EMC E20-655 Online Practice Questions and Exam Preparation

EMC E20-655 Online Questions & Answers

• Question 1:

  During a cluster split which log file, on each node, does the cluster update?

  A. /var/log/messages
  B. /var/crash
  C. /ifs/data/Isilon_Support
  D. /var/journal
  A. /var/log/messages

• Question 2:

  What is the purpose of a MIB?

  A. To describe SNMP subsystem data
  B. To enable analysis of system events
  C. To provide compatibility with SNMP
  D. To diagnose node and cluster failures
  A. To describe SNMP subsystem data

• Question 3:

  What background process provides data collection for the "isi statistics" command?

  A. isi_stat_d
  B. isi_celog_notification
  C. isi_history_d
  D. isi_job_d
  A. isi_stat_d

• Question 4:

  The customer has configured a file pool policy on their OneFS 7.0 cluster to place files over 30 days old in the archive tier with a file protection of N+3. The customer attempts to verify the file location and protection setting on a file matching the file pool policy criteria using the isi get -DD command. The file is located on the performance tier and has a requested protection setting of N+2:1.

  What is the most likely cause of the issue?

  A. The order of the file pool policies
  B. The default policy overrides the file pool policy
  C. The AutoBalance job is paused
  D. The FlexProtect job failed to complete
  A. The order of the file pool policies

• Question 5:

  How many SIP addresses are allowed per Isilon cluster subnet?

  A. One
  B. Two
  C. Eight
  D. Depends on the number of nodes
  A. One

• Question 6:

  A customer has sent you a very large log set. You want to investigate the messages logs in the ./messages folder in a log set for the last group change. If the cluster name is "Isilon-1", what command could be used to search inside these logs for a search string "group"?

  A. cat Isilon-1-* | grep -i group | tail
  B. grep group Isilon-1-*
  C. tail -1 Isilon-1-* | grep group
  D. cat * | grep group
  A. cat Isilon-1-* | grep -i group | tail

• Question 7:

  What resource(s) are available to explain event types by code?

  A. OneFS Event Reference guide and web administration interface help
  B. OneFS Event Reference guide only
  C. main pages and web administration interface help
  D. isi events show command
  A. OneFS Event Reference guide and web administration interface help

• Question 8:

  You have a 6 node cluster consisting of 3 identical S nodes and 3 Identical NL nodes. The S nodes each have 3 SSD drives for metadata acceleration of the data in the S node pool. You SSH into the cluster and login as root. You run the command isi job status and see that a FlexProtect job is currently running.

  What could this indicate?

  A. A disk failure has occurred on the cluster
  B. The NVRAM batteries in one of the nodes have failed
  C. The cluster has lost quorum
  D. Metadata is being migrated from hard drives to SSD drives
  A. A disk failure has occurred on the cluster

• Question 9:

  Which capability does the "isi_nodes" command provide?

  A. Displays customized node information
  B. Integrates OneFS with UNIX commands
  C. Enables cluster wide execution of single node commands
  D. Provides code configuration capabilities
  D. Provides code configuration capabilities

• Question 10:

  How is the job engine's coordinator designated?

  A. The job daemons on each node attempt to lock a file and the one that succeeds becomes the coordinator.
  B. The nodes share performance data with the job daemons and the daemon on the node with the lightest load becomes the coordinator.
  C. The storage administrator selects a node to run the coordinator based on the cluster architecture.
  D. The job daemons generate random numbers, and the one that generates the lowest number becomes the coordinator.
  A. The job daemons on each node attempt to lock a file and the one that succeeds becomes the coordinator.