tweets from Twitter in very high velocity and volume, buffer them in memory channel (maybe do
some aggregation since we're getting JSONs) and eventual y sink them into HDFS.
Reference:
https://www.tutorialspoint.com/apache_flume/fetching_twitter_data.htm
QUESTION: 10
Your customer uses LDAP for centralized user/group management.
How wil you integrate permissions management for the customer's Big Data Appliance into the
existing architecture?

A. Make Oracle Identity Management for Big Data the single source of truth and point LDAP to
its keystore for user lookup.
B. Enable Oracle Identity Management for Big Data and point its keystore to the LDAP directory
for user lookup.
C. Make Kerberos the single source of truth and have LDAP use the Key Distribution Center for
user lookup.
D. Enable Kerberos and have the Key Distribution Center use the LDAP directory for user
lookup.

Answer(s): D
Explanation:
Kerberos integrates with LDAP servers - allowing the principals and encryption keys to be
stored in the common repository.
The complication with Kerberos authentication is that your organization needs to have a
Kerberos KDC (Key Distribution Center) server setup already, which will then link to your
corporate LDAP or Active Directory service to check user credentials when they request a
Kerberos ticket.
Reference:
https://www.rittmanmead.com/blog/2015/04/setting-up-security-and-access- control-on-a-big-
data-appliance/
QUESTION: 11
Which three pieces of hardware are present on each node of the Big Data Appliance? (Choose
three.)

A. high capacity SAS disks
B. memory
C. redundant Power Delivery Units
D. InfiniBand ports
E. InfiniBand leaf switches

Answer(s): A, B, D
Explanation:
Big Data Appliance Hardware Specification and Details, example:
Per Node:
Reference:
http://www.oracle.com/technetwork/server-storage/engineered- systems/bigdata-
appliance/overview/bigdataappliancev2-datasheet-1871638.pdf
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