to decide how to display the retrieved document?
Format
Location
Display-type
Content-type
ETAG
Content-length
Answer: Content-type
Q8. In Python, what is the difference between an open file and a socket?
A program can rewind a socket and start writing again at the beginning of the socket
A program writes to a socket, it can read its data back after closing the socket
When you open a file, you get a read and write handle to allow simultaneous operations
A socket can be simultaneously read and written
Answer: A socket can be simultaneously read and written
Q9. What must happen before a client can open a socket?
The client must create a local file with the same name as the socket
A server must be running that is listening for socket connections
The client must be in the same folder as the server
The server must allocate sufficient memory to handle any needed retransmissions
The client must be on the same system as the server
Answer: A server must be running that is listening for socket connections
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Q10. What port is used for Simple Mail Transfer Protocol (SMTP)?
80
119
25
420
142
Answer: 25
Q11. What port is used by default for Secure HTTP (https)?
443
119
25
142
80
Answer: 443
Q12. What is the topic of the Internet Engineering Task Force document RFC2616?
SMTP – Simple Mail Transfer Protocol
HTTP – HyperText Transfer Protocol
Message Data Types
FTP – File Transfer Protocol
POP – Post Office Protocol
Answer: HTTP – HyperText Transfer Protocol
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Q13. What is the topic of the Internet Engineering Task Force document RFC42?
Message Data Types
SMTP – Simple Mail Transfer Protocol
HTTP – HyperText Transfer Protocol
FTP – File Transfer Protocol
POP – Post Office Protocol
Answer: Message Data Types
Q14. Which of these Internet Engineering Task Force (IETF) documents described the “Internet Control Message Protocol”?
RFC815
RFC1224
RFC79
RFC5325
Answer: RFC792
Q15. What is the purpose of encode() in the socket1.py code:
To make sure that the web server properly recognizes the GET command
To check if there is any data ready to send
To convert the data to UTF-8 before sending
To break the data into packets for network transmission
Answer: To convert the data to UTF-8 before sending
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Q16. What can’t you see in the Browser Developer Mode for most browsers?
The HTTP response code (like 200 or 404) for each request
The request and response headers for retrieved documents
The code that runs in the server
The browser Document Object Model (DOM)
Answer: The code that runs in the server
Q17. In the sample server.py code, which function call actually waits for incoming socket connection requests?
decode()
bind()
recv()
socket()
listen()
Answer: listen()
Q18. In the sample server.py code, which function call will fail if another application is already using a port?
listen()
decode()
recv()
bind()
socket()
Answer: bind()
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Q19. Which Python library makes it very easy to make HTTP requests from Python?
decode
json
urllib
re
Answer: urllib
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