EMC E10-001 Online Practice Questions and Exam Preparation

EMC E10-001 Online Questions & Answers

• Question 261:

  An organization plans to deploy a new business application in their environment. The new application requires 3 TB of storage space. During peak workloads, the application is expected to generate 2450 IOPS with a typical I/O size of 2 KB.

  Because the application is business-critical, the response time must be within acceptable range.

  The available disk drive option is a 7200 rpm drive with 100 GB capacity. The number of IOPS in which the disk drive can perform at 100 percent utilization is 140.

  What is the number of disk drives needed to meet the application's capacity and performance requirements?

  A. 18
  B. 25
  C. 28
  D. 30
  D. 30

• Question 262:

  In a storage system, the cache is configured with an upper-bound and a lower-bound to manage its utilization. Which flushing mode is activated when the cache utilization levels reach 100 percent?

  A. Forced
  B. High watermark
  C. Idle
  D. Low watermark
  A. Forced

• Question 263:

  How is the internal transfer rate of disk drives defined?

  A. Speed at which data moves from the read/write head to the platter
  B. Speed at which data moves from a platter's surface to the internal buffer
  C. Speed at which data moves from internal buffer to the host interface
  D. Speed at which data moves from the innermost cylinder to the read/write head
  B. Speed at which data moves from a platter's surface to the internal buffer

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  Data Transfer Rate The data transfer rate (also called transfer rate) refers to the average amount of data per unit time that the drive can deliver to the HBA. In a read operation, the data first moves from disk platters to R/W heads; then it moves to the drive's internal buffer. Finally, data moves from the buffer through the interface to the host HBA. In a write operation, the data moves from the HBA to the internal buffer of the disk drive through the drive's interface. The data then moves from the buffer to the R/W heads. Finally, it moves from the R/W heads to the platters. The data transfer rates during the R/W operations are measured in terms of internal and external transfer rates, as shown in the slide.

  

  Internal transfer rate is the speed at which data moves from a platter's surface to the internal buffer (cache) of the disk. The internal transfer rate takes into account factors such as the seek time and rotational latency. External transfer rate is the rate at which data can move through the interface to the HBA. The external transfer rate is generally the advertised speed of the interface, such as 133 MB/s for ATA. The sustained external transfer rate is lower than the interface speed.

  EMC E10-001 Student Resource Guide. Module 2: Data Center Environment

• Question 264:

  What is included as part of SAN accessibility monitoring?

  A. Fan-in/Fan out ratio
  B. Port status change
  C. ISL utilization
  D. Disk status
  B. Port status change

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  Monitoring Network: Accessibility Storage networks need to be monitored to ensure proper communication between the server and the storage array. Uninterrupted access to data over the storage network depends on the accessibility of the physical and logical components in the storage network. The physical components of a storage network include switches, ports, cables, and power supplies. The logical components include constructs, such as zones. Any failure in the physical or logical components causes data unavailability. For example, errors in zoning, such as specifying the wrong WWN of a port, result in failure to access that port, which potentially prevents access from a host to its storage. EMC E10-001 Student Resource Guide. Module 14: Securing the Storage Infrastructure

• Question 265:

  What is an accurate statement about a virtual machine (VM) snapshot?

  A. Captures the state and data of a running VM at a specific point-in-time
  B. Provides the capability to delete the parent VM once the snapshot is created
  C. Runs as an independent copy from the parent VM
  D. Provides the capability to restore VM data to any point-in-time
  A. Captures the state and data of a running VM at a specific point-in-time

• Question 266:

  Refer to the exhibit.

  

  Which type of storage device does the `X' represent in the exhibit?

  A. Object-based
  B. Block-based
  C. File-based
  D. Unified-based
  A. Object-based

• Question 267:

  What is a characteristic of a modular switch?

  A. Port count is increased by installing additional port cards
  B. Ports are connected in a logical loop or a physical star topology
  C. Functionality of a standard NIC and an FC HBA is converged in an ASIC
  D. All port cards on the switch share the loop bandwidth
  A. Port count is increased by installing additional port cards

• Question 268:

  Which lossless Ethernet functionality helps Converged Enhanced Ethernet (CEE) devices to convey and configure their features with the other CEE devices in the network?

  A. Data center bridging exchange protocol
  B. Enhanced transmission selection
  C. Priority-based flow control
  D. Congestion notification
  A. Data center bridging exchange protocol

• Question 269:

  Why is it important for an organization to archive their data for an extended period of time?

  A. Meet regulatory compliance requirements
  B. Avoid data loss in the event of a disaster
  C. Eliminate the need for backups
  D. Provide disaster recovery capability
  A. Meet regulatory compliance requirements

• Question 270:

  Which cloud-enabling technology provides a service provisioning model that offers computing resources as a metered service?

  A. Utility computing
  B. Service-oriented architecture
  C. Grid computing
  D. Distributed computing
  A. Utility computing