AB: Oracle recommends that you install Oracle ASR Manager on an external, standalone server. This server receives fault telemetry information from Oracle Exadata Database Machine servers. This server must run an Oracle Solaris or Linux operating system.
G: Before installing Oracle Auto Service Request (Oracle ASR) you must ensure connectivity to the Internet using HTTPS.
References:
Oracle Auto Service Request Exadata Database Machine Quick Installation Guide
http://docs.oracle.com/cd/E80920_01/ASXQI/toc.htm#GUID-89192315-1B1A-4B5A-89BB-94BB5B6ABB05

Explanation/Reference:
Whether you get a direct path read & smart scan, depends on the current buffer cache size, how big segment you're about to scan and how much of that segment is actually cached at the moment. This dynamic decision unfortunately can cause unexpected surprises and variance in your report/batch job runtimes.
To work around these problems and force a direct path read/smart scan, you can either:
(B) Run your query in parallel as parallel full segment scans will use direct path reads, unless your

parallel_degree_policy = AUTO, then you may still get buffered reads thanks to the dynamic in-memory parallel execution decision of Oracle 11.2
(C) Run your query in serial, but force the serial direct path reads by setting _serial_direct_read

TRUE (or ALWAYS in 11.2.0.2+)
D: One of the most common Exadata performance problems is that the direct path reads (and thus also Smart Scans) don't sometimes kick in when running full scans in serial sessions.
Note: Smart Scan is a subset of Cell Offload Processing and is perhaps the feature that is most highly associated with Exadata. Smart Scan allows Oracle databases to push query information down to the storage level, specifically:
Filtration (predicate information)

Column Projection

Join Filtering

Incorrect Answers:
F: Objects such as clusters and index organized tables cannot be Smart Scanned.
References: http://blog.tanelpoder.com/2013/05/29/forcing-smart-scans-on-exadata-is-_serial_direct_read- parameter-safe-to-use-in-production/

DBFS SecureFiles Store Capabilities include support for file system snapshots.
Oracle ACFS includes advanced features such as file system snapshot.
References:
http://www.oracle.com/technetwork/ru/database/dbfs-sf-oow2009-v2-160969.pdf
http://www.oracle.com/technetwork/database/database-technologies/cloud-storage/benefits-of-oracle-acfs-
2379064.pdf

A: Each disk in the Exadata storage cell is divided into equal sized pieces called storage regions (default 1MB). There is an index entry for every storage regions (1MB of data stored on disk). Each entry contains the minimum and maximum value for columns seen in 'where' clause predicates. Information for up to 8 columns can be stored. The index is then used to eliminate disk IO by identifying which storage regions don't match the 'where' clause of a query.

B: Rules in an interdatabase resource plan specify allocations to databases, not consumer groups.
E: Redo and control file writes always take precedence.