PCPP-32-101 Exam Practice Questions prepared by Python Institute Professionals
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Python Institute PCPP-32-101 (PCPP1) exam is a certification program designed for individuals who want to demonstrate their expertise in Python programming. PCPP-32-101 exam evaluates the candidate's ability to write and maintain Python code, as well as their knowledge of the programming language's features and syntax. It covers a broad range of topics, including data types, control structures, functions, modules, and object-oriented programming concepts.
The PCPP1 certification exam is an online, proctored exam that consists of 40 multiple-choice questions. Candidates have 75 minutes to complete the exam, and they must score at least 70% to pass. PCPP-32-101 exam is available in English, Spanish, Portuguese, French, German, and Italian, making it accessible to a global audience. PCPP1 - Certified Professional in Python Programming 1 certification is valid for a lifetime, and there are no prerequisites to take the exam. Obtaining the PCPP1 certification is an excellent way to demonstrate your proficiency in Python programming and can help you advance in your career as a Python developer.
Python Institute PCPP-32-101 certification exam is recognized worldwide as a leading certification for Python programming. PCPP1 - Certified Professional in Python Programming 1 certification is designed to validate an individual's skills in Python programming and to provide employers with a reliable measure of a candidate's proficiency in the language.
NEW QUESTION # 18
Select the true statements about the connection-oriented and connectionless types of communication. (Select two answers.)
- A. Using walkie-talkies is an example of a connection-oriented communication
- B. Connectionless communications are usually built on top of TCP
- C. In the context of TCP/IP networks, the communication side that initiates a connection is called the client, whereas the side that answers the client is called the server
- D. A phone call is an example of a connection-oriented communication
Answer: C,D
Explanation:
Explanation
In the context of TCP/IP networks, the communication side that initiates a connection is called the client, whereas the side that answers the client is called the server.
This statement is true because TCP/IP networks use a client-server model to establish connection-oriented communications. The client is the device or application that requests a service or resource from another device or application, which is called the server. The server responds to the client's request and provides the service or resource.For example, when you browse a website using a web browser, the browser acts as a client and sends a request to the web server that hosts the website. The web server acts as a server and sends back the requested web page to the browser1.
Connectionless communications are usually built on top of TCP.
This statement is false because TCP (Transmission Control Protocol) is a connection-oriented protocol that requires establishing and terminating a connection before and after sending data. Connectionless communications are usually built on top of UDP (User Datagram Protocol), which is a connectionless protocol that does not require any connection setup or teardown. UDP simply sends data packets to the destination without checking if they are received or not2.
Using walkie-talkies is an example of a connection-oriented communication.
This statement is false because using walkie-talkies is an example of a connectionless communication.
Walkie-talkies do not establish a dedicated channel or connection between the sender and receiver before transmitting data. They simply broadcast data over a shared frequency without ensuring that the receiver is ready or available to receive it. The sender does not know if the receiver has received the data or not3.
A phone call is an example of a connection-oriented communication.
This statement is true because a phone call is an example of a connection-oriented communication. A phone call requires setting up a circuit or connection between the caller and callee before exchanging voice data. The caller and callee can hear each other's voice and know if they are connected or not. The phone call also requires terminating the connection when the conversation is over4.
References:
1: https://www.techtarget.com/searchnetworking/definition/client-server 2:
https://www.javatpoint.com/connection-oriented-vs-connectionless-service 3:
https://en.wikipedia.org/wiki/Walkie-talkie 4: https://en.wikipedia.org/wiki/Telephone_call A is true because in the context of TCP/IP networks, the communication side that initiates a connection is called the client, and the side that answers the client is called the server. This is the basis for establishing a connection-oriented communication.
D is true because a phone call is an example of a connection-oriented communication. Like TCP/IP, a phone call establishes a connection between two devices (in this case, two phones) before communication can occur.
A is true because in the context of TCP/IP networks, the communication side that initiates a connection is called the client, and the side that answers the client is called the server. This is the basis for establishing a connection-oriented communication.
D is true because a phone call is an example of a connection-oriented communication. Like TCP/IP, a phone call establishes a connection between two devices (in this case, two phones) before communication can occur.
B is false because connectionless communications are usually built on top of UDP, not TCP. UDP is a connectionless protocol that does not establish a connection before sending data.
C is false because using walkie-talkies is an example of a connectionless communication. Walkie-talkies do not establish a connection before communication begins, and messages are simply broadcasted to all devices within range.
Here is a sample code in Python using the socket module to create a TCP server and client to demonstrate the connection-oriented communication:
Server-side code:
importsocket
HOST ='127.0.0.1'
PORT =8080
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind((HOST, PORT))
s.listen()
conn, addr = s.accept()
with conn:
print('Connected by', addr)
whileTrue:
data = conn.recv(1024)
ifnotdata:
break
conn.sendall(data)
Client-side code:
importsocket
HOST ='127.0.0.1'
PORT =8080
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.connect((HOST, PORT))
s.sendall(b'Hello, world')
data = s.recv(1024)
print('Received',repr(data))
The server listens for incoming connections on port 8080, and when a connection is established, it prints the address of the client that has connected. The server then continuously receives data from the client and sends it back to the client until the connection is closed.
The client establishes a connection with the server and sends the message "Hello, world" encoded as bytes. It then waits for a response from the server and prints the data it receives.
NEW QUESTION # 19
What will happen if the mamwindow is too small to fit all its widgets?
- A. An exception will be raised.
- B. The window will be expanded.
- C. The widgets will be scaled down to fit the window's size.
- D. Some widgets may be invisible
Answer: D
Explanation:
Explanation
If the main window is too small to fit all its widgets, some widgets may be invisible. So, the correct answer is Option A.
When a window is not large enough to display all of its content, some widgets may be partially or completely hidden. The window will not automatically expand to fit all of its content, and no exception will be raised. The widgets will not be automatically scaled down to fit the window's size.
If the main window is too small to fit all its widgets, some of the widgets may not be visible or may be partially visible. This is because the main window has a fixed size, and if there are more widgets than can fit within that size, some of them will be outside the visible area of the window.
To avoid this issue, you can use layout managers such as grid, pack, or place to dynamically adjust the size and position of the widgets as the window changes size. This will ensure that all the widgets remain visible and properly arranged regardless of the size of the main window.
References:
* https://www.tkdocs.com/tutorial/widgets.html#managers
* https://www.geeksforgeeks.org/python-tkinter-widgets/
* https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/introduction.html
NEW QUESTION # 20
Select the true statements about the sqlite3 module. (Select two answers.)
- A. The fetchalt method returns None when no rows are available
- B. The fetchone method returns None when no rows are available
- C. The execute method allows you to perform several queries at once
- D. The execute method is provided by the Cursor class
Answer: B,D
Explanation:
Explanation
The execute method is provided by the Cursor class
This statement is true because the execute method is one of the methods of the Cursor class in the sqlite3 module. The Cursor class represents an object that can execute SQL statements and fetch results from a database connection. The execute method takes an SQL query as an argument and executes it against the database. For example, cur = conn.cursor (); cur.execute ("SELECT * FROM table") creates and executes a cursor object that selects all rows from a table.
The fetchone method returns None when no rows are available
This statement is true because the fetchone method is another method of the Cursor class in the sqlite3 module.
The fetchone method fetches the next row of a query result set and returns it as a single tuple or None if no more rows are available. For example, row = cur.fetchone () fetches and returns one row from the cursor object or None if there are no more rows.
NEW QUESTION # 21
Which one of the following methods allows you to debug an XML tree in the xml.etree ELementTree module?
- A. debug
- B. log
- C. parse
- D. dump
Answer: D
Explanation:
Explanation
The dump() method in the xml.etree.ElementTree module allows you to output a debug representation of an XML tree to a file or standard output. This method is useful for analyzing the structure of the tree and tracking down errors.
NEW QUESTION # 22
What is true about type in the object-oriented programming sense?
- A. It is the bottommost type that any object can inherit from.
- B. It is an object used to instantiate a class
- C. It is the topmost type that any class can inherit from
- D. It is a built-in method that allows enumeration of composite objects
Answer: C
Explanation:
Explanation
In Python, type is the built-in metaclass that serves as the base class for all new-style classes. All new-style classes in Python, including built-in types like int and str, are instances of the type metaclass and inherit from it.
NEW QUESTION # 23
Select the true statements about sockets. (Select two answers)
- A. A socket is a connection point that enables a two-way communication between programs running in a network.
- B. A socket is always the secure means by which computers on a network can safely communicate, without the risk of exposure to an attack
- C. A socket can be used to establish a communication endpoint for processes running on the same or different machines.
- D. A socket is a connection point that enables a one-way communication only between remote processes
Answer: A,C
Explanation:
Explanation
A socket is a connection point that enables a two-way communication between programs running in a network.
This statement is true because a socket is a software structure that serves as an endpoint for sending and receiving data across a network. A socket is defined by an application programming interface (API) for the networking architecture, such as TCP/IP. A socket can be used to establish a communication channel between two programs running on the same or different network nodes12.
A socket is always the secure means by which computers on a network can safely communicate, without the risk of exposure to an attack.
This statement is false because a socket by itself does not provide any security or encryption for the data transmitted over the network. A socket can be vulnerable to various types of attacks, such as eavesdropping, spoofing, hijacking, or denial-of-service. To ensure secure communication, a socket can use additional protocols or mechanisms, such as SSL/TLS, SSH, VPN, or firewall3.
A socket is a connection point that enables a one-way communication only between remote processes.
This statement is false because a socket can enable both one-way and two-way communication between processes running on the same or different network nodes. A socket can be used for connection-oriented or connectionless communication, depending on the type of protocol used. For example, TCP is a connection-oriented protocol that provides reliable and bidirectional data transfer, while UDP is a connectionless protocol that provides unreliable and unidirectional data transfer12.
A socket can be used to establish a communication endpoint for processes running on the same or different machines.
This statement is true because a socket can be used for inter-process communication (IPC) within a single machine or across different machines on a network. A socket can use different types of addresses to identify the processes involved in the communication, such as IP address and port number for network sockets, or file name or path for Unix domain sockets12.
References:
1: https://en.wikipedia.org/wiki/Network_socket 2:
https://www.geeksforgeeks.org/socket-in-computer-network/ 3:
https://www.tutorialspoint.com/what-is-a-network-socket-computer-networks
NEW QUESTION # 24
What isa___traceback___?
(Select two answers )
- A. An attribute that holds interesting information that is particularly useful when the programmer wants to store exception details in other objects
- B. An attribute owned by every exception object
- C. A special method delivered by the traceback module to retrieve a full list of strings describing thetraceback
- D. An attribute that is added to every object when the traceback module is imported
Answer: A,B
Explanation:
Explanation
The correct answers are A. An attribute owned by every exception object and D. An attribute that holds interesting information that is particularly useful when the programmer wants to store exception details in other objects. A traceback is an attribute of an exception object that contains a stack trace representing the call stack at the point where the exception was raised. The traceback attribute holds information about the sequence of function calls that led to the exception, which can be useful for debugging and error reporting.
NEW QUESTION # 25
The following snippet represents one of the OOP pillars Which one is that?
- A. Serialization
- B. Encapsulation
- C. Polymorphism
- D. Inheritance
Answer: B
Explanation:
Explanation
The given code snippet demonstrates the concept of encapsulation in object-oriented programming.
Encapsulation refers to the practice of keeping the internal state and behavior of an object hidden from the outside world and providing a public interface for interacting with the object. In the given code snippet, the __init__ and get_balance methods provide a public interface for interacting with instances of the BankAccount class, while the __balance attribute is kept hidden from the outside world by using a double underscore prefix.
NEW QUESTION # 26
Which of the following constants will be used if you do riot define the quoting argument in the writer method provided by the csv module?
- A. svQUOTE_ALL
- B. csv.QUOTE_MINIMAL
- C. csv.QUOTE_NONE
- D. csv.QUOTE_NONNUMERIC
Answer: B
Explanation:
Explanation
If you do not define the quoting argument in the writer method provided by the csv module, the default quoting behavior is set to QUOTE_MINIMAL. This means that fields containing special characters such as the delimiter or newline character will be quoted, while fields that do not contain special characters will not be quoted.
NEW QUESTION # 27
In the JSON processing context, the term serialization:
- A. names a process in which a JSON string is turned into Python data.
- B. names a process in which a JSON string is remodeled and transformed into a new JSON string
- C. refers to nothing, because there is no such thing as JSON serialization.
- D. names a process in which Python data is turned into a JSON string.
Answer: D
Explanation:
Explanation
In the JSON processing context, the term serialization: A. names a process in which Python data is turned into a JSON string.
Serialization refers to the process of converting a data object, such as a Python object, into a format that can be easily transferred over a network or stored in a file. In the case of JSON, serialization refers to converting Python data into a string representation using the JSON format. This string can be sent over a network or stored as a file, and later deserialized back into the original Python data object.
NEW QUESTION # 28
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)
- A. #FF0000
- B. #000000
- C. #0000FF
- D. #FFFFFF
Answer: A,C
NEW QUESTION # 29
Select the true statement about the___name___attribute.
- A. __name___is a special attribute, which is inherent for classes and it contains information about the class to which a class instance belongs.
- B. ___name is a special attribute, which is inherent for both classes and instances, and it contains a dictionary of object attributes.
- C. ___name___is a special attribute, which is inherent for both classes and instances, and it contains information about the class to which a class instance belongs.
- D. __name___is a special attribute, which is inherent for classes, and it contains the name of a class.
Answer: D
Explanation:
Explanation
The true statement about the __name__ attribute is D. name is a special attribute, which is inherent for classes, and it contains the name of a class. The __name__ attribute is a special attribute of classes that contains the name of the class as a string.
The __name__ attribute is a special attribute in Python that is available for all classes, and it contains the name of the class as a string. The __name__ attribute can be accessed from both the class and its instances using the dot notation.
NEW QUESTION # 30
Which of the following methods allow you to load a configuration using ConfigParser? (Select two answers.)
- A. read_conf
- B. read_dict
- C. read
- D. read_str
Answer: C,D
Explanation:
Explanation
ConfigParser is a built-in library in Python that allows you to read and write configuration files. The read method is used to read the configuration file which can be in any of the supported file formats, such as INI, YAML, and JSON. The read_dict method is used to read the configuration from a Python dictionary. The read_conf and read_str options are not valid methods in the ConfigParser module.
Therefore, the correct options to load a configuration using ConfigParser are A. read and D. read_string.
NEW QUESTION # 31
Select the true statements related to PEP 8 naming conventions. (Select two answers.)
- A. You should always use self as the first argument to instance methods, and cls as the first argument to class methods.
- B. Modules should have short names written in CameICase.
- C. Constants should be written in all lower-case letters with words separated by underscores
- D. Function and variable names should be lower-case with words separated by underscores.
Answer: C,D
Explanation:
Explanation
Option A is true because PEP 8 recommends that function and variable names should be lowercase, with words separated by underscores .
Option D is true because PEP 8 recommends that constants should be written in all capital letters with words separated by underscores .
PEP 8 is the official style guide for Python code. It provides guidelines for how to write readable code that follows consistent naming conventions. The aim of PEP 8 is to improve the readability of Python code and make it easier to understand and maintain.
According to PEP 8, variable and function names should be written in all lower-case letters with words separated by underscores, as stated in A. Constants, which are variables whose value is expected to remain constant throughout the code, should be written in all upper-case letters with words separated by underscores, as stated in D.
References:
* PEP 8 -- Style Guide for Python Code: https://www.python.org/dev/peps/pep-0008/
* Python Documentation: https://docs.python.org/3/tutorial/classes.html#classmethods-and-staticmethods
NEW QUESTION # 32
Look at the following examples of comments and docstrings in PythonSelect the ones that are useful and compliant with PEP 8 recommendations (Select the two best answers.) A)
- A.
- B.
- C.
- D.
Answer: A,C
Explanation:
Explanation
According to PEP 8 recommendations, the two best options are Option B and Option D.
Option B follows PEP 8's suggestion that all lines should be limited to 79 characters and for longer blocks of text like docstrings or comments, the length should be limited to 72 characters1. Option D follows PEP 8's conventions for writing good documentation strings (a.k.a. "docstrings") which are immortalized in PEP
257. It suggests writing docstrings for all public modules, functions, classes, and methods2.
NEW QUESTION # 33
Which of the following will set the button text's font to 12 point italics Anal? (Select two answers)
- A.
- B.
- C.
- D.
Answer: B,C
Explanation:
Explanation
Option B is correct because it sets the font option of the button to a tuple containing the font family ('Arial'), size (12), and style ('italic').
Option C is correct because it sets the font option of the button to a string containing the font family ('Arial'), size (12), and style ('italic') separated by spaces.
NEW QUESTION # 34
A socket object is usually created by which one of the following invocations?
- A. socket. socket (socket_domain, socket_type)
- B. socket = socket.socket(server address)
- C. socket = socket. socket (socket_number)
- D. socket = socket. socket (socket_domain, socket_type, server_address)
Answer: A
Explanation:
Explanation
A socket object is usually created using the socket() constructor provided by the socket module in Python. The correct invocation is socket.socket(socket_domain, socket_type). This creates a new socket object with the specified socket domain and type.
NEW QUESTION # 35
Select the true statement about the socket. gaierror exception.
- A. It is raised when a timeout occurs on a socket.
- B. It is raised when an address-related error caused by the getaddrinfo () and getnameinfo () functions occurs.
- C. It is raised when an address-related error caused by the repr () function occurs.
- D. It is raised when a system function returns a system-related error.
Answer: B
Explanation:
Explanation
The socket.gaierror exception is raised when an address-related error caused by the getaddrinfo() and getnameinfo() functions occurs. These functions are used to translate hostnames to IP addresses and vice versa, and the gaierror exception is raised if they fail to perform this translation.
NEW QUESTION # 36
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