EMC E20-816

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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. Which change in a Symmetrix VMAX workload will typically result in a decrease in the hit rate?

A) Decrease in the I/O size
B) Increase in the percentage of sequential reads
C) Decrease in the percentage of write I/Os
D) Spreading the workload over more devices

2. A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 8Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is connected - also at 8Gb/s.
The workload is expected to require at least 1700MB/s of reads @ 128KB I/O size. It must maintain performance in case of any major component failure in the host, switch or array. Assume that the existing workload on the VMAX does not exceed 350MB/s per port. Also assume that the ports can sustain up to 500MB/s without exceeding 70% utilization.
What is the best practice HBA to FA mapping to ensure the required performance of the data warehouse?

A) HBA0 -> FA 7e0, 8e0, 9e0, 10e0 HBA1-> FA 5e0, 6e0, 11e0, 12e0 HBA0 -> FA 7h0, 8h0, 9h0, 10h0 HBA1-> FA 5h0, 6h0, 11h0, 12h0
B) HBA0 -> E1 FA ports HBA1 -> F1 FA ports HBA2 -> G1 FA ports HBA3 -> H1 FA ports
C) HBA0 -> Engine 3 FA ports HBA1 -> Engine 4 FA ports HBA2 -> Engine 5 FA ports HBA3 -> Engine 6 FA ports
D) HBA0 -> E0 FA ports HBA1 -> F0 FA ports HBA2 -> G0 FA ports HBA3 -> H0 FA ports

3. An SRDF/Star customer wants to move their production from the current workload site to one of the target sites. Which operational step is necessary before executing the symstar halt command?

A) Ensure that both targets are in the disconnected state
B) Ensure that both targets are in the isolated state
C) Ensure that all host I/O is stopped
D) Execute a symstar switch command

4. A customer wants to configure a virtual machine that can directly access PCI hardware I/O devices such as Network Interface Controller or Host Bus Adapter. Which CPU virtualization feature will you use to achieve the objective?

A) Intel VT-x
B) AMD-RVI
C) Intel VT-d
D) AMD-V

5. Refer to the exhibit.

In a Cascaded SRDF/Star environment, Site B fails. The surviving sites are reconfigured to enable remote data protection. What is used to determine the invalid tracks that must be moved from Site A to Site C?

A) Inclusive OR of two SDDF bitmaps at Site A
B) Inclusive OR of one SDDF bitmap at Site A and one SDDF bitmap at Site C
C) Inclusive OR of two SDDF bitmaps at Site A and a bitmap at Site C
D) Inclusive OR of two SDDF bitmaps at Site C

Solutions: