EMC E10-001 Online Practice Questions and Exam Preparation

EMC E10-001 Online Questions & Answers

• Question 121:

  As your organization's SAN environment grows, you realize there is a greater need to manage SAN security. Which mechanism is required to prevent unauthorized activity on the FC fabric for management operations?

  A. Role-based access control
  B. Access control lists
  C. VSAN
  D. Zoning
  A. Role-based access control

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  Securing the Management Access Domain

  Management access, whether monitoring, provisioning, or managing storage resources, is associated with every device within the storage network.

  Implementing appropriate controls for securing storage management applications is important because the damage that can be caused by using these applications can be far more extensive.

  Controlling administrative access to storage aims to safeguard against the threats of an attacker spoofing an administrator's identity or elevating privileges to gain administrative access. To protect against these threats, administrative access

  regulation and various auditing techniques are used to enforce accountability of users and processes.

  Access control should be enforced for each storage component. In some storage environments, it may be necessary to integrate storage devices with third-party authentication directories, such as Lightweight Directory Access Protocol

  (LDAP) or Active Directory. Security best practices stipulate that no single user should have ultimate control over all aspects of the system. It is better to assign various administrative functions by using RBAC. Auditing logged events is a

  critical control measure to track the activities of an administrator.

  However, access to administrative log files and their content must be protected. In addition, having a Security Information Management (SIM) solution supports effective analysis of the event log files. EMC E10-001 Student Resource Guide.

  Module 14: Securing the Storage Infrastructure

• Question 122:

  Which cloud computing characteristic enables consumers to adapt to changing resource requirements by dynamically provisioning and releasing resources?

  A. Rapid elasticity
  B. On-demand self-service
  C. Measured service
  D. Resource pooling
  A. Rapid elasticity

• Question 123:

  Which operation is performed while creating a VM snapshot?

  A. Create a delta file to record changes to the virtual disk since the session is activated
  B. Capture the configuration data of a VM to create an identical copy of the VM
  C. Create a journal volume to update changes to the snapshot
  D. Create a "Gold" copy of the snapshot before copying changes to the virtual disk
  A. Create a delta file to record changes to the virtual disk since the session is activated

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  VM Snapshot VM Snapshot captures the state and data of a running virtual machine at a specific point in time. The VM state includes VM files, such as BIOS, network configuration, and its power state (powered-on, powered- off, or suspended). The VM data includes all the files that make up the VM, including virtual disks and memory. A VM Snapshot uses a separate delta file to record all the changes to the virtual disk since the snapshot session is activated. Snapshots are useful when a VM needs to be reverted to the previous state in the event of logical corruptions. EMC E10-001 Student Resource Guide. Module 11: Local Replication

• Question 124:

  What is a characteristic of an enterprise flash drive?

  A. Uses semiconductor-based solid state media
  B. Performs data search and retrieval sequentially
  C. Performs rotational speed at more than 30000 rpm
  D. Writes once and reads many
  A. Uses semiconductor-based solid state media

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  Enterprise Flash Drives

  Traditionally, high I/O requirements of an application were met by simply using more disks. Availability of enterprise class flash drives (EFD) has changed the scenario.

  Flash drives, also referred as solid state drives (SSDs), are new generation drives that deliver ultra-high performance required by performance-sensitive applications. Flash drives use semiconductor-based solid state memory (flash memory)

  to store and retrieve data. Unlike conventional mechanical disk drives, flash drives contain no moving parts; therefore, they do not have seek and rotational latencies. Flash drives deliver a high number of IOPS with very low response times.

  Also, being a semiconductor-based device, flash drives consume less power, compared to mechanical drives. Flash drives are especially suited for applications with small block size and random-read workloads that require consistently low

  (less than 1 ms) response times. Applications that need to process massive amounts of information quickly, such as currency exchange, electronic trading systems, and real-time data feed processing, benefit from flash drives.

  Overall, flash drives provide better total cost of ownership (TCO) even though they cost more on $/GB basis. By implementing flash drives, businesses can meet application performance requirements with far fewer drives (approximately 20 to

  30 times less number of drives compared to conventional mechanical drives). This reduction not only provides savings in terms of drive cost, but also translates to savings for power, cooling, and space consumption. Fewer numbers of drives

  in the environment also means less cost for managing the storage. EMC E10-001 Student Resource Guide. Module 2: Data Center Environment

• Question 125:

  What is an advantage of implementing array-to-array virtual machine (VM) migration?

  A. Balances storage utilization by redistributing VMs across different storage arrays
  B. Enables VMs to keep functioning even if the source data is lost due to a failure
  C. Improves the security of applications running inside VMs on the migrated storage array
  D. Reduces the overall storage array capacity requirements for organizations
  A. Balances storage utilization by redistributing VMs across different storage arrays

• Question 126:

  An organization performs copy on first access (CoFA) replication to create a local replica of application data. To perform a successful restore, what should be considered?

  A. Source devices must be healthy
  B. Save location size must be larger than the size of all source devices
  C. Save location size must be equal to the size of all source devices
  D. All changes to the source and replica must be discarded before the restore starts
  A. Source devices must be healthy

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  Replication: Restore and Restart Considerations Local replicas are used to restore data to production devices. Alternatively, applications can be restarted using the consistent point-in-time replicas. Replicas are used to restore data to the production devices if logical corruption of data on production devices occurs--that is, the devices are available but the data on them is invalid.

  Examples of logical corruption include accidental deletion of data (tables or entries in a database), incorrect data entry, and incorrect data updates. Restore operations from a replica are incremental and provide a small RTO. In some instances, the applications can be resumed on the production devices prior to the completion of the data copy. Prior to the restore operation, access to production and replica devices should be stopped.

  Production devices might also become unavailable due to physical failures, such as production server or physical drive failure. In this case, applications can be restarted using the data on the latest replica. As a protection against further failures, a "Gold Copy" (another copy of replica device) of the replica device should be created to preserve a copy of data in the event of failure or corruption of the replica devices. After the issue has been resolved, the data from the replica devices can be restored back to the production devices.

  Full-volume replicas (both full-volume mirrors and pointer-based in Full Copy mode) can be restored to the original source devices or to a new set of source devices. Restores to the original source devices can be incremental, but restores to a new set of devices are full volume copy operations.

  In pointer-based virtual and pointer-based full-volume replication in CoFA mode, access to data on the replica is dependent on the health and accessibility of the source volumes. If the source volume is inaccessible for any reason, these replicas cannot be used for a restore or a restart operation. EMC E10-001 Student Resource Guide. Module 11: Local Replication

• Question 127:

  Click on the calculator icon in the upper left corner.

  A stripe depth of 64 KB has been assigned to a five-disk RAID 0 set. What is the stripe size?

  A. 64 KB
  B. 128 KB
  C. 256 KB
  D. 320 KB
  D. 320 KB

• Question 128:

  Which SAN security mechanism will prevent a switch port from being enabled even after a switch reboot?

  A. Persistent Port Disable
  B. Port Binding
  C. Port Lockdown
  D. Persistent Switch Disable
  A. Persistent Port Disable

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  Securing FC Switch Ports Apart from zoning and LUN masking, additional security mechanisms, such as port binding, port lockdown, port lockout, and persistent port disable, can be implemented on switch ports. Port binding: Limits the devices that can attach to a particular switch port and allows only the corresponding switch port to connect to a node for fabric access. Port binding mitigates but does not eliminate WWPN spoofing.

  Port lockdown and port lockout: Restrict a switch port's type of initialization. Typical variants of port lockout ensure that the switch port cannot function as an E-Port and cannot be used to create an ISL, such as a rogue switch. Some variants

  ensure that the port role is restricted to only F- Port, E-Port, or a combination of these.

  Persistent port disable: Prevents a switch port from being enabled even after a switch reboot.

  EMC E10-001 Student Resource Guide

  Module 14: Securing the Storage Infrastructure

• Question 129:

  An organization has deployed physical servers at a remote site that is dissimilar from the servers deployed at their primary site. In the event of a disaster, which solution will enable the server O/S, hardware, and application settings at the primary site to be restored at the remote site?

  A. Server configuration backup
  B. Server online backup
  C. Guest-level O/S backup
  D. Server-initiated backup
  A. Server configuration backup

• Question 130:

  In which cloud service model does the consumer have control over deployed applications but NOT over databases and operating systems?

  A. IaaS
  B. AaaS
  C. PaaS
  D. SaaS
  C. PaaS

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  Platform-as-a-Service

  

  The capability provided to the consumer is to deploy onto the cloud infrastructure consumer- created or acquired applications created using programming languages, libraries, services, and tools supported by the provider. The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, or storage, but has control over the deployed applications and possibly configuration settings for the application-hosting environment.

  PaaS is also used as an application development environment, offered as a service by the cloud service provider. The consumer may use these platforms to code their applications and then deploy the applications on the cloud. Because the workload to the deployed applications varies, the scalability of computing resources is usually guaranteed by the computing platform, transparently. Google App Engine and Microsoft Windows Azure Platform are examples of PaaS. EMC E10-001 Student Resource Guide. Module 13: Cloud Computing