Certified Professional in Python Programming 1 v1.0
Question 1
Select the true statements about the connection-oriented and connectionless types of communication. (Choose two.)
- 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
- B. Connectionless communications are usually built on top of TCP
- C. Using walkie-talkies is an example of a connection-oriented communication
- D. A phone call is an example of a connection-oriented communication
Answer : AD
Question 2
Select the true statements about sockets. (Choose two.)
- 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 is a connection point that enables a one-way communication only between remote processes
- D. A socket can be used to establish a communication endpoint for processes running on the same or different machines
Answer : AD
Question 3
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 a system function returns a system-related error.
- C. It is raised when an address-related error caused by the repr() function occurs.
- D. It is raised when an address-related error caused by the getaddrinfo() and getnameinfo() functions occurs
Answer : D
Question 4
Select the true statements about the json.dumps() function. (Choose two.)
- A. It returns a JSON string.
- B. It returns a Python entity.
- C. It takes a JSON string as its argument.
- D. It takes Python data as its argument.
Answer : AD
Question 5
What is ElementTree?
- A. A Python built-in module that contains functions used for creating HTML files.
- B. A Python library that contains an API used for parsing and manipulating JSON files.
- C. A Python library that contains functions and tools used for manipulating text files in GUI Programming.
- D. A Python built-in module that contains functions used for parsing and creating XML data.
Answer : D
Question 6
In the JSON processing context, the term serialization:
- A. names a process in which Python data is turned into a JSON string
- B. names a process in which a JSON string is turned into Python data
- C. refers to nothing, because there is no such thing as JSON serialization
- D. names a process in which a JSON string is remodeled and transformed into a new JSON string
Answer : A
Question 7
Select the true statements about the following invocation:
r = requests.get('http://localhost:3000')
(Choose two.)
- A. It addresses a service deployed at localhost (the host where the code is run).
- B. It addresses a service whose timeout is set to 3000 ms.
- C. It addresses a service located at the following address: local host.com.
- D. It addresses a service listening at port 3000.
Answer : AD
Question 8
A socket object is usually created by which one of the following invocations?
- A. socket.socket(socket_domain, socket_type)
- B. socket = socket.socket(socket_number)
- C. socket = socket.socket(socket_domain, socket_type, server_address)
- D. socket = socket.socket(server_address)
Answer : A
Question 9
Select the true statements about the sqlite3 module. (Choose two.)
- A. The fetchall method returns None when no rows are available.
- B. The execute method allows you to perform several queries at once.
- C. The execute method is provided by the Cursor class
- D. The fetchone method returns None when no rows are available
Answer : CD
Question 10
Which of the following constants will be used if you do not define the quoting argument in the writer method provided by the csv module?
- A. csv.QUOTE_MINIMAL
- B. csv.QUOTE_NONE
- C. sv.QUOTE_ALL
- D. csv.QUOTE_NONNUMERIC
Answer : A
Question 11
Which one of the following methods allows you to debug an XML tree in the xml.etree.ElementTree module?
- A. debug
- B. dump
- C. log
- D. parse
Answer : B
Question 12
Select the true statements about the sqlite3 module. (Choose two.)
- A. The sqlite3 module provides an interface compliant with the DB-API 2.0
- B. The special name memory is used to create a database in RAM
- C. The sqlite3 module does not support transactions.
- D. The fetchall method returns an empty list when no rows are available.
Answer : AD
Question 13
What is the result of the following code?
- A. Nothing will be displayed
- B. Loading data...
- C. Debugging mode has been enabled
-
D.
Debugging mode has been enabled
Loading data...
Answer : A
Question 14
What will be the content of the colors csv file when you run the following code?
-
A.
-
B.
-
C.
- D. An exception will be raised
Answer : D
Question 15
Which of the following methods allow you to load a configuration using ConfigParser? (Choose two.)
- A. read
- B. read_dict
- C. read_conf
- D. read_str
Answer : AB