Explanation/Reference:
The CellCLI utility supports command-line history.
Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.
The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.
References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server-cellcli.htm

A: Creating a Table with Advanced Row Compression
The following example enables advanced row compression on the table orders:
CREATE TABLE orders ... ROW STORE COMPRESS ADVANCED;
B: ARCHIVE LOW compression (Exadata only), recommended for Archival Data with Load Time as a critical factor

The Cisco Catalyst 4948 Ethernet switch is supplied with the Oracle Exadata Rack.
D: Figure: Running the Subnet Manager in Different Rack Configurations

References:
https://docs.oracle.com/cd/E18476_01/doc.220/e18478/GUID-9FF8B5B0-3481-4B73-89D3-
108CBD7EB989.htm#ELMOG76346
http://docs.oracle.com/cd/E80920_01/DBMIN/configuring-exadata.htm#DBMIN21274

CD: That data remains compressed not only on disk, but also remains compressed in the
Exadata Smart Flash Cache, on Infiniband, in the database server buffer cache, as well as when doing back-ups or logshipping to Data Guard.
E (not B): Use the Write-Back Flash Cache feature to leverage the Exadata Flash hardware and make Exadata Database Machine a faster system for Oracle Database Deployments.
Write-through cache mode is slower than write-back cache mode.
However, write-back cache mode has a risk of data loss if the Exadata Storage Server loses power or fails.
F: Storage indexes are not stored on disk; they are resident in the memory of the storage cell servers.

B: You can configure SNMP Trap Destinations for the Exadata Storage Servers with the following command:
# cellcli -e "alter cell snmpSubscriber=(host ='ASR-Manager-name-or-IP- address',port=162,community=public,type=asr)" D: Exadata Storage Server plug-in This extends the monitoring of exadata cells in addition to providing a GUI interface. The plug-in uses an SSH connection to the cellmonitor user on the cells and uses list commands only. This is for interactive monitoring.
One may also set thresholds using the plug-in which are distinct from any thresholds set using cellcli utility as the celladmin user. For alerts to be sent to the plug-in, SNMP traps are used as follows:
Cell ILOM alerts are sent to the cell Management Server (MS) via an SNMP trap. The MS then send SNMP notifications onward to the plug-in.
Cell alerts flagged by MS itself, such as cell thresholds being exceeded, or ADR software alerts, are sent to the plug-in using SNMP.
E: Database Server ILOM plug-in
Monitoring databases and their instances, ASM environments, the Grid Infrastructure, and the host software environment are done by Enterprise Manager in the usual way as these are standard targets. But monitoring the hardware for the database servers requires the ILOM plug-in, as there is no Management Server (MS) on the database servers to receive SNMP traps from the ILOM. The plug-in will receive sensor state and availability data from the ILOM including alerts based on pre-set ILOM thresholds.
References:
https://dbatrain.wordpress.com/2011/06/
http://docs.oracle.com/cd/E21659_01/html/E21660/z40015671004046509.html