EMC E20-655 Online Practice Questions and Exam Preparation

EMC E20-655 Online Questions & Answers

• Question 41:

  What are SNMP traps?

  A. Messages reporting a condition, sent from the SNMP agent to the SNMP manager
  B. Messages requesting reports, sent from the SNMP manager to the SNMP agent
  C. Messages generated by the SNMP manager when it can no longer contact the SNMP agent
  D. Messages generated by the SNMP agent when it can no longer contact the SNMP manager
  A. Messages reporting a condition, sent from the SNMP agent to the SNMP manager

• Question 42:

  A customer has a 10 node cluster running OneFS 6.5.5.5. They want to upgrade to the latest OneFS 7.1.x.x in a one hour maintenance window. What is their only option?

  A. A simultaneous upgrade to the latest OneFS 7.1.x.x
  B. A rolling upgrade to the latest OneFS 6.5.5.x, followed by a rolling upgrade to the latest OneFS 7.1.x.x
  C. A rolling upgrade straight to the latest OneFS 7.1.x.x
  D. A simultaneous upgrade to the latest OneFS 6.5.5.x, followed by a simultaneous upgrade to the latest OneFS 7.1.x.x
  A. A simultaneous upgrade to the latest OneFS 7.1.x.x

• Question 43:

  What is the purpose of an incremental log gather?

  A. To gather only additional log data since the last full gather.
  B. To gather each node in sequence incrementally.
  C. To gather logs and increment by date.
  D. To gather current logs and all past tarballs of logs in order.
  A. To gather only additional log data since the last full gather.

• Question 44:

  What is the purpose of the isi_sysctl_cluster command?

  A. Make sysctl changes persistent
  B. Display sysctls for all the nodes in the cluster
  C. Start the sysctl configuration command line wizard
  D. Search for failed sysctl modification attempts
  A. Make sysctl changes persistent

• Question 45:

  You are supporting a customer's cluster with 3 node pools consisting of 10 S200 nodes, 18 X400 nodes, and 30 NL400 nodes. The customer is going to write a large number of 4MB files to the X400 node pool. The customer is very concerned about minimizing the amount of overhead. Which setting would be best for minimizing the amount of overhead?

  A. N+2:1 or N+2 have the same amount of overhead.
  B. N+2:1 will have less overhead.
  C. I/O optimization should be set to Random.
  D. I/O optimization should be set to Streaming
  A. N+2:1 or N+2 have the same amount of overhead.

• Question 46:

  What is an important consideration when upgrading a cluster from OneFS 6.5.x.x to OneFS 7.0.x.x?

  A. Disk pools may need to be reconfigured.
  B. SmartConnect may need to be reconfigured.
  C. SnapshotIQ may need to be reconfigured.
  D. SmartQuotas will have to be reset.
  A. Disk pools may need to be reconfigured.

• Question 47:

  Which log file contains information about possible drive errors?

  A. isi_radish.log
  B. diskpools.log
  C. isi_hdfs_d.log
  D. isi_hwmon.log
  A. isi_radish.log

• Question 48:

  What is the difference between a rolling upgrade and a simultaneous upgrade?

  A. A simultaneous upgrade reboots all nodes at the same time after upgrade. And a rolling upgrade will reboot each node in sequence after upgrading it.
  B. A rolling upgrade will upgrade OneFS and then the firmware. And a simultaneous upgrade does both at the same time.
  C. A rolling upgrade requires a reboot confirmation to proceed while a simultaneous upgrade starts with the lowest LNN.
  D. A simultaneous upgrade reboots all nodes before the upgrade and a rolling upgrade reboots each node after upgrade.
  A. A simultaneous upgrade reboots all nodes at the same time after upgrade. And a rolling upgrade will reboot each node in sequence after upgrading it.

• Question 49:

  A customer has an Isilon cluster with a substantial video editing workload. They ask you how they can create a custom job to archive older data to NL nodes. What should be your response?

  A. Custom jobs cannot be created. Implement a SmartPools file policy.
  B. Work with Professional Services to implement a custom job.
  C. The job engine can be custom programmed in python.
  D. Schedule AutoBalance to run more frequently.
  A. Custom jobs cannot be created. Implement a SmartPools file policy.

• Question 50:

  When setting up SmartConnect initially in DNS, what type of record needs to be created for a SmartConnect Zone?

  A. NS
  B. MX
  C. A
  D. AAAA
  A. NS