API, Pandas and Web Scraping

1. What is the primary role of an API in software systems?

• 1. • To directly connect users to the server

• 1. • To act as a bridge between the client and server

• 1. • To replace the user interface

• 1. • To store data permanently

2. In the restaurant analogy for APIs, what does the waiter represent?

• 2. • The user interface

• 2. • The server

• 2. • The API

• 2. • The client

3. Which HTTP method is used to update an existing resource entirely?

• 3. • POST

• PATCH

• GET

• PUT

4. What does the HTTP status code 401 signify?

• 4. • Resource not found

• 4. • Client is not authorized

• 4. • Bad request format

• 4. • Server error

2. Which of the following is not a common challenge in web scraping?

• 2. • IP Blocking

• 2. • Complex Page Layouts

• 2. •  Lack of APIs

• 2. • Server Encryption

4. To generate summary statistics for numeric columns in a DataFrame, use the __________ function.

2. Which of the following is a valid way to create a DataFrame from a dictionary?

• 2. df = pd.DataFrame([10, 20, 30])

• 2.  df = pd.Series({"A": 1, "B": 2})

• 2. df = pd.DataFrame({"col1": [1, 2], "col2": [3, 4]})

• 2. df = pd.DataFrame.from_array()

1. The ________ method is used to create a new resource on the server.

4. The use of scraped data for commercial purposes without permission is ethical and legal.

• True

• False

1. What is the main difference between a Pandas Series and DataFrame?

• 1. Series is two-dimensional, DataFrame is one-dimensional

• 1. Series supports multiple data types, DataFrame does not

• 1.  Series is one-dimensional, DataFrame is two-dimensional

• 1.  DataFrame cannot have labeled rows