oracle data warehousing 11g certified implementation ... · oracle data warehousing 11g certified...

Oracle Data Warehousing 11g Certified Implementation Specialist

Number: 1Z0-515Passing Score: 780Time Limit: 120 minFile Version: 1.0

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Exam Number: 1Z0-515Associated Certifications: Oracle Data Warehousing 11g Certified Implementation Specialist OPN CertifiedSpecialistExam Price: US$ 195Duration: 120 minutesNumber of Questions: 61Passing Score: 78%

Exam A

QUESTION 1Your customer wants to reduce backup volumes by not backing up older data on an ongoing basis. Which typeof partitioning would you recommend for addressing this scenario?

A. Range PartitioningB. Hash PartitioningC. List PartitioningD. RAC

Correct Answer: ASection: (none)Explanation

Explanation/Reference:

QUESTION 2Your BI tool(for example,Oracle Business Intelligence Enterprise Edition Plus, Business Objects,and Cognos) will be used to query an Oracle database that includes the Oracle OLAP Option. What does the BItool generate in submitting queries that might include data stored in relational tables and OLAP cubes?

A. SQLB. PL/SQLC. Proprietary API codeD. SQL for relational and proprietary API code for OLAP



QUESTION 3Your customer wants you to design their data warehouse, and a highly available solution is their top priority.Giving emphasis to this, which feature would you omit from your design?

A. Active Data GuardB. RACC. Global nonpartitioned indexesD. Partitioning

Correct Answer: CSection: (none)Explanation


QUESTION 4You want partitions to be automatically created when data that does not fit into current date ranges is load .Which type of partitioning would you implement?

A. Hash

B. LishC. InvisibleD. Interval

Correct Answer: DSection: (none)Explanation


QUESTION 5How many Exadata Storage Server cells are these in a Full Rack Exadata database machineconfiguration that has 8 Database Server nodes?

A. 2B. 14C. 16D. 24

Correct Answer: BSection: (none)Explanation


QUESTION 6You have analyzed your client`s workload and the Materialized Views Advisor in Enterprise Managerrecommends that you create some materialized views to improve performance. What should you do in order tomost simply implement this change?


A. Rewrite all the queries in the application to identify materialized views.B. Rewrite existing queries. New queries will automatically use the views. C. Respond positively to the Advisor to create the materialized views.D. Build virtual views on a third normal form schema.



QUESTION 7A Full Rack Oracle Exadata Database Machine can contain 100 TB of disk space with highperformance disks. How much user data should you conservatively estimate this configuration can hold?

A. 100 TB B. 75 TB C. 50 TB D. 28 TB E. 20 TB



QUESTION 8Your customer is looking to implement ad-hoc analysis in a data warehouse. Which approach is least likely tobe used assuming that the customer does not want the expense of manage views?

A. Star schemaB. Snowflake schemaC. Third normal form schemaD. OLAP



QUESTION 9What is the difference between an ETL (Extraction Transformation Load) approach and an ELT (ExtractionLoad Transformation) approach to data integration?

A. ETL can operate between heterogeneous data sourceB. ELT requires a separate transformation serverC. ELT transformation data on the target serverD. ELT cannot be used for incremental data loading



QUESTION 10Your customer wants to implement an ILM strategy. The customer must have which option when deployingOracle`s ILM Assistant to implement this strategy?

A. RACB. PartitioningC. OLAPD. Oracle Clusterware

Correct Answer: B

Section: (none)Explanation


QUESTION 11You are looking to size a data warehouse configuration. If the I/O throughput for the CPUs is 25GB/s, the I/O throughput for the HBA is 18 GB/s, and the I/O throughput for the disk subsystem is6 GB/s, what is the overall throughput of the data warehouse?

A. 25 GB/sB. 18 GB/sC. 6 GB/sD. It depends on how many processors are in the servers



QUESTION 12You can use Oracle Data Mining on unstructured data.

A. TRUEB. FALSE



QUESTION 13Identify the indexing technique you would use to minimize partition maintenance.

A. Local indexesB. Global partitioned indexesC. Global nonpartitioned indexesD. Both global partitioned and global nonpartitioned indexes



QUESTION 14Your customer wants to segment their customer`s demographic data into those that use do not use their loyaltycard. What would you recommend?

A. Use Oracle OLAP Option

B. Use Oracle SQL Analytic FunctionsC. Use classification algorithm in Oracle Data MiningD. Use non-negative matrix factorization in Oracle Data Mining



QUESTION 15Your customer wants to use Database Resource Manager to help ensure consistent performance based onusers and operations. In designing this implementation, which limitation cannot be imposed through DatabaseResource Manager?

A. Specifying the maximum number of concurrent operations for a resource groupB. Limiting resource concurrent for a resource groupC. Specifying the amount of parallelism for a resource groupD. Limiting access to particular data for a resource group



QUESTION 16Which is the most important Oracle database feature in enabling near real-time Oracle-based datawarehouses?

A. Oracle Bit-mapped indexesB. Oracle`s multi-version read consistency during data loadingC. Oracle`s Hybrid Columnar CompressionD. Oracle`s Global indexing



QUESTION 17Which can be used in scenarios where are large data loads of a time-sensitive nature into a data warehouse?

A. Direct path loadingB. External tables for loading flat filesC. Partition exchange loadingD. Any of these are valid for certain situations



QUESTION 18You are creating a configuration for a data warehouse, and your server has 4 CPUs, each of which can supporta sustained rate of throughput of 350 MB/s. You are going to use 1/2 Gbit HBAs which can support a sustainedthroughputof 200 MB/s. How many HBAs should you use in the configuration?

A. 2B. 4C. 6D. 7



QUESTION 19Which feature would enable higher availability during maintenance operations while also improving queryresponse performance?

A. PartitioningB. Materialized viewsC. Bitmap IndexingD. OLAP



QUESTION 20What are three advantage provided by proper partitioning in a data warehouse?

A. Partition pruning will occurB. Faster sortingC. Efficient parallel joins D. Efficient data loadingE. Reduced disk usage

Correct Answer: ACDSection: (none)Explanation


QUESTION 21The Analytic Workspace Manager would be used to generate

A. Materialized viewsB. Oracle OLAP Option cubesC. Oracle Data Mining algorithmsD. Oracle SQL Analytic functions



QUESTION 22You want to enable result set caching to quickly see if this feature will help the performance of your application.Which is the quickest way to make this determination?

A. Set RESULT_CACHE_MODE=FORCE in the initialization fileB. Set RESULT_CACHE=ENABLE in the initialization fileC. Set RESULT_CACHE_MAX_SIZE=0D. Set RESULT_CACHE= ENABLE in the initialization file and use a RESULT_CACHE hint in queries



QUESTION 23What is the estimated maximum speed of data loads for a Quarter Rack with the Exadata Storage Server?

A. 1 TB/hr B. 2 TB/hr C. 4 TB/hr D. 5 TB/hr



QUESTION 24You want to create an optimally data warehouse configuration for your customer. Which way of creating ahardware configuration will reduce the implementation time the most?

A. Use reference configurations or an appliance-like configurationB. Use the existing system and add on relevant componentsC. Customize a configuration from a vendorD. Build the system from scratch



QUESTION 25How can you implement near real-time data integration with Oracle Data Integrator?

A. By accessing Change Data Capture records from logsB. By using Exchange PartitionC. By mining Oracle UNDO segmentsD. By reading operation system logs



QUESTION 26Which two statements are true about the advantages of using a data warehouse?

A. A data warehouse uses fewer database structures, so access to answers is faster and easierB. A data warehouse is typically implemented with a different design, making access fasterC. A data warehouse is optimized for ongoing write activity, making response fasterD. A data warehouse uses specialized features of the Oracle database, like materialized views and star

transformations, making response faster

Correct Answer: ADSection: (none)Explanation


QUESTION 27A data warehouse uses specialized features of the Oracle database, like materialized views and startransformations, making response faster

A. Reusable code templates for Oracle Data Integrator B. Prebuilt applications for Oracle Business Intelligence C. Options for Oracle Enterprise ManagerD. Algorithms for data mining



QUESTION 28What data can you compress using Advanced Compress in Oracle Database 11G?

A. Read-only data

B. Data that can be updated, inserted and/or deleted (DML)C. Only data being archivedD. Data warehousing data



QUESTION 29What would you do to compress data in partitions that are frequently updated in Oracle Database 11g?

A. Use Hybrid Columnar Compression B. Use Advanced Compression Option C. Use Hybrid PartitionsD. Avoid compressing any data



QUESTION 30Identify the statement about Oracle OLAP that is NOT true

A. Oracle OLAP cubes are stored in the Oracle relational databaseB. Oracle OLAP uses standard Oracle database securityC. Meta data for Oracle OLAP is accessible in an external data dictionaryD. Oracle OLAP can be deployed using RAC



QUESTION 31Identify the true statement about adaptive parallelism

A. It is turned on by defaultB. It is turned off by defaultC. You should always leave the default settingD. There is no such thing



QUESTION 32Flash in the Oracle Exadata database Machine is of lower latency (and enables faster access to data ) than:

A. MemoryB. Memory and locally attached diskC. Memory and network-attached diskD. locally attached and network-attached disk



QUESTION 33What two types of results can be cached in the Result Set Cache?

A. Results of an SQL queryB. Results from a PL/SQL functionC. Sequence object resultsD. Result sets derived from data dictionary tables

Correct Answer: ABSection: (none)Explanation


QUESTION 34How does compression affect resource utilization?

A. Reduces the amount of CPU and disk utilizationB. Increases the amount of CPU and disk utilizationC. Reduces the amount of disk but increases CPU utilization for loadingD. Increases the amount of disk but reduces CPU utilization for loading



QUESTION 35Identify the statement about ASM that is NOT true

A. ASM is easier to manage than file systemsB. ASM delivers the performance of raw partitions C. ASM is an extra cost option for Oracle database D. ASM delivers automatic striping and mirroring

Correct Answer: C



QUESTION 36How can you use Oracle Data Mining with Oracle Data House Builder?

A. To identify records to extractB. As a standard transform operationC. To increase write performanceD. To eliminate ETL logging



QUESTION 37What are Oracle Data Integrator templates used for?

A. To model SAP applicationsB. To define how to transform dataC. As reports to monitor ETL activityD. None of these



QUESTION 38Which is not among Oracle SQL Analytic functions included in Oracle Database 11g?

A. Ranking functionsB. Substring functionsC. Window aggregate functionsD. LAG/LEAD functions



QUESTION 39Which statement is true for you to get the benefits of partitions-wise joins?

A. The parent table must be partitioned on the join key and the child table must be partitioned on the join key

B. The parent table must be partitioned on the primary key and the child table must be partitioned on the joinkey

C. The child table must use a reference partitionD. The parent table must be partitioned on the primary key and the child table must use a reference partition



QUESTION 40Which is not an available composite partition in Oracle Database 11g?

A. range-listB. list-listC. list-rangeD. interval-hash



QUESTION 41Identify the control structure that would not be defined as part of a data flow with Oracle Data Integrator?

A. LoopsB. ConditionsC. Error handingD. GOTOs



QUESTION 42How many Exadata Storage Server cells can be used in a grid?

A. 7B. 14C. 28D. No practical limit




QUESTION 43For Data warehousing, identify the benefits that would NOT be provided by the use of RAC.

A. Distribute workload across all the nodesB. Distribute workload to some of the nodesC. Provide parallel query serversD. Provide high availability for all the operations



QUESTION 44Data Guard compresses data:

A. alwaysB. when using logical standbyC. when using physical standbyD. when catching up after a network failure



QUESTION 45Exadata uses smart scans, which are executed in

A. Exadata Storage Server cellsB. Database server node memoryC. Database server node CPUsD. Exadata does not use smart scans



QUESTION 46

What is Oracle’s market share in the data warehousing market?

A. Less than 10%B. 10% to 20% C. 20% to 30%D. Approximately 40%



QUESTION 47What areas can SQL Access Advisor give advice on?

A. Partitioning advice, index advice, and materialized views adviceB. Index advice and compression adviceC. Index advice and data masking adviceD. Partitioning advice and compression advice



QUESTION 48Which two types of result sets found in the Result Set Cache can be used for a query?

A. Complete result setsB. Only result sets that come from a single table or viewC. Result sets that can satisfy a portion of a new queryD. Only result sets that stem from queries that do not contain bind variables

Correct Answer: ACSection: (none)Explanation


QUESTION 49What would you use to evenly distribute data across the disk in your Oracle data warehouse?

A. Range PartitioningB. Automatic Storage Management (ASM) C. List PartitioningD. RAC



QUESTION 50Which unique method of improving performance is NOT used by the Oracle Exadata Database Machine ?

A. Flash to improve query performanceB. Reduce the amount of data required to flow through I/O C. Increases the I/O using InfiniBandD. Performs analysis in a special in-memory database



QUESTION 51Which feature of Oracle Warehouse Builder can be used to help ensure data quality?

A. Data extractionB. Data profilingC. Logical mappingD. Exception reporting



QUESTION 52The most performance way to load data from an external table that will also guarantee direct path load is:

A. Using Create Table as Select (CTAS)B. Using Data pumpC. Using Insert as Select(IAS)D. Using transparent gateways



QUESTION 53Which Oracle option might be encrypt sensitive data in an Oracle data warehouse?

A. Active Data GuardB. Total RecallC. Advanced Security Option

D. Virtual Private Database



QUESTION 54Your customer wants to determine “market baskets.” What do you recommend?

A. Use Oracle OLAP OptionB. Use Oracle SQL Analytic FunctionsC. Use associations algorithm in Oracle Data MiningD. Use regression analysis in Oracle Data Mining



QUESTION 55What are two ways in which query performance can be improved with partitioning?

A. Partitioning pruningB. Partitioning optimization C. Partitioning compression D. Partitioning-wise joins

Correct Answer: ADSection: (none)Explanation


QUESTION 56Why does partitioning help parallelism with RAC?

A. The ability to do partition-wise joins reduces interconnect trafficB. Partitioning allows you to split data storage across nodesC. Partitioning reduces storage requirementsD. RAC will spawn additional parallel servers to meet the needs of requesting applications



QUESTION 57You think that result set caching might provide some benefits for your current data warehouse scenario. you

perform some analysis on the composition of the queries used in the scenario. Identify the result of the analysisthat would indicate the most potential for improvement with result set caching.

A. The scenario consists mainly of queries that are used infrequently.B. The scenario consists mainly of queries that work on data which changes frequentlyC. The scenario consists mainly of queries with long run times and small result setsD. ALL data warehouse scenarios will benefit from result set caching



QUESTION 58For which type of query is the SQL result cache automatically disabled?

A. Queries that access data which changes frequentlyB. Queries that return large amounts of dataC. Queries that use the SQL functions such as SYSDATE D. Queries that are used infrequently



QUESTION 59One goal of your information Lifecycle Management strategy using Oracle’s ILM capabilities is to reduce thecost of online storage. Identify two database options that would help in enabling such a strategy.

A. RAC and Advanced CompressionB. RAC and PartitioningC. Partitioning and Advanced CompressionD. RAC one and Advanced Compression



QUESTION 60Which best describe Oracle’s OLAP Option for Database 11g Release 2?

A. Is stored as relational tables and is considered a ROLAP solutionsB. Uses bitmap indexesC. Physically stores MOLAP cubes as objects within the relational databaseD. Is available both within the Oracle Database and as a stand-alone solution

Correct Answer: C



QUESTION 61Identify the true statement about REF partitions

A. REF partitions have no impact on partition-wise joinsB. Changes to partitions in the parent table are automatically reflected in the child tableC. Changes in the data in a parent table are reflected in a child tableD. REF partitions can save storage space in the parent table



QUESTION 62Identify the benefit of using bitmap join indexes

A. Faster query performance for all queriesB. Reduced space for indexesC. Faster query performance for some queriesD. Lower memory usage



QUESTION 63You will be implementing a data warehouse for one of your customers. In your design process, which indextype is most likely to be used to improve the performance of some queries where the data is of low cardinality?

A. Bitmap indexes B. B*-tree indexes C. Reverse indexes D. Invisible indexes



QUESTION 64You are looking for some general design principles that could be used in designing every large scale datawarehouse you create. Identify the principle that would have the widest applicability.

A. Partition your tables appropriately to produce partition-wise joinsB. always use a star schema snowflake schema designC. Do as much analytics as possible in your BI toolsD. always use Oracle OLAP



QUESTION 65Which questions cannot be addressed by Oracle Data Mining?

A. fraud detectionB. prediction of customer behaviorC. root cause determinationD. identify factors associated with a business problem



QUESTION 66Identify the type of refresh that is not supported by materialized views

A. DeferredB. IncrementalC. FullD. Heuristic



QUESTION 67Can database resource manager define the degree of parallelism for a custom group?

A. NOB. Yes, since Oracle database 9iC. Yes, since Oracle database 10gD. Yes, since Oracle database 11g



QUESTION 68For which task would you not use Oracle Data Mining?

A. predicting custom behaviorB. associating factors with a business issueC. determining associations within a populationD. reducing the amount of data used in a data warehouse



QUESTION 69Identify the benefit of using interval partitioning.

A. automatic creation of new partitions based on hash valuesB. automatic creation of new partitions based on the value of data being enteredC. improved performance compared to range partitionsD. automatic transfer of older partitions lower cost storage



QUESTION 70Which condition can cause a change in the contents of the SQL Result Set Cache?

A. SQL result sets age out of the Result Set Cache based on the KEEP parameterB. SQL result sets are invalidated in the Result Set Cache after DML is performed against any of the tables in

the SQL queriesC. SQL result sets are pinned in the Result Set Cache with the KEEP parameterD. None of these would cause a change



QUESTION 71Identify the dimension that appears most often is queries in a data warehouse

A. product dimensionB. time dimensionC. cost dimensionD. location dimension



QUESTION 72You can perform what-if analysis of potential changes with Oracle Warehouse Builder?

A. TRUEB. FALSE



QUESTION 73The Oracle Optimizer is aware of Oracle OLAP cubes.

A. TRUEB. FALSE



QUESTION 74You are looking to create a RAC cluster to deliver high performance for your client’s data warehouse. which statement is true about a configuration with a few large nodes versus a configuration with manysmaller nodes?

A. a few large nodes always perform better than many small nodesB. a few large nodes always perform worse than many small nodesC. it depends on the workload specifics and the effect of a node failureD. performance should be the same with either option



QUESTION 75Identify the true statement about a data warehouse

A. The data warehouse is typically refreshed as often as a transactional systemB. Data warehouse queries are simpler than OLTP queries

C. A data warehouse typically contains historical dataD. Queries against a data warehouse never need summarized information



QUESTION 76Identify the action that you CANNOT perform using Database Resource Manager.

A. Allocate individual CPUs to Consumer GroupsB. Define a Resource PlanC. Define Consumer GroupsD. Create rules to map sessions to Consumer Groups



QUESTION 77Which is NOT an advantage provided by partitioning?

A. Can add to the benefits of parallelism through parallel partition-wise joinsB. Provides added flexibility for maintenance operations. C. Can improve performance by reducing I/OD. Reduces storage requirements for tables.



QUESTION 78What data can you compress using Advanced Compression in Oracle Database 11g?

A. Only data being archivedB. Data that can be updated, inserted and/or deleted (DML) C. Read only dataD. Data warehousing data



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