What is a characteristic of Mac OS Extended format?

The Mac OS Extended format, also known as HFS+, has a significant characteristic in that it is not case-sensitive by default. This means that file names do not differentiate between upper and lower case letters, allowing files named "Document.txt" and "document.txt" to be treated as the same file. This feature helps simplify file organization and retrieval for users who may not need strict case distinctions. However, Mac OS Extended does offer a case-sensitive variant, but the standard implementation employed in most user scenarios remains case-insensitive, which is crucial for compatibility and ease of use in everyday applications.

The other options mention characteristics that are not true for the Mac OS Extended format, such as its capability to support large files and handle journaling. Additionally, it is not limited to newer Macs; it is compatible with older systems as well. Understanding these characteristics assists technicians in determining file system suitability based on user needs and system compatibility.