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| Section | Weight | Objectives |
|---|---|---|
| Modules, Packages & Advanced Features | 10% | - Import System & Namespaces - Functional Programming Tools - Decorators & Context Managers |
| File & Data Processing | 15% | - Logging & System Interaction - XML & JSON Parsing - CSV & Configuration Files - SQLite3 Database Operations |
| Network Programming | 18% | - TCP/IP & Socket Programming - JSON/XML Data Exchange - HTTP & Client-Server Communication - REST API Basics |
| GUI Programming | 20% | - Dialogs & Application Structure - Tkinter Basics & Widgets - Event-Driven Paradigm - Event Handling & Callbacks |
| Coding Conventions, Best Practices & Standardization | 12% | - Code Readability & Documentation - PEP 1, PEP 8, PEP 20, PEP 257 - Pythonic Principles |
| Advanced Object-Oriented Programming | 25% | - Design Patterns - Attribute Access & Descriptors - Multiple Inheritance & Mixins - Abstract Base Classes - Advanced Exceptions & Exception Chaining - Shallow vs Deep Copy & Serialization - Metaclasses & Metaprogramming |
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NEW QUESTION # 53
Select the true statements about the sqlite3 module. (Select two answers.)
Answer: A,C
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 # 54
What is the result of the following code?
What is the result of the following code?
Answer: D
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 # 55
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)
Answer: B,D
Explanation:
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers) A). #FFFFFF B). #0000FF C). #FF0000 D). #000000
NEW QUESTION # 56
Select the true statements about sockets. (Select two answers)
Answer: A,B
Explanation:
A). 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 nodes 1 2 .
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.
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 firewall 3 .
C). 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 transfer 1 2 .
D). 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 sockets 1 2 .
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 # 57
Which of the following types cannot be pickled?
Answer: A
Explanation:
The correct answer is B because Python's pickle module can serialize many built-in data types, including integers, floating-point numbers, complex numbers, strings, bytes, bytearrays, booleans, and None. However, it does not serialize the actual implementation or definition body of functions and classes. Top-level functions and classes may sometimes be pickled by reference using their fully qualified names, but their code definitions are not stored inside the pickle byte stream. This distinction matters: pickle records enough information to locate an object again during unpickling, but it does not preserve source code, nested definitions, lambda functions, or dynamically created definitions in a portable way. Therefore, "function and class definitions" is the option that cannot truly be pickled as definitions.
NEW QUESTION # 58
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