通過Python Institute PCPP-32-101認證考試肯定會給你帶來很好的工作前景，因為Python Institute PCPP-32-101認證考試是一個檢驗IT知識的測試，而通過了Python Institute PCPP-32-101認證考試，證明你的IT專業知識很強，有很強的能力，可以勝任一份很好的工作。
| Section | Weight | Objectives |
|---|---|---|
| Network Programming | 18% | - REST API Basics - HTTP & Client-Server Communication - JSON/XML Data Exchange - TCP/IP & Socket Programming |
| GUI Programming | 20% | - Dialogs & Application Structure - Event Handling & Callbacks - Tkinter Basics & Widgets - Event-Driven Paradigm |
| Modules, Packages & Advanced Features | 10% | - Functional Programming Tools - Decorators & Context Managers - Import System & Namespaces |
| Advanced Object-Oriented Programming | 25% | - Attribute Access & Descriptors - Metaclasses & Metaprogramming - Design Patterns - Multiple Inheritance & Mixins - Shallow vs Deep Copy & Serialization - Abstract Base Classes - Advanced Exceptions & Exception Chaining |
| File & Data Processing | 15% | - CSV & Configuration Files - XML & JSON Parsing - SQLite3 Database Operations - Logging & System Interaction |
| Coding Conventions, Best Practices & Standardization | 12% | - Pythonic Principles - Code Readability & Documentation - PEP 1, PEP 8, PEP 20, PEP 257 |
為了讓生活過得更好些，參加 PCPP-32-101 認證考試獲取 Python Institute 認證是每位選擇IT行業的工作人員必經之路。只有獲取了公司要求的這張證書既可獲得加薪和升遷的機會。而 Python Institute 在考古題考試方面的雄厚實力源於業界企業的大力支持。數千家公司均依託 Python Institute 標準來提供一個可靠的員工業績評估。此外，數十家擁有自己考古題專案的公司也非常信賴 Python Institute 的 PCPP-32-101 考古題，以確保員工具備扎實的技能功底。此舉可以為公司節省大量的時間和開銷。
問題 #60
Select the true statements about the connection-oriented and connectionless types of communication. (Select two answers.)
答案：B,C
解題說明：
A). 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 browser 1 .
B). 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 not 2 .
C). 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 not 3 .
D). 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 over 4 .
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:
import socket
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)
while True:
data = conn. recv ( 1024 )
if not data:
break
conn. sendall (data)
Client-side code:
import socket
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.
問題 #61
In the JSON processing context, the term serialization:
答案：B
解題說明：
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.
Reference: Official Python documentation on json: https://docs.python.org/3/library/json.html#json- serialization
問題 #62
Select the true statement about the socket. gaierror exception.
答案：D
解題說明：
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.
問題 #63
Which of the following values can be returned by the messagebox. askquestion () method?
答案：C
解題說明：
The messagebox.askquestion() method in Python's tkinter library displays a message box with a specified question and two response buttons labeled "Yes" and "No". It returns a string indicating which button was selected - either "yes" or "no".
This function is used to ask questions to the user that have only two options: YES or NO. It can be used to ask the user if they want to continue or if they want to submit something 1 .
問題 #64
Select the true statement about composition
答案：D
解題說明：
Composition is an object-oriented design concept that models a has-a relationship . In composition, a class known as composite contains an object of another class known as component . In other words, a composite class has a component of another class 1 .
B). Composition allows a class to be projected as a container of different classes.
Composition is a concept in Python that allows for building complex objects out of simpler objects, by aggregating one or more objects of another class as attributes. The objects that are aggregated are generally considered to be parts of the whole object, and the containing object is often viewed as a container for the smaller objects.
In composition, objects are combined in a way that allows for greater flexibility and modifiability than what inheritance can offer. With composition, it is possible to create new objects by combining existing objects, by using a container object to host other objects. By contrast, with inheritance, new objects extend the behavior of their parent classes, and are limited by that inheritance hierarchy.
References:
Official Python documentation on Composition: https://docs.python.org/3/tutorial/classes.html#composition GeeksforGeeks article on Composition vs Inheritance: https://www.geeksforgeeks.org/composition-vs- inheritance-python/ Real Python article on Composition and Inheritance: https://realpython.com/inheritance-composition-python/
問題 #65
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