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EMC Storage Technology Foundations Sample Questions:

1. Which is used as backup media in virtual tape library?

A) Tapes
B) Virtual tapes
C) Disks
D) Optical disks

2. What relationship does Little's Law represent?
a = arrival rate
R = average response time
Rs = service time
N = total number of requests in the queue

A) a = N / R
B) N = R / a
C) a = Rs/ N
D) N = a / R

3. What is stored in tag RAM?

A) Pointers to the location of data in cache and on disk
B) Data written by the host but not yet saved to disk
C) Flags that indicate whether or not data is duplicated in cache
D) Read-ahead data fetched by the storage array

4. What are replicated in storage array based remote replication?

A) Writes to source devices
B) Writes to target devices
C) I/Os to source devices
D) Reads from source devices

5. A pointer based replica has been created. Source devices are being used for production operations. When is data copied from the source to the save location?

A) All writes to a location on the source
B) First read from a location on the source
C) First write to a location on the source
D) All reads from a location on the source

Solutions: