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EMC EMC Certification E20-538 Network Attached Storage (NAS) Specialist Exam for Storage Administrators Exams
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EMC E20-538 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Protection and Backup | - Snapshot and replication basics - NDMP and backup methodologies |
| NAS Fundamentals | - Network storage concepts - File protocols (NFS, CIFS/SMB) - NAS architecture and components |
| Troubleshooting and Optimization | - Performance tuning and monitoring - Network and protocol troubleshooting |
| Configuration and Administration | - User mapping and security - Storage provisioning and management - Data Mover and VDM configuration |
EMC Network Attached Storage (NAS) Specialist Exam for Storage Administrators Sample Questions:
1. The SavVol High Water Mark (HWM) is set to 0 when a scheduled checkpoint is created. What action is triggered by SnapSure when SavVol is at 90% capacity and there is available disk space?
A) Data in oldest checkpoint is deleted and the space is recycled.
B) SavVol is automatically extended when near-full capacity is reached.
C) Data in oldest checkpoint is automatically copied to tape.
D) Data in most recent checkpoint is deleted and the space is recycled.
2. Which operating system utilizes CBMCLI to manage snapshots of iSCSI LUNs on a Celerra and to manage replication of the snapshots?
A) Windows
B) HP-UX
C) AIX
D) Linux
3. A CIFS user has previously accessed a Data Mover with a secondary Usermapper service, and performs a subsequent access to the same Data Mover. Which describes the mapping operation for this user?
A) The secondary Usermapper queries the primary Usermapper service, which in turn provides the user mapping from its database.
B) The secondary Usermapper service provides the user mapping from its database.
C) The secmap cache on the Data Mover with the primary Usermapper service provides the user mapping.
D) The secmap cache on the Data Mover being accessed provides the user mapping.
4. Which describes how a Usermapper client resolves a Windows SID to UNIX UID/GID?
A) Broadcasts over the internal Celerra network for a primary or secondary Usermapper service
B) Uses the ntxmap.conf file first, then the Data Mover secmap cache
C) Uses the resolution order defined in the Data Mover nsswitch.conf file
D) Broadcasts over the internal Celerra network for secmap cache on server_2
5. Refer to the exhibit: Both virtual devices (lacp0 and lacp1) are used to create another virtual device "fsn0". lacp0 is the primary.
What happens if only cge0 fails?
A) Traffic from lacp0 will be redirected toward lacp1 only, while cge0 is in a failed state.
B) Traffic from cge0 will be redirected toward cge1, but lacp0 will still be the active path.
C) Traffic from lacp0 will be redirected toward lacp1, and manual intervention will be required to make lcap0 the active path again.
D) Traffic normally traversing cge0 on lacp0 is now redirected to fge2 on lacp1.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: B |







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