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Title: [Q118-Q133] DEA-7TT2 Practice Test Give You First Time Success with 100% Money Back Guarantee!

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 DEA-7TT2 Practice Test Give You First Time Success with 100% Money Back Guarantee!
All Obstacles During DEA-7TT2 Exam Preparation with DEA-7TT2 Real Test Questions


NEW QUESTION 118When creating a presentation for a technical audience, what is the main objective?Response:
 Show that you met the project goals
 Show how you met the project goals
 Show if the model will meet the SLA
 Show the technique to be used in the production environment
NEW QUESTION 119Based on the graphic, what should be done to begin addressing chart junk?Response:
 Remove the vertical gridlines
 Remove the legend
 Reduce the font size in the axis
NEW QUESTION 120What are challenges presented by Big Data?Response:
 New technologies, tools and regulatory rules only
 New technologies, tools, business processes, and regulatory rules
 New technologies, and tools only
 New technologies, tools, and business processes only
NEW QUESTION 121Which term is used to describe separating a database into separate parts that can be processed in parallel?Response:
 Deduplication
 Replication
 Sharding
 Reconstituting
NEW QUESTION 122Refer to the exhibit.You are building a decision tree. In this exhibit, four variables are listed with their respective values of info-gain. Based on this information, on which attribute would you expect the next split to be in the decision tree?Response:
 Credit Score
 Age
 Income
 Gender
NEW QUESTION 123Which word or phrase completes the statement? Business Intelligence is to monitoring trends as Data Science is to ________ trends.Response:
 Predicting
 Discarding
 Driving
 Optimizing
NEW QUESTION 124What does a leaf node represent in a decision tree?Response:
 Root of the decision tree
 Decision point on a variable
 Outcome of a test on a variable
 Assigned class label
NEW QUESTION 125Consider a database with 4 transactions:Transaction 1: {cheese, bread, milk}Transaction 2: {soda, bread, milk}Transaction 3: {cheese, bread}Transaction 4: {cheese, soda, juice}You decide to run the association rules algorithm where minimum support is 50%. Which rule has a confidence at least 50%?Response:
 {cheese} => {bread}
 {juice} => {cheese}
 {milk} => {soda}
 {soda} => {milk}
NEW QUESTION 126You have numeric data for more than 500 observations. You are interested in identifying linear relationships among these numeric variables. Which R function should you employ to get the best visualization?Response:
 rug()
 lm()
 pairs()
 plot(density())
NEW QUESTION 127How is HDFS defined?Response:
 Large “web table” capable of holding millions of rows and millions of columns
 Row-column oriented datastore supporting redundancy and high availability
 Reliable, redundant distributed file system
 Reliable file system stored on a single extensible storage platform
NEW QUESTION 128Which word or phrase completes the statement? A spreadsheet is to a data island as a centralized database for reporting is to a __________?Response:
 Data Warehouse
 Data Repository
 Analytic Sandbox
 Data Mart
NEW QUESTION 129What is the primary function of the NameNode in Hadoop?Response:
 Keeps track of which MapReduce jobs have been assigned to each TaskTracker
 Monitors the state of each JobTracker node and signals an event if unavailable
 Runs some number of mapping tasks against its assigned data
 Acts as a regulator/resolver among clients and DataNodes
NEW QUESTION 130When would you use a Wilcoxson Rank Sum test?Response:
 When you cannot make an assumption about the distribution of the populations
 When the data can easily be sorted
 When the populations represent the sums of other values
 When the data cannot easily be sorted
NEW QUESTION 131What is a core deliverable at the end of the analytic project?Response:
 An implemented database design
 A whitepaper describing the project and the implementation
 A presentation for project sponsors
 The training materials
NEW QUESTION 132Consider these itemsets:(hat, scarf, coat)(hat, scarf, coat, gloves)(hat, scarf, gloves)(hat, gloves)(scarf, coat, gloves)What is the confidence of the rule (hat, scarf) => gloves?Response:
 66%
 40%
 50%
 60%
NEW QUESTION 133What are considerations in a data science and Big Data analytics project?Response:
 Ignoring executive stakeholders and business users
 Applying the latest technologies to demonstrate technical skills
 Analysis flexibility and decision making
 Building data silos and bypassing data privacy rules
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