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Difficulty: EasyBasic Scripting Languages and Constructs

A tier-2 help desk technician is updating a Python script that configures remote network monitoring. The script attempts to concatenate a string variable containing a host domain name with an integer variable representing a service port number, resulting in a runtime error. Which basic scripting concept must the technician apply to fix this error?

  1. Data types and type castingAnswer
  2. B
    Environment variable expansion
  3. C
    Conditional branch evaluation
  4. D
    Command-line switch parsing

Answer

Data types and type casting
The option specifying data types and type casting is correct because programming and scripting languages distinguish between different data representations, such as strings (text) and integers (numbers). Attempting to join a string and an integer directly causes a type mismatch error unless explicit or implicit type casting is used to convert the integer to a string.

Step-by-Step Solution

1
Identify the data types involved in the script operation.
One variable is a string (text) and the other is an integer (whole number).
Scripting languages enforce rules on how different data types interact during operations like concatenation.
2
Determine the cause of the runtime error.
Directly combining an integer with a string without conversion causes a type mismatch error in languages like Python.
The interpreter expects operational operands to be of compatible types.
3
Apply the appropriate scripting resolution.
Convert (cast) the integer variable into a string before concatenation.
Type casting changes the representation of the data to make it compatible with the string operation.

Key Concept

Data Types and Type Conversion in Scripting
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Topics

Basic Scripting Languages and Constructs

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