Explain the Nature and Use of User Identifiers and ID Mapping POWERSCALE-DEPLOY Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A PowerScale cluster is used by both NFS and SMB clients. The administrator has configured ID mapping so that a specific Windows user is mapped to UID 1500. When the user accesses a file via NFS, what UID will the NFS client see?

   • AThe user's original Unix UID, if they have one.
   • BA UID of 0, because the mapping is only for SMB access.
   • CUID 1500, because that is the mapped UID for the user.
   • DThe user's SID, because NFS uses SIDs for authentication.
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2. 12application · medium

   An administrator is configuring a new PowerScale cluster. They have both Unix and Windows users. The Unix users have UIDs in the range 1000-2000, and the Windows users have SIDs. The administrator wants to ensure that a Windows user with SID S-1-5-21-...-1001 is treated as the same user as a Unix user with UID 1001. What is the best way to achieve this?

   • AConfigure SID-to-UID mapping, which will automatically map the SID to UID 1001.
   • BCreate a Unix user with UID 1001 and a Windows user with SID ending in 1001, and the system will automatically link them.
   • CConfigure a direct mapping rule that maps the SID to UID 1001.
   • DConfigure UID-to-SID mapping, which will map UID 1001 to the SID.
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4. 13application · medium

   An organization is migrating from a legacy NAS to PowerScale. They have a large existing NFS environment where all Unix users have UIDs in the range 1000-5000. They also have an Active Directory domain where the same users have SIDs. The administrator wants to ensure that when a user accesses files via SMB, the system uses the same UID that was used on the legacy NAS for NFS access. Which ID mapping method should be configured?

   • AUID-to-SID mapping, which maps Unix UIDs to SIDs for NFS clients.
   • BSID-to-UID mapping, which automatically generates UIDs from the SID's last 32 bits.
   • CDirect mapping, which maps each SID to a specific UID in the 1000-5000 range.
   • DThe default mapping, which uses the UID from the user's Unix passwd entry.
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5. 14foundation · easy

   Which ID mapping method in PowerScale is used to generate a Windows SID from an existing Unix UID?

   • ADirect mapping
   • Bsid-to-uid
   • CRFC 2307 mapping
   • Duid-to-sid
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6. 15expert · hard

   A company is migrating from a legacy NAS to PowerScale. The legacy NAS used NFS with UIDs in the range 1000-5000. The new PowerScale cluster will use Active Directory for authentication. The administrator wants to ensure that existing NFS clients can still access files with their current UIDs, while also allowing SMB access for Windows users. The Windows users have SIDs that do not correlate with the existing UIDs. What is the best ID mapping strategy?

   • AUse UID-to-SID mapping, which will map the existing UIDs to new SIDs for Windows access.
   • BUse direct mapping to map each Windows SID to the corresponding existing Unix UID.
   • CDisable ID mapping and use the same UIDs for both NFS and SMB access.
   • DUse SID-to-UID mapping, which will generate UIDs from the SIDs, and then update the NFS clients to use the new UIDs.
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