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Exam Oracle Big Data 2016 Implementation Essentials
Number 1z0-449
File Name Oracle.1z0-449.v1-0.1e.38q.vcex
Size 732 Kb
Posted July 24, 2018
Downloads 32



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Demo Questions

Question 1
The NoSQL KVStore experiences a node failure. One of the replicas is promoted to primary. 
How will the NoSQL client that accesses the store know that there has been a change in the architecture?

  • A: The KVLite utility updates the NoSQL client with the status of the master and replica.
  • B: KVStoreConfig sends the status of the master and replica to the NoSQL client.
  • C: The NoSQL admin agent updates the NoSQL client with the status of the master and replica.
  • D: The Shard State Table (SST) contains information about each shard and the master and replica status for the shard.



Question 2
Your customer is experiencing significant degradation in the performance of Hive queries. The customer wants to continue using SQL as the main query language for the HDFS store. 
Which option can the customer use to improve performance? 

  • A: native MapReduce Java programs 
  • B: Impala
  • C: HiveFastQL
  • D: Apache Grunt



Question 3
Your customer keeps getting an error when writing a key/value pair to a NoSQL replica. 
What is causing the error?

  • A: The master may be in read-only mode and as result, writes to replicas are not being allowed.
  • B: The replica may be out of sync with the master and is not able to maintain consistency.
  • C: The writes must be done to the master.
  • D: The replica is in read-only mode.
  • E: The data file for the replica is corrupt.



Question 4
The log data for your customer's Apache web server has seven string columns.  
What is the correct command to load the log data from the file 'sample.log' into a new Hive table LOGS that does not currently exist? 

  • A: hive> CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string) ROW FORMAT
    DELIMITED FIELDS TERMINATED BY ' ';
  • B: hive> create table logs as select * from sample.log;
  • C: hive> CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string) ROW FORMAT
    DELIMITED FIELDS TERMINATED BY ' ';
    hive> LOAD DATA LOCAL INPATH 'sample.log' OVERWRITE INTO TABLE logs;
  • D: hive> LOAD DATA LOCAL INPATH 'sample.log' OVERWRITE INTO TABLE logs;
    hive> CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string) ROW FORMAT
    DELIMITED FIELDS TERMINATED BY ' ';
  • E: hive> create table logs as load sample.1og from hadoop;



Question 5
Your customer’s Oracle NoSQL store has a replication factor of 3. One of the customer’s replica nodes goes down. 
What will be the long-term performance impact on the customer’s NoSQL database if the node is replaced?

  • A: There will be no performance impact.
  • B: The database read performance will be impacted.
  • C: The database read and write performance will be impacted.
  • D: The database will be unavailable for reading or writing.
  • E: The database write performance will be impacted.



Question 6
Your customer is using the IKM SQL to HDFS File (Sqoop) module to move data from Oracle to HDFS. However, the customer is experiencing performance issues. 
What change should you make to the default configuration to improve performance?

  • A: Change the ODI configuration to high performance mode.
  • B: Increase the number of Sqoop mappers.
  • C: Add additional tables.
  • D: Change the HDFS server I/O settings to duplex mode.



Question 7
What is the result when a flume event occurs for the following single node configuration? 
   

  • A: The event is written to memory.
  • B: The event is logged to the screen.
  • C: The event output is not defined in this section.
  • D: The event is sent out on port 44444.
  • E: The event is written to the netcat process.



Question 8
What kind of workload is MapReduce designed to handle? 

  • A: batch processing
  • B: interactive
  • C: computational
  • D: real time
  • E: commodity



Question 9
Your customer uses LDAP for centralized user/group management. 
How will 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.



Question 10
Your customer collects diagnostic data from its storage systems that are deployed at customer sites. The customer needs to capture and process this data by country in batches. 
Why should the customer choose Hadoop to process this data?

  • A: Hadoop processes data on large clusters (10-50 max) on commodity hardware.
  • B: Hadoop is a batch data processing architecture.
  • C: Hadoop supports centralized computing of large data sets on large clusters.
  • D: Node failures can be dealt with by configuring failover with clusterware.
  • E: Hadoop processes data serially.








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