E20-655 Online Practice Questions and Answers

You run the command "isi get -DD /ifs/data/foo.txt" on a 4 node cluster. The displayed results indicate a protection level of 6+2/2. What statement best describes 6+2/2?

A. Protection level of N+2:1; Contains 6 data stripes units and 2 FEC stripe units; Written to 2 drives per node

B. Protection level of N+2:1; Contains 8 data stripe units and 2 FEC stripe units; Written to 2 drives per node

C. Protection level of N+2: Contains 8 data stripe units and 2 FEC stripe units; Written to 1 drive per node

D. Protection level of N+1: Contains 6 data stripe units and 1 FEC stripe unit; Written to 1 drive per node

In a 4-node cluster using N+3:1 protection, how much is the overhead?

A. 25%

B. 50%

C. 300%

D. 100%

The SmartPools settings of your cluster are set to Protection management: Including File with manually-managed protection settings is not checked.

How can the protection settings be modified?

A. Using File System Explorer in the web administration interface or the isi set command

B. Only by using File System Explorer in the web administration interface

C. Only by using the isi set command

D. Manually starting the SmartPools job

What element of the command syntax: "isi sync policies modify exam_policy1 --log-level error" is "policies"?

A. Subcommand

B. Command

C. Argument

D. Action

What is the expected displayed output after running "isi devices -d 3"?

A. Displays the bay, Lnum, da, Serial number, and health status for each drive in node 3.

B. Displays the individual detailed status information for drive 3 on each node in the cluster

C. Displays the individual detailed status information for drive 3 on the node you are connected to

D. Displays the drive controller status and individual drive connectivity status for node 3

Your customer has installed a series of new nodes, and wishes to remove the old node 6 now that the installation is complete. Which command should be used to perform this task cleanly?

A. isi devices -a smartfail -d 6

B. isi_reformat_node -d 6

C. isi_reimage -d 6

D. isi config > remove 6

What is a potential result of increasing the level of logging detail on your cluster?

A. You could affect the performance of the cluster.

B. You could fill up the limited space in the /tmp directory.

C. There is no way to do this without recompiling the kernel.

D. You will create an unsupported condition on the cluster.

What does the job engine do?

A. It schedules and distributes jobs across the entire cluster.

B. It ensures that all jobs continue running on an ongoing basis.

C. It runs jobs from node to node based on the impact level of each job.

D. It uses the cron daemon on each node to schedule periodic jobs across the cluster.

A customer has a cluster on which round robin link aggregation has been implemented. The customer reports that throughput has decreased since implementation. What is the likeliest explanation for the result?

A. Packets may arrive out of order and need reordering at the client side.

B. Packets are being lost on each node's second interface and need retransmission.

C. The client side also needs to be configured to handle round robin link aggregation.

D. The switch needs to reroute each alternating packet, introducing latency.

You have been asked to configure SmartConnect basic on an Isilon cluster. Which load balancing connection policy should be configured?

A. Round Robin

B. Connection Count

C. Network Throughput

D. CPU Usage