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Python Institute PCPP PCPP-32-101 Exam and Certification Test Engine
To prepare for the PCPP1 certification exam, individuals can enroll in training programs offered by the Python Institute or study independently using the official Python Institute Study Guides. PCPP-32-101 exam is administered online and consists of 40 multiple-choice questions that must be completed within 75 minutes. Upon passing the exam, individuals will receive the PCPP1 certification, which is valid for life and does not require recertification.
Python Institute PCPP-32-101 (PCPP1) Exam is a globally recognized certification program for professionals who want to demonstrate their proficiency in Python programming. PCPP1 - Certified Professional in Python Programming 1 certification is designed to validate a candidate's skills in writing and maintaining Python code, understanding of basic programming concepts, and knowledge of Python libraries and frameworks.
NEW QUESTION # 12
Which of the following methods allow you to load a configuration using ConfigParser? (Select two answers.)
- A. read
- B. read_str
- C. read_conf
- D. read_dict
Answer: A,B
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 # 13
What is a static method?
- A. A method that works on class objects that are instantiated
- B. A method that works on the class itself
- C. A method that requires no parameters referring to the class itself
- D. A method decorated with the @method trait
Answer: C
Explanation:
Explanation
A static method is a method that belongs to a class rather than an instance of the class. It is defined using the @staticmethod decorator and does not take a self or cls parameter. Static methods are often used to define utility functions that do not depend on the state of an instance or the class itself.
NEW QUESTION # 14
What is the result of the following code?
What is the result of the following code?
- A. Debugging mode has been enabled Loading data...
- B. Nothing will be displayed
- C. Debugging mode has been enabled
- D. Loading data...
Answer: D
Explanation:
Explanation
This statement is true because the code uses the logging module to create a logger object and set its level to logging.INFO. The logging module provides a way of reporting events that occur during the execution of a program. The logging level determines which events are reported and which are ignored. The logging module defines five levels of severity: DEBUG, INFO, WARNING, ERROR, and CRITICAL. The lower the level, the more events are reported.
The code then uses the logger object to log two messages: one with the level logging.DEBUG and one with the level logging.INFO. The logger object only reports the messages that have a level equal or higher than its own level. Therefore, the message with the level logging.DEBUG is ignored, while the message with the level logging.INFO is reported. The default format for reporting messages is "level name: message". Therefore, the output of the code is:
INFO: Loading data...
NEW QUESTION # 15
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. csv.QUOTE_NONE
- B. svQUOTE_ALL
- C. csv.QUOTE_MINIMAL
- D. csv.QUOTE_NONNUMERIC
Answer: C
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 # 16
Analyze the following function and choose the statement that best describes it.
- A. It is an example of decorator stacking.
- B. It is an example of a decorator that accepts its own arguments.
- C. The function is erroneous.
- D. It is an example of a decorator that can trigger an infinite recursion.
Answer: B
Explanation:
Explanation
In the given code snippet, the repeat function is a decorator that takes an argument num_times specifying the number of times the decorated function should be called. The repeat function returns an inner function wrapper_repeat that takes a function func as an argument and returns another inner function wrapper that calls func num_times times.
The provided code snippet represents an example of a decorator that accepts its own arguments.
The @decorator_function syntax is used to apply the decorator_function to the some_function function.
The decorator_function takes an argument arg1 and defines an inner function wrapper_function that takes the original function func as its argument. The wrapper_function then returns the result of calling func, along with the arg1 argument passed to the decorator_function.
Here is an example of how to use this decorator with some_function:
@decorator_function("argument 1")
defsome_function():
return"Hello world"
When some_function is called, it will first be passed as an argument to the decorator_function.
The decorator_function then adds the string "argument 1" to the result of calling some_function() and returns the resulting string. In this case, the final output would be "Hello world argument 1".
NEW QUESTION # 17
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)
- A. #0000FF
- B. #FFFFFF
- C. #FF0000
- D. #000000
Answer: A,C
NEW QUESTION # 18
What is true about the invocation of the cget () method?
- A. It can be replaced with a dictionary-like access manner.
- B. It can be used to set new values to widget attributes.
- C. It has the same effect as the config () method.
- D. It can be used to read widget attributes.
Answer: D
Explanation:
Explanation
The cget() method in Python is used to read the configuration options of a widget in Tkinter. It retrieves the value of a specified configuration option for a Tkinter widget. Hence, option A is the correct answer.
NEW QUESTION # 19
Which function or operator should you use to obtain the answer True or False to the question: "Do two variables refer to the same object?"
- A. The is operator
- B. The isinstanceO function
- C. The id () function
- D. The = operator
Answer: A
Explanation:
Explanation
To test whether two variables refer to the same object in memory, you should use the is operator.
The is operator returns True if the two variables point to the same object in memory, and False otherwise.
For example:
a = [1, 2, 3]
b = a
c = [1, 2, 3]
print(a is b) # True
print(a is c) # False
In this example, a and b refer to the same list object in memory, so a is b returns True. On the other hand, a and c refer to two separate list objects with the same values, so a is c returns False.
NEW QUESTION # 20
What is true about the unbind_all () method?
(Select two answers.)
- A. It can be invoked from the main window widget only
- B. It causes all the widgets to disappear
- C. It is parameterless
- D. It can be invoked from any widget
Answer: C,D
Explanation:
Explanation
The unbind_all() method in Tkinter is used to remove all event bindings from a widget. It is a method of the widget object and can be called on any widget in the Tkinter application. Therefore, option A is the correct answer.
Option B is incorrect because the method can be called on any widget, not just the main window widget.
Option C is correct as unbind_all() does not take any parameters.
Option D is incorrect because the method only removes event bindings and does not cause the widgets to disappear.
So, the correct answers are A and C.
References:
* Tkinter documentation: https://docs.python.org/3/library/tkinter.html#event-bindings
* Tkinter tutorial: https://www.python-course.eu/tkinter_events_binds.php
NEW QUESTION # 21
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 a built-in method that allows enumeration of composite objects
- D. It is the topmost type that any class can inherit from
Answer: D
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 # 22
Select the true statements about the connection-oriented and connectionless types of communication. (Select two answers.)
- A. A phone call is an example of a connection-oriented communication
- B. Connectionless communications are usually built on top of TCP
- C. Using walkie-talkies is an example of a connection-oriented communication
- D. 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
Answer: A,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 # 23
Select the true statements about the following invocation:
(Select two answers.)
- A. It addresses a service whose timeout is set to 3000 ms.
- B. It addresses a service deployed at localhost (the host where the code is run).
- C. It addresses a service listening at port 3000.
- D. It addresses a service located at the following address local.host.com.
Answer: B,C
Explanation:
Explanation
It addresses a service deployed at localhost (the host where the code is run).
This statement is true because localhost is a special hostname that refers to the local machine or the current host where the code is run. It is equivalent to using the IP address 127.0.0.1, which is the loopback address of the network interface. By using localhost as the hostname, the invocation addresses a service that is deployed on the same machine as the client.
It addresses a service listening at port 3000.
This statement is true because port 3000 is the part of the URL that follows the colon after the hostname. It specifies the port number where the service is listening for incoming requests. A port number is a 16-bit integer that identifies a specific process or application on a host. By using port 3000, the invocation addresses a service that is listening at that port.
It addresses a service whose timeout is set to 3000 ms.
This statement is false because timeout is not a part of the URL, but a parameter that can be passed to the requests.get () function in Python. Timeout specifies how long to wait for the server to send data before giving up. It is measured in seconds, not milliseconds. By using timeout=3, the invocation sets the timeout to 3 seconds, not 3000 ms.
It addresses a service located at the following address local.host.com.
This statement is false because local.host.com is not the same as localhost. Local.host.com is a fully qualified domain name (FQDN) that consists of three parts: local, host, and com. It requires DNS resolution to map it to an IP address. Localhost, on the other hand, is a special hostname that does not require DNS resolution and always maps to 127.0.0.1. By using localhost as the hostname, the invocation does not address a service located at local.host.com.
References:
https://docs.python.org/3/library/requests.html : https://en.wikipedia.org/wiki/Localhost :
https://en.wikipedia.org/wiki/Port_(computer_networking) :
https://en.wikipedia.org/wiki/Fully_qualified_domain_name
NEW QUESTION # 24
What is true about the unbind () method? (Select two answers.)
- A. It needs a widget's object as an argument
- B. It is invoked from within the events object
- C. It is invoked from within a widget's object
- D. It needs the event name as an argument
Answer: C,D
Explanation:
Explanation
Option B is true because the unbind() method is invoked from within a widget's object 1.
Option D is true because the unbind() method needs the event name as an argument 1.
The unbind() method in Tkinter is used to remove a binding between an event and a function. It can be invoked from within a widget's object when a binding is no longer needed. The method requires the event name as an argument to remove the binding for that specific event. For example:
button = tk.Button(root, text="Click me")
button.bind("<Button-1>", callback_function) # bind left mouse click event to callback_function button.unbind("<Button-1>") # remove the binding for the left mouse click event
NEW QUESTION # 25
Select the true statement about the socket. gaierror exception.
- A. It is raised when an address-related error caused by the getaddrinfo () and getnameinfo () functions occurs.
- B. It is raised when a timeout occurs on a socket.
- C. It is raised when a system function returns a system-related error.
- D. It is raised when an address-related error caused by the repr () function occurs.
Answer: A
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 # 26
What does the term deserialization mean? Select the best answer.
- A. It is a process of assigning unique identifiers to every newly created Python object
- B. It is another name for the data transmission process
- C. It is a process of converting the structure of an object into a stream of bytes
- D. It is a process of creating Python objects based on sequences of bytes.
Answer: D
Explanation:
Explanation
answer A. Deserialization is the process of converting data that has been serialized or encoded in a specific format, back into its original form as an object or a data structure in memory. In Python, this typically involves creating Python objects based on sequences of bytes that have been serialized using a protocol such as JSON, Pickle, or YAML.
For example, if you have a Python object my_obj and you want to serialize it to a JSON string, you might do something like this:
importjson
serialized_obj = json.dumps(my_obj)
To deserialize the JSON string back into a Python object, you would use the json.loads() method:
deserialized_obj = json.loads(serialized_obj)
This would convert the JSON string back into its original Python object form.
NEW QUESTION # 27
Analyze the following snippet and select the statement that best describes it.
- A. The code is syntactically incorrect - the function should be defined as def f1 (*args, **kwargs)
- B. The *arg parameter holds a list of unnamed parameters
- C. The code is syntactically correct despite the fact that the names of the function parameters do not follow the naming convention
- D. The code is missing a placeholder for unnamed parameters.
Answer: B
Explanation:
Explanation
The provided code snippet defines a function f1 that accepts variable-length arguments using the *args and **kwargs syntax. The *args parameter allows for an arbitrary number of unnamed arguments to be passed to the function as a tuple, while the **kwargs parameter allows for an arbitrary number of named arguments to be passed to the function as a dictionary.
Therefore, the correct statement that best describes the code is:
The *args parameter holds a list of unnamed parameters, while the **kwargs parameter holds a dictionary of named parameters.
NEW QUESTION # 28
Select the true statement related to PEP 257.
- A. Attribute docstrings and Additional docstrings are two types of extra docstrings that can be extracted by software tools.
- B. String Iiterals that occur in places other than the first statement in a module, function, or class definition can act as documentation They are recognized by the Python bytecode compiler and are accessible as runtime object attributes
- C. String literals that occur immediately after a simple assignment at the top level of a module are called complementary docstrings
- D. String literals that occur immediately after another docstring are called attribute docstrings.
Answer: A
Explanation:
Explanation
The true statement related to PEP 257 is Option B. According to PEP 257, string literals occurring elsewhere in Python code may also act as documentation. They are not recognized by the Python bytecode compiler and are not accessible as runtime object attributes (i.e. not assigned to doc), but two types of extra docstrings may be extracted by software tools: String literals occurring immediately after a simple assignment at the top level of a module, class, or init method are called "attribute docstrings". String literals occurring immediately after another docstring are called "additional docstrings"1.
NEW QUESTION # 29
Analyze the code and choose the best statement that describes it.
- A. The code is erroneous
- B. The code is responsible for the support of the negation operator e.g. a = - a.
- C. ___ne___() is not a built-in special method
- D. The code is responsible for the support of the inequality operator i.e. i =
Answer: D
Explanation:
Explanation
The correct answer is D. The code is responsible for the support of the inequality operator i.e. i != j. In the given code snippet, the __ne__ method is a special method that overrides the behavior of the inequality operator != for instances of the MyClass class. When the inequality operator is used to compare two instances of MyClass, the __ne__ method is called to determine whether the two instances are unequal.
NEW QUESTION # 30
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