EMC EMC Certifications E20-655 Questions & Answers

• Question 21:

  Which statement best describes an advantage of the link aggregation control protocol (LACP)?

  A. Balances outgoing traffic across the active ports and accepts traffic from any active port

  B. Next active port in link becomes new master port if original master port becomes unavailable

  C. The only aggregation method that can increase single stream performance

  D. Does per packet load balancing across aggregated links

  Correct Answer: A

• Question 22:

  What are the five aggregation types available to aggregate network links on Isilon?

  A. LACP, Legacy FEC, EtherChannel (FEC), Active/Passive Failover, Round-Robin Tx

  B. Round-Robin Tx, FEC, Legacy LACP, Active/Passive Failover, Fast Ethernet

  C. 802.3ad, LACP, Legacy FEC, Active/Passive Failover, Round-Robin Tx

  D. EtherChannel (FEC), LACP, Active/Passive Failover, Round-Robin Tx, 802.3ad

  Correct Answer: A

• Question 23:

  Your customer has reported that one of their FastEthernet clients is not getting the same throughput to their cluster as other FastEthernet clients.

  What would be the best troubleshooting step?

  A. Verify the link is operating in full duplex mode

  B. Verify the cable is plugged into the switch

  C. Check for a link light on the port

  D. Check for any sharp bends in the InfiniBand cable

  Correct Answer: A

• Question 24:

  What are the Isilon recommendations for the internal Infiniband network?

  A. 128.221.252.x, 128.221.253.x, 128.221.254.x

  B. 10.1.1.x, 10.2.2.x, 10.3.3.x

  C. 192.168.1.x, 192.168.2.x, 192.168.3.x

  D. 10.x.x.x, 172.16.x.x, 192.168.x.x

  Correct Answer: A

• Question 25:

  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

  Correct Answer: A

• Question 26:

  What file needs to be modified to enable DEBUGing output for InsightIQ?

  A. insightiq.ini

  B. insightiq.conf

  C. autofs

  D. source_record.xml

  Correct Answer: A

• Question 27:

  What type of information is provided by the "isi status" command?

  A. critical events, capacity statistics and usage, hardware status

  B. firmware version, memory usage, disk serial number

  C. warning events, cluster health, voltage status

  D. summarized events, cluster statistics, cluster job status

  Correct Answer: A

• Question 28:

  What is required to run on the Isilon cluster as part of the InsightIQ file data gathering?

  A. FSAnalyze

  B. Collect

  C. PermissionRepair

  D. SmartPools

  Correct Answer: A

• Question 29:

  How much summarized historical performance data can InsightIQ present?

  A. 1 year's worth

  B. 2 years' worth

  C. 6 months' worth

  D. Unlimited

  Correct Answer: A

• Question 30:

  A customer is using IBM's Tivoli Monitoring management software and reports that SNMP data for the Isilon cluster is indecipherable.

  How can this be resolved?

  A. Download Isilon MIBs from the cluster or from Isilon Knowledgebase.

  B. Contact software vendor and request an upgrade to SNMP software

  C. Write a program to convert SNMP numbers to a readable format

  D. Extract records with object identifier of 12124 and process with Excel

  Correct Answer: A