LX0-104 · 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, as a dialect of SMB, supports filenames in any character set due to Unicode support and utilizes Opportunistic Locks for client-side caching and improved performance.
Question
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
(17 responses)- A88% (15)
- B6% (1)
- C6% (1)
Why each option
CIFS, as a dialect of SMB, supports filenames in any character set due to Unicode support and utilizes Opportunistic Locks for client-side caching and improved performance.
CIFS, as an evolution of SMB, supports Unicode filenames, allowing for the use of various character sets beyond simple ASCII.
While older file systems had length restrictions, modern CIFS/SMB supports filenames much longer than 127 characters, typically up to 255 characters for path components.
CIFS and later SMB versions include features like opportunistic locking and byte-range locking that are designed to optimize performance, including over slow or high-latency network connections, contradicting the statement.
Opportunistic Locks (Oplocks) are a fundamental feature of the SMB/CIFS protocol, enabling clients to perform local caching of file data and metadata, thereby improving performance and reducing network traffic.
Concept tested: CIFS protocol features - filenames and performance optimizations
Source: https://learn.microsoft.com/en-us/windows/win32/fileio/opportunistic-locks
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