EMC E20-555 Online Practice Questions and Exam Preparation

EMC E20-555 Online Questions & Answers

• Question 201:

  An Isilon customer has set up a replication policy between a primary cluster and a secondary cluster. After the initial synchronization of the clusters, the primary cluster starts to display some issues. The customer initiates a failover operation

  between the two clusters.

  During the failover, the primary cluster becomes fully operational again. The customer wants to stop the failover operation between the two clusters.

  What is the best way to stop the failover operation and continue using the primary cluster?

  A. Initiate a failover revert on the secondary cluster
  B. Initiate a failover revert on the primary cluster
  C. Nothing; this is an automatic process
  D. Delete the primary clusters' snapshot of this data
  A. Initiate a failover revert on the secondary cluster

• Question 202:

  A customer experiences a system failure on an Isilon storage node.However, the disk drives in the node are not affected. What is the preferred method for restoring cluster integrity?

  A. Engage EMC support to perform a Disk Tango process to move drives, journal, and boot volumes to a replacement chassis
  B. Allow OneFS to proceed with its automatic SmartFail process to re-protect the failed node
  C. Migrate the disks from the failed node into spare drive bays on other nodes
  D. Initiate a manual SmartFail process on the node as it is not started automatically
  A. Engage EMC support to perform a Disk Tango process to move drives, journal, and boot volumes to a replacement chassis

• Question 203:

  An architect is designing a new cluster. The cluster contains H500 nodes to store home directories of 2000 users and A200 nodes to store backups of VMware virtual machines. Which data access patterns should be used?

  A. Streaming for the H500 nodes Random for the A200 nodes
  B. Streaming for the H500 nodes Concurrency for the A200 nodes
  C. Concurrency for the H500 nodes Streaming for the A200 nodes
  D. Random for the H500 nodes Streaming for the A200 nodes
  A. Streaming for the H500 nodes Random for the A200 nodes

• Question 204:

  Your customer purchased an Isilon cluster with eight X400 nodes for Home Directories. Your follow-up discussions have uncovered an opportunity to expand the cluster to support the Legal Department. As you prepare to complete the Workflow Profile Document, you meet with the customer to discuss data protection.

  Which key areas should you address?

  A. Default Cluster Protection Level Additional Directory Level Protections Snapshots and Replication
  B. WORM requirements Network ports for replication Snapshots for user restores
  C. Default Cluster Protection Level Backup Windows and Processes Concurrency of user access
  D. Protocols (SMB, NFS, FTP, HTTP, HDFS) Authentication and Directory Services Performance and Latency Concerns
  A. Default Cluster Protection Level Additional Directory Level Protections Snapshots and Replication

• Question 205:

  Which tool is used to perform a cluster-wide kernel configuration change on an Isilon Gen 6 cluster?

  A. sysct1
  B. isi_tardis
  C. isi_for_array
  D. gconfig
  A. sysct1

• Question 206:

  You will be meeting with the Corporate Security Team as part of the implementation planning for a new Isilon cluster deployment. The Lead Security Analyst has asked you to discuss the Authentication Sources on your Isilon Cluster. What customer questions regarding Isilon-supported Authentication Sources do you need to be prepared to answer?

  A. What mechanism are you using for NFS authentication? Do you have multiple AD domain support? What versions of LDAP are supported?
  B. Are you using File Services for UNIX in your AD environment? Do you support NIS+ for NFS authentication? Do you support multiple Access Zones connecting to the AD Domain?
  C. What mechanism are you using for NFS authentication? Do you support Novell Directory Services? What flavor of LDAP is supported?
  D. Is the cluster x.400 compliant? What firewall rules are in place to prevent data leakage? Is there a audit trail for access zone configuration changes?
  A. What mechanism are you using for NFS authentication? Do you have multiple AD domain support? What versions of LDAP are supported?

• Question 207:

  DRAG DROP

  A customer is trying to read data from Node 1 to Node 5 in an Isilon cluster. The two Isilon nodes have the same content in the private caches. Cached data is consistent across both instances. What is the correct sequence of steps that OneFS uses to ensure that all data is consistent across the entire shared cache?

  Select and Place:

  

  

• Question 208:

  A customer has two Isilon clusters in an Active-Passive setup. The customer has latency sensitive media editing workflows. Most of the media editing work occurs prior to broadcasting between 7:00-8:00, 11:00-12:00, 17:00-18:00 and 19:00

  20:00.

  What should be recommended to minimize the risk of including latency to the client workflow?

  A. Retain the default job impact policies that would run the Job Engine jobs. Do not run SyncIQ policies during the given hours.
  B. Create and set a custom job impact policy that would exclude the running SyncIQ policies during the given hours.
  C. Create and set a custom job impact policy that would exclude the running of the Job Engine jobs. Do not run SyncIQ policies during the given hours.
  D. Retain the default job impact policies that would run the Job Engine jobs. Run SyncIQ policies during the given hours.
  C. Create and set a custom job impact policy that would exclude the running of the Job Engine jobs. Do not run SyncIQ policies during the given hours.

• Question 209:

  Your customer has an Isilon Gen 6 cluster with eight H400 nodes. During an unexpected power outage some of the nodes go offline simultaneously.

  How many nodes need to remain up and communicating over the backend network to maintain a quorum in the cluster and still enable write access to the OneFS file system?

  A. 2
  B. 4
  C. 5
  D. 6
  B. 4

• Question 210:

  By default, which method is used by Isilon OneFS for SSDs?

  A. Metadata read acceleration
  B. Metadata read/write acceleration
  C. Data on SSDs
  D. Avoid SSDs
  A. Metadata read acceleration