EMC 認證是一項電磁兼容性認證，EMC認證主要分為Technology Foundations ，Specialist，Legato Cert，Implemenation四類認證體系。E22-280考試屬于EMC Implemenation認證考試。E22-280考試全稱：Avamar Backup and Data Deduplication Exam，E22-280最新題庫包括128 Q&As，最新更新日期：2009年10月1日。EMC -280最新題庫部分真題如下：
1.What are key features of EMC Avamar?
A.Disk-based archive
RAID, RAIN, clustering and replication
Global deduplication
B.Global deduplication
RAID, RAIN, checkpoints and replication
Disk storage
C.Global deduplication
RAID, RAIN, checkpoints and replication
Auto-archive of NAS
D.OS-specific deduplication
RAID, RAIN, checkpoints and replication
Full, Incremental and Differential file system backups
Answer:B
2.How does EMC Avamar reduce the amount of backup data that is sent across the network?
A.Excludes files with similar content from the backup
B.Only performs backups of changed blocks
C.Performs fixed block deduplication
D.Identifies redundant data at the source
Answer:D
3.What best describes EMC Avamar’s method of deduplication?
A.Reduces storage needs for file servers by identifying duplicate files within disk volumes with
source-based deduplication.
B.Reduces the amount of full backups by eliminating redundant data and performing incrementals
forever
C.Uses a fixed length deduplication process to determine segment size by examining data for repeatable
boundary points
D.Uses a variable length segmentation process to determine segment size by examining data for
repeatable boundary points
Answer:D
4.What is the maximum number of data nodes in a supported EMC Avamar server configuration?
A.12
B.14
C.16
D.18
Answer:C