Hitachi Storage Concepts HQT-0050 PDF Questions and Answers

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2. 1.Which RAID technology provides the best performance? A. RAID 0 B. RAID 1 C. RAID 5 D. RAID 10 Answer: A 2.An architect firm wants to simplify how they store and share their designs. The files are high resolution and will be viewed by many people in the company at their workstations. Each architect has their own operating system preferences, but the files should be available to all. Which platform would meet this requirement? A. a storage system with an iSCSI option installed B. a storage system with a NAS front-end C. a storage system with SAS drives and a DAS front-end D. a storage system that implements a Fibre Channel SAN Answer: B 3.Which of the following techniques can be used for performance optimization? A. Load balancing B. Data archiving C. Backup scheduling D. Encryption Answer: A 4.What are three examples of unstructured content data? (Choose three.) A. databases such as Oracle and SAP B. medical images such as MRI scans and x-rays C. digital media such as music and video files D. internal data structures such as logical volumes and pools E. electronic assets such as presentations, e-mails and design documents Answer: BCE 5.Which two Fibre Channel topologies would be implemented as DAS? (Choose two.) A. point-to-point B. arbitrated loop C. switched fabric D. public loop Answer: AB 6.Which of the following is a storage virtualization technique? A. Redundant Array of Inexpensive Disks (RAID) B. Solid State Drive (SSD) C. Network Attached Storage (NAS) D. Controller-based virtualization 2 / 4

3. Answer: D 7.Which two physical cable types does Ethernet use for transmitting data? (Choose two.) A. firewire B. 3-Phase C. fiber optic D. twisted pair Answer: CD 8.What are two benefits of cache partitioning? (Choose two.) A. It creates multiple virtual SANs within a physical SAN. B. It dedicates resources to specific applications. C. It improves response time for all applications. D. It improves utilization of storage resources. Answer: BD 9.A customer is comparing the benefits of synchronous and asynchronous replication for a two data center replication strategy. They decide to implement a synchronous solution. Why is this a correct decision? A. It provides the best data currency. B. It incurs the least propagation delays over long distances. C. It gives the best protection against regional disasters. D. It provides journaling capabilities. Answer: A 10.Which type of tiered data requires a storage infrastructure that provides reasonable performance and availability and must recover within 8 hours of a failure? A. mission-critical data B. business-critical data C. nearline data D. offline data Answer: B 11.Which two are contained within metadata? (Choose two.) A. file information B. content information C. object data D. file data Answer: AB 12.What is a Host Bus Adaptor (HBA)? A. A compact optical device that connects to switches and transmits and receives data. B. A device that connects multiple computers together to form a network segment. C. A non-volatile data storage device. 3 / 4

4. D. A Fibre Channel interface that connects a computer to a storage network. Answer: D 13.A company is experiencing performance problems when accessing a critical database across their SAN. Which two methods would the storage administrator use to improve performance when accessing the database application? (Choose two.) A. Duplicate the database. B. Load the entire database into cache. C. Increase application server memory cache. D. Use cache partitioning to segregate the database. Answer: BD 14.What are some archiving solutions? A. Tape libraries, cloud storage, and object storage B. RAID arrays, solid-state drives, and network-attached storage C. Fiber Channel switches, storage routers, and iSCSI bridges D. None of the above Answer: A 15.What is metadata? A. Data that describes other data B. Data that is used for backup and recovery purposes C. Data that is stored in an archive D. None of the above Answer: A 16.Which three parameters will affect the read/write performance of an HDD? (Choose three.) A. number of cylinders B. seek time C. start-up time D. spindle speed E. data transfer time Answer: BDE 17.Which of the following factors can affect storage system performance? A. Network speed B. Data redundancy C. Backup frequency D. Encryption level Answer: A 4 / 4