Starting with Dell EMC Unity OE version 4.2, SMB 3.1.1 is supported. This provides improved security and encryption traffic performance for SMB3 by changing the encryption algorithm from AES-CCM-128 to AESGCM-128. This change improves performance under certain conditions such as large file transfers. In addition, this improves security against man-in-the-middle attacks.
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h15572-dell-emc-unity-nas-capabilities.pdf
That’s an ambiguous question since they are not informing the SMB or OE version.
From page 40:<<Starting with Dell EMC Unity OE version 4.2, SMB 3.1.1 is supported. This provides improved security and encryption traffic performance for SMB3 by changing the encryption algorithm from AES-CCM-128 to AES-GCM-128.>>
dell-emc-unity-nas-capabilities.pdf
and <<The protocol encryption is enforced at user session level, ensuring the whole SMB traffic is encrypted once the user session is established. For encryption, SMB 3.0 leverages AES-CCM-128 while SMB 3.1.1 enhances this further by using AES-GCM-128, which improves performance and security.>> (DELL EMC UNITY DATA INTEGRITY, Page 9)
Should be B, but there’s a spelling problem with that option (AES128-GCM instead AES-GCM-128). Although that spelling is found in documents from WEB, we don’t know what the tester had in mind.
A customer is deciding whether to purchase a dell emc unity or a dell SC Series array. Which feature is only available on the sc Series array?
a-vVols
b-Cross Platform Replication
c-Deduplication and Compression
d-DSM
A customer needs a data storage solution that allow them to have two Flash tiers that support automatic data placement between them with the option to integrate a third capacity HDD tier in the future. Which Dell EMC SC Series storage profile option meets the current customer business requirement without requiring changes to the configuration in the future?
a)Maximum Perfomance
b)Maximum Efficiency
c)Flash optimized with Progression
d)Flash only with Progression
Starting with Dell EMC Unity OE version 4.2, SMB 3.1.1 is supported. This provides improved security and encryption traffic performance for SMB3 by changing the encryption algorithm from AES-CCM-128 to AES-GCM-128.
B.
This provides improved security and encryption traffic performance for SMB3 by changing the encryption algorithm from AES-CCM-128 to AESGCM-128.
Page 40 : https://www.delltechnologies.com/en-zm/collaterals/unauth/white-papers/products/storage/h15572-dell-emc-unity-nas-capabilities.pdf
Page 40:
For encryption, SMB3.0 leverages AES-CCM-128 while S MB 3.1.1 enhances this further by using AES-GCM-128, which improves performance and security.
It states AES-GCM-128 not AESGCM-128.
In: https://www.delltechnologies.com/en-ae/collaterals/unauth/white-papers/products/storage/h17076-dell-emc-unity-data-integrity.pdf
Page 9 it says:
SMB Signing uses the HMAC-SHA256 encryption algorithm. The SMB3 protocol updates the encryption algorithm to use AES-CMAC for SMB Signing, which improves performance.
The question does not specify SMB 3.
I believe the answer is HMAC-SHA256
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