Administering Windows Server Hybrid Core Infrastructure (AZ-800) Practice

What feature has been introduced in SMB 3.1.1?

1. SMB Multichannel

2. Preauthentication integrity

3. SMB Transparent Failover

4. SMB Signing

The correct answer is: Preauthentication integrity

Preauthentication integrity is a feature introduced in SMB (Server Message Block) 3.1.1. This enhancement improves security by ensuring that the integrity of the data is verified during the authentication process before the session is fully established. By incorporating preauthentication integrity, clients and servers can detect whether an attacker has modified data during the connection setup, thereby preventing potential man-in-the-middle attacks. This feature adds an additional layer of protection and strengthens the overall security posture of SMB communications. While SMB Multichannel, SMB Transparent Failover, and SMB Signing are important features associated with various versions of SMB, they were not introduced specifically in SMB 3.1.1. SMB Multichannel allows for more efficient use of network bandwidth by enabling multiple connections to be established simultaneously, enhancing throughput and redundancy. SMB Transparent Failover ensures that a client can maintain access to files during server failovers, providing high availability. SMB Signing is a feature that adds an extra layer of security by ensuring that the data is not tampered with during transmission. Each of these features plays a significant role in the SMB protocol and enhances its effectiveness in networked environments, but preauthentication integrity stands out for its introduction in this specific version.