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312-49 · Question #659

Centralized binary logging is a process in which many websites write binary and unformatted log data to a single log file. What extension should the investigator look to find its log file?

The correct answer is C. .ibl. In Microsoft IIS (Internet Information Services), Centralized Binary Logging (CBL) consolidates log data from all hosted websites into a single binary-formatted file with the .ibl extension (Internet Binary Log). Unlike standard text-based .log files, .ibl files are not…

Submitted by suresh_in· Apr 18, 2026Disk Forensics

Question

Centralized binary logging is a process in which many websites write binary and unformatted log data to a single log file. What extension should the investigator look to find its log file?

Options

  • A.cbl
  • B.log
  • C.ibl
  • D.txt

How the community answered

(25 responses)
  • B
    4% (1)
  • C
    92% (23)
  • D
    4% (1)

Explanation

In Microsoft IIS (Internet Information Services), Centralized Binary Logging (CBL) consolidates log data from all hosted websites into a single binary-formatted file with the .ibl extension (Internet Binary Log). Unlike standard text-based .log files, .ibl files are not human-readable and require parsing tools. This format reduces I/O overhead on busy servers. Investigators looking for IIS centralized binary logs should search for files with the .ibl extension, typically in the configured log directory.

Topics

#Log analysis#File extensions#Binary logging#Digital forensics

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