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MCDST Desktop Technician Exam Prep

Category - MCDST

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You need to copy a configuration file that is compressed using NTFS compression to another volume. The file size of the log file is 3 GB, however it consumes only 500 MB of the file system because it is compressed. The destination volume has 2 GB of available space, so you enable compression on the folder that will receive the log file. During the file transfer, you receive an error indicating that there is not enough space to complete the copy.

Which of the following could have happened?
  1. Files copied between volumes are always written as uncompressed, regardless of the compression state of the source file or the destination folder.
  2. Files copied between volumes are first written to the disk uncompressed. NTFS compresses the file only if the destination folder is compressed.
  3. Files copied between volumes inherit the compression state of the base volume, not the destination folder.
  4. Compressed files must be written to unfragmented areas of the disk. Although the destination disk might have sufficient free space, the free space is fragmented and therefore unusable for compressed files.
Explanation
Answer - B - The files copied between volumes are first written to the disk uncompressed. Once the file transfer is complete, it is compressed.

Key Takeaway: Compression cannot occur on a file until the entire file has been received. Therefore, the file is written to the destination volume uncompressed.

NTFS automatically compresses the file after the file transfer has completed. However, because the file is initially written uncompressed regardless of the compression state of the destination folder, the destination volume must have enough free space to store the entire uncompressed file.
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