Description 1 is correct. It describes a fundamental behavior of the SMB/CIFS protocol implementation in Windows clients. When a client establishes a connection to a server (identified by its IP address or name), it creates a single authenticated session. All subsequent attempts to access any share on that same server will reuse the credentials from this initial session. Windows does not permit establishing multiple, concurrent sessions to the same server using different user credentials.

Description 2 is also correct. It is a specific application of the principle in Description 1 to the Homedir feature. A user is mapped to a single home directory. Attempting to mount another user's home directory from the same server would require different credentials, which is disallowed by the single-session-per-server rule. Therefore, a user cannot mount multiple different Homedir shares.

B. This is incorrect because Description 2 is also correct, as it is a direct consequence of the networking principle stated in Description 1 and the design of the Homedir feature.

C. This is incorrect because Description 1 accurately reflects a long-standing and well-documented limitation of the Windows SMB/CIFS client.

D. This is incorrect because, as explained above, both statements accurately describe the behavior of CIFS shares in a Windows environment.

1. Huawei Official Documentation: OceanStor Dorado V6 Series 6.1.0 File Service Guide

Section: Feature Guide > CIFS > Home Directory. This guide explains the Homedir feature

where the system automatically creates a private directory for a user

implying a one-to-one mapping for that user's session. The general CIFS client limitations then apply.

2. Microsoft Official Documentation: [MS-SMB2]: Server Message Block (SMB) Protocol Versions 2 and 3

Section 3.3.5.5

"Receiving an SMB2 SESSIONSETUP Request." The protocol specification details how a session is established and bound to a single security context (user credential) for all subsequent operations between that client and server

which validates the principle in Description 1.

3. Microsoft Official Documentation: Net use Command-line Reference. The documentation for the net use command explicitly states the limitation: "If you have multiple connections to a server

you must use the same user name for each connection... Windows prompts you for a password only if you are not logged on or if the user name is different." This directly supports the statement in Description 1.