Explain the Nature and Use of User Identifiers and ID Mapping POWERSCALE-DEPLOY Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which pair of identifiers is used to represent a user and a group in a Unix/Linux environment on PowerScale?

   • AUID and GID
   • BUUID and UID
   • CUID and SID
   • DSID and GID
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2. 7expert · hard

   A PowerScale cluster has two access zones: ZoneA and ZoneB. ZoneA uses Active Directory, and ZoneB uses LDAP. A user 'jsmith' exists in both AD and LDAP. The administrator wants 'jsmith' to have the same UID in both zones so that files created in ZoneA can be accessed in ZoneB. What is the best way to achieve this?

   • ACreate a new user in AD that matches the LDAP user, and use that for both zones.
   • BUse UID-to-SID mapping in ZoneA and SID-to-UID mapping in ZoneB.
   • CConfigure the same ID mapping rule for both zones, using SID-to-UID mapping.
   • DConfigure a direct mapping rule in both zones that maps 'jsmith' to the same UID.
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4. 8application · medium

   A company runs a mixed-protocol environment where Unix clients access files via NFS and Windows clients access the same files via SMB. The storage team notices that when a Windows user creates a file, the Unix administrator sees an unexpected UID in the file's ownership metadata instead of the user's actual Unix UID. What is the most likely reason for this behavior?

   • AThe Windows SID is being translated to a Unix UID through the ID mapping rules, and the resulting UID is what NFS clients see.
   • BThe Windows user's SID is being stored directly in the Unix inode, and the NFS client is misinterpreting it as a UID.
   • CThe SMB client is using a different protocol version that does not support Unix extensions, so it writes a random UID.
   • DThe NFS client is configured to ignore SMB-created files, so it displays a placeholder UID of 0 (root).
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5. 9foundation · easy

   How does ID mapping affect file access for NFS clients in PowerScale?

   • AIt encrypts NFS traffic to prevent unauthorized access
   • BIt ensures that the UID/GID used by the NFS client is correctly translated to the appropriate SID for permission checks
   • CIt changes the NFS export permissions to match SMB shares
   • DIt converts NFS file handles to SMB file handles
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6. 10foundation · easy

   In PowerScale, what problem does ID mapping solve when a user accesses files via both NFS and SMB?

   • AIt prevents the user from seeing files that they are not authorized to access
   • BIt speeds up file transfers by reducing protocol overhead
   • CIt allows the user to change their password from either protocol
   • DIt ensures the user is recognized as the same identity regardless of the protocol used
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