Python Institute PCPP-32-101 Fragen Beantworten, PCPP-32-101 Fragen&Antworten

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Python Institute PCPP-32-101 Exam Syllabus Topics:

Section	Weight	Objectives
Python Standard Library and Best Practices	10%	- Advanced Python development 1. Professional programming practices 2. Code organization 3. Using standard library modules 4. Error handling and debugging
Advanced Object-Oriented Programming	25%	- Object-oriented concepts 1. Method overriding and extension 2. Inheritance and polymorphism 3. Encapsulation and abstraction 4. Class and instance attributes
Network Programming	20%	- Communication and networking 1. Socket programming 2. Network services 3. Client-server communication 4. Protocols and data exchange
Multithreading and Concurrency	10%	- Concurrent programming 1. Concurrency considerations 2. Synchronization mechanisms 3. Thread creation and management 4. Thread communication
GUI Programming	20%	- Graphical user interfaces with Tkinter 1. User interaction 2. Widgets and layouts 3. Event handling 4. Application structure
File Processing and Serialization	15%	- Data storage and transfer 1. JSON processing 2. Persistent data management 3. CSV handling 4. Pickle serialization

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PCPP-32-101 Fragen&Antworten, PCPP-32-101 German

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Python Institute PCPP1 - Certified Professional in Python Programming 1 PCPP-32-101 Prüfungsfragen mit Lösungen (Q45-Q50):

45. Frage
The following snippet represents one of the OOP pillars Which one is that?

A. Encapsulation
B. Serialization
C. Inheritance
D. Polymorphism

Antwort: A

Begründung:
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.

46. Frage
Select the true statements about the sqirte3 module. (Select two answers.)

A. The sqhte3 module does not support transactions.
B. The special name memory is used to create a database in RAM.
C. The fetchall method returns an empty list when no rows are available
D. The sqlite3 module provides an interface compliant with the DB-API 2.0.

Antwort: B,D

Begründung:
Explanation
The sqlite3 module in python provides an interface compliant to the DB-API 2.0. Thus, it follows a standard performance metric that allows for consistency in database programming with python.
The special name 'memory' is used to create a database in RAM using the sqlite3 module. Thus, when you use it as the name of the database file while opening a connection, it creates a temporary database that exists only in memory.

47. Frage
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 located at the following address local.host.com.
D. It addresses a service listening at port 3000.

Antwort: B,D

Begründung:
A). 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.
D). 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.
B). 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.
C). 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

48. Frage
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 inequality operator i.e. i =
C. ___ne___() is not a built-in special method
D. The code is responsible for the support of the negation operator e.g. a = - a.

Antwort: B

Begründung:
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.

49. Frage
The following snippet represents one of the OOP pillars Which one is that?

A. Encapsulation
B. Serialization
C. Inheritance
D. Polymorphism

Antwort: A

Begründung:
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.

50. Frage
......

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