5V0-22.23 Exam Dumps : VMware vSAN Specialist v2

Two characteristics of the vSAN Data-At-Rest Encryption (DARE) are that it is Software Defined and works independently of the Cache or Capacity drives installed on the Nodes, and that it continues to operate unaffected during downtime on vCenter Server. DARE is a feature that encrypts all data stored on vSAN disks using AES-256 XTS mode. It does not require Self-Encrypting Drives (SEDs) to work, as it uses software-based encryption keys that are generated by an external Key Management Server (KMS) or a vSphere Native Key Provider. DARE also does not depend on the type or size of the disks used in the vSAN cluster, as it encrypts data after all other processing, such as deduplication and compression, is performed. DARE can function even when the vCenter Server is offline or unavailable, as it uses key persistence to store the encryption keys on the ESXi hosts or in a Trusted Platform Module (TPM). The hosts can access the keys without contacting the KMS or the vCenter Server. The other options are notcorrect, as they do not describe DARE accurately. DARE does not need to be enabled together with the vSAN Data-In-Transit encryption, as they are independent features that can be enabled or disabled separately. Data-In-Transit encryption encrypts data that is transmitted between hosts in a vSAN cluster using secure sockets layer (SSL) certificates. DARE is supported on Stretched Cluster environments, as it can encrypt data across multiple sites using site affinity rules. 

To implement HCI mesh between two clusters on vSAN that are located in geographically separate sites, the vSAN administrator should consider the following requirements:

• Either Layer 2 or Layer 3 communications can be used. HCI mesh supports both Layer 2 and Layer 3 network configurations, as long as the network latency and bandwidth requirements are met3
• The configuration must meet the same latency and bandwidth requirement as local vSAN. HCI mesh requires a network latency of less than or equal to 5 ms RTT between any two hosts in the participating clusters, and a network bandwidth of at least 10 Gbps for the vSAN network vmkernel port3 References: 3: VMware vSAN Specialist v2 Exam Preparation Guide, page 15

To protect a virtual machine against a disk or disk group failure, the storage policy must have a failure tolerance method (FTM) of RAID-1 or RAID-6 and a failure to tolerate (FTT) value of at least 1. RAID-1 mirrors the data across multiple disk groups, while RAID-6 uses erasure coding to stripe the data and parity information across multiple disk groups. RAID-5 is not suitable for this scenario, as it can only tolerate one disk failure per stripe. FTT 2 or 3 would require more disk groups than available in the cluster. Therefore, the correct options are C and E. References: 1, page 8; 2, section 3.1