PCPP1 Practice Test 3 — 10 Questions

Question 1

Which TWO of the following statements about the 'grid' geometry manager are correct?

Accepted Answer

It allows widgets to span across multiple rows or columns.. Grid allows for row/column spanning and absolute positioning within cells, but it is a row/column based system, not absolute XY.

Answer

It requires absolute pixel positioning.

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It only supports a single column layout.

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It cannot be mixed with the pack manager in the same parent.

Question 2

Which module must be imported to utilize Tkinter in a Python script?

Accepted Answer

import tkinter. The 'tkinter' module is the standard Python interface to the Tk GUI toolkit.

Answer

import gui

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from python import gui

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import tk

Question 3

Which status code indicates that a requested resource has been successfully created?

Accepted Answer

201 Created. 201 Created is the standard HTTP response for successful resource creation.

Answer

400 Bad Request

Answer

200 OK

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204 No Content

Question 4

You are using the pack() geometry manager and want to place a frame at the bottom of the window, ensuring it stays there even when other widgets are added. Which configuration is correct?

Accepted Answer

frame.pack(side='bottom', fill='x'). The 'side' parameter set to 'bottom' and 'fill' set to 'x' is the standard way to anchor a widget to the bottom edge.

Answer

frame.pack(anchor='s', expand=True)

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frame.pack(side='bottom', expand=False)

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difficulty

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frame.grid(row=99, column=0)

Question 5

When using the 'requests' library to perform a GET request, which parameter should be passed to the 'params' argument to include query string parameters in the URL?

Accepted Answer

A dictionary. The 'params' argument expects a dictionary of key-value pairs which the library automatically encodes and appends to the URL.

Answer

A tuple of values

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A single formatted string

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A list of strings

Question 6

Which widget is most suitable for displaying multi-line, editable text?

Accepted Answer

tk.Text(). The Text widget provides a flexible, multi-line text area.

Answer

tk.Listbox()

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tk.Entry()

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tk.Label()

Question 7

Which TWO of the following statements correctly describe the behavior of the Tkinter 'pack' geometry manager?

Accepted Answer

The 'side' parameter can be set to 'top', 'bottom', 'left', or 'right'.. Pack stacks widgets based on the 'side' argument and 'fill' determines how they occupy available space.

Answer

The manager automatically ignores the order in which pack() is called.

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Widgets are placed in a grid coordinate system.

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Widgets are positioned at exact X and Y coordinates.

Question 8

You are developing a multithreaded HTTP scraper. When using the 'requests' library inside 'threading.Thread' objects, what is the recommended practice for handling session persistence?

Accepted Answer

Initialize a new Session object inside each thread's run method. Requests.Session objects are not thread-safe in a way that prevents race conditions on connection pools. Each thread should ideally have its own session or a thread-safe connection pool mechanism.

Answer

Wrap the session object in a threading.Lock

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Share a single global Session object across all threads

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Disable connection pooling using 'pool_connections=0'

Question 9

In the context of the Factory pattern in Python, what is a typical benefit of using a registry-based approach instead of a large if-else block?

Accepted Answer

It enables easy extension by adding new products without changing the factory.. Registry-based factories allow for decoupled code where new classes can be registered without modifying the factory's core logic.

Answer

It guarantees thread safety without locks.

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It prevents the instantiation of abstract classes.

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It significantly reduces memory usage.

Question 10

When using the place() geometry manager, what is the purpose of 'relx' and 'rely'?

Accepted Answer

Relative position as a float from 0 to 1.. They represent the position of the widget as a fraction of the parent container's width and height (0.0 to 1.0).

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Relative font size.

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Relative pixel coordinates.

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Relative Z-index for layering.