EMC E10-001 Online Practice Questions and Exam Preparation

EMC E10-001 Online Questions & Answers

• Question 101:

  In a NAS environment, what is a role of the Kerberos protocol?

  A. Contain ACLs that specify access rights for files/folders
  B. Authenticate clients using the CHAP protocol
  C. Allow clients to prove their identity to the servers
  D. Set up a virtual private network connection
  C. Allow clients to prove their identity to the servers

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  Kerberos - Network Authentication Protocol Kerberos is a network authentication protocol, which is designed to provide strong authentication for client/ server applications by using secret-key cryptography. It uses cryptography so that a client and server can prove their identity to each other across an insecure network connection. After the client and server have proven their identities, they can choose to encrypt all their communications to ensure privacy and data integrity. In Kerberos, authentications occur between clients and servers. The client gets a ticket for a service and the server decrypts this ticket by using its secret key. Any entity, user, or host that gets a service ticket for a Kerberos service is called a Kerberos client. The term Kerberos server generally refers to the Key Distribution Center (KDC). The KDC implements the Authentication Service (AS) and the Ticket Granting Service (TGS). The KDC has a copy of every password associated with every principal, so it is absolutely vital that the KDC remain secure. In Kerberos, users and servers for which a secret key is stored in the KDC database are known as principals. EMC E10-001 Student Resource Guide. Module 14: Securing the Storage Infrastructure

• Question 102:

  What is an accurate statement about pointer-based full-volume replication?

  A. Target device is at least as large as the source device
  B. Target device requires only a fraction of the space used by the source device
  C. Target device is accessible only after full replication is completed
  D. Target device and source device should be on different storage arrays
  A. Target device is at least as large as the source device

• Question 103:

  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 the upper-bound?

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

• Question 104:

  The following represents a list of RAID levels and application characteristics. Match each RAID level to the application characteristic to which it is most suitable.

  Select and Place

  

  

• Question 105:

  What is a characteristic of triangle/multitarget replication?

  A. Failover can occur to either of the two remote sites
  B. Distance between all sites must be less than 125 km
  C. Bunker site must be in sync with the remote site at all times
  D. Only the production site is available during normal operations
  A. Failover can occur to either of the two remote sites

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  Three-site triangle/multitarget replication

  

  In three-site triangle/multitarget replication, data at the source storage array is concurrently replicated to two different arrays at two different sites, as shown in the figure on the slide. The source-to-bunker site (target 1) replication is synchronous with a near-zero RPO. The source-to-remote site (target 2) replication is asynchronous with an RPO in the order of minutes. The distance between the source and the remote sites could be thousands of miles. This implementation does not depend on the bunker site for updating data on the remote site because data is asynchronously copied to the remote site directly from the source. The triangle/multitarget configuration provides consistent RPO unlike cascade/multihop solutions in which the failure of the bunker site results in the remote site falling behind and the RPO increasing. The key benefit of three-site triangle/multitarget replication is the ability to failover to either of the two remote sites in the case of source-site failure, with disaster recovery (asynchronous) protection between the bunker and remote sites. Disaster recovery protection is always available if any one-site failure occurs. EMC E10-001 Student Resource Guide. Module 12: Remote Replication

• Question 106:

  Why does a restore operation need to communicate with the backup server?

  A. Locate the data to be restored using the backup catalog
  B. Determine the RTO of the backup save set
  C. Run the restore automatically according to a schedule
  D. Determine the RPO of the backup save set
  A. Locate the data to be restored using the backup catalog

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  Recovery Operation

  

  After the data is backed up, it can be restored when required. A restore process must be manually initiated from the client. Some backup software has a separate application for restore operations. These restore applications are usually

  accessible only to the administrators or backup operators.

  Figure on the slide depicts a restore operation.

  Upon receiving a restore request, an administrator opens the restore application to view the list of clients that have been backed up. While selecting the client for which a restore request has been made, the administrator also needs to identify

  the client that will receive the restored data. Data can be restored on the same client for whom the restore request has been made or on any other client. The administrator then selects the data to be restored and the specified point in time to

  which the data has to be restored based on the RPO. Because all this information comes from the backup catalog, the restore application needs to communicate with the backup server.

  The backup server instructs the appropriate storage node to mount the specific backup media onto the backup device. Data is then read and sent to the client that has been identified to receive the restored data.

  Some restorations are successfully accomplished by recovering only the requested production data. For example, the recovery process of a spreadsheet is completed when the specific file is restored. In database restorations, additional data,

  such as log files, must be restored along with the production data. This ensures consistency for the restored data. In these cases, the RTO is extended due to the additional steps in the restore operation. EMC E10-001 Student Resource

  Guide. Module 10: Backup and Archive

• Question 107:

  What is a characteristic of a single-mode optical fiber cable?

  A. Carries a single ray of light projected at the center of the core
  B. Carries a single ray of light at any angle onto the core
  C. Carries a single ray of light at either a 7 or 11 degree angle onto the core
  D. Carries multiple beams of light through a single core
  A. Carries a single ray of light projected at the center of the core

• Question 108:

  Click on the calculator icon in the upper left corner.

  An application uses 20, 10 GB devices. A pointer-based full volume replica of the application is required every 6 hours. Each replica will be kept for 24 hours. The data changes by 10% every 4 hours.

  How many replica devices are required?

  A. 20
  B. 60
  C. 80
  D. 120
  C. 80

• Question 109:

  What describes a recovery point objective?

  A. Point-in-time to which systems and data must be recovered after an outage
  B. Time within which systems and applications must be recovered after an outage
  C. Amount of downtime that a business can endure and survive after an outage
  D. Minimum amount of infrastructure required to run business operations after an outage
  A. Point-in-time to which systems and data must be recovered after an outage

• Question 110:

  What is a key reason for using an IP SAN?

  A. Reduced cost compared to investing in new FC SAN hardware and software
  B. Latest IP networks facilitate both file-level and block-level access
  C. Support for up to 15 million devices over a single network
  D. Leverage existing security mechanisms of an FC SAN in an IP SAN environment
  A. Reduced cost compared to investing in new FC SAN hardware and software