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LFCS · Question #327

Which of the following are true of CIFS? (Choose TWO correct answers)

The correct answer is A. Filenames can be in any character set. D. Opportunistic Locks are supported. CIFS supports flexible filename character sets and includes features like Opportunistic Locks for improved performance.

Submitted by mike_84· Apr 18, 2026Networking

Question

Which of the following are true of CIFS? (Choose TWO correct answers)

Options

  • AFilenames can be in any character set.
  • BFilenames can have a maximum length of 127 characters.
  • CUnlike SMB, CIFS is not optimized for slow network connections.
  • DOpportunistic Locks are supported.

How the community answered

(38 responses)
  • A
    87% (33)
  • B
    8% (3)
  • C
    5% (2)

Why each option

CIFS supports flexible filename character sets and includes features like Opportunistic Locks for improved performance.

AFilenames can be in any character set.Correct

CIFS (and modern SMB) supports Unicode filenames, which allows for filenames to be represented using various character sets, overcoming limitations of older character encodings.

BFilenames can have a maximum length of 127 characters.

Modern CIFS/SMB protocols support significantly longer filenames (e.g., 255 characters for path components and 32767 for the full path) than 127 characters, which might be a legacy limitation not applicable to current CIFS.

CUnlike SMB, CIFS is not optimized for slow network connections.

CIFS, as an evolution of SMB, includes various optimizations such as Opportunistic Locking and larger buffer sizes, which are designed to improve performance and can benefit connections even over slower networks.

DOpportunistic Locks are supported.Correct

Opportunistic Locks (Oplocks) are a key feature of CIFS/SMB that allow clients to cache files locally, enhancing performance by reducing network traffic and latency during file access.

Concept tested: CIFS features and capabilities

Source: https://learn.microsoft.com/en-us/windows-server/storage/file-server/smb-overview

Topics

#CIFS#SMB#File Sharing#Networking Protocols

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