Question 1

If an organization's data scientist team prefers to work with data that remains persistently in memory to tweak models iteratively for faster computation, which of the following environments would best support their workflow?

Options :

A : SAS Compute Server emphasizing on leveraging existing server infrastructure without the need for in-memory data persistence.

B : Cloud Analytics Server (CAS), as it offers in-memory data persistence, allowing multiple analytic operations without reloading data from disk.

C : Traditional relational database management systems that store and retrieve data using disk-based structures.

D : Hadoop Distributed File System (HDFS), since it provides distributed storage but not necessarily in-memory computation.

Answer: B

Question 2

Given a dataset named 'orders' with variables 'orderId', 'customerId', and 'orderValue', you are tasked with writing a DATA Step to accumulate the total order value per customer. Which of the following codes will correctly produce a dataset with a total for each customer?

Options :

A : data customerTotals;set orders;by customerId;retain totalValue;if first.customerId then totalValue=0;totalValue + orderValue;if last.customerId then output;run;

B : data customerTotals;set orders;by customerId;totalValue + orderValue;if last.customerId then output;run;

C : data customerTotals;set orders;by customerId;retain totalValue 0;if first.customerId then call missing(totalValue);totalValue + orderValue;if last.customerId then output;run;

D : data customerTotals;set orders;retain totalValue 0;totalValue = totalValue + orderValue;output;run;

Answer: A

Question 3

A data analyst needs to append two tables, `sales2019` and `sales2020`, which reside in the CAS environment. Both tables have the same structure and variables, but each contains records from the respective year. Which CAS action should the analyst use to perform this task efficiently?

Options :

A : table.save

B : table.concat

C : table.append

D : datastep.runcode

Answer: B

Question 4

A SAS programmer is designing a table that will store customer feedback text of variable lengths. The table needs to efficiently manage space since the lengths of the feedback vary widely. Which of the following column definitions would be the most appropriate for this scenario?

Options :

A : feedback CHAR(500)

B : feedback VARCHAR(500)

C : feedback TEXT

D : feedback STRING

Answer: B

Question 5

In a SAS Viya program, if a variable `x` has been declared as INT32 and is assigned a value based on user input, which of the following error checks is crucial before performing arithmetic operations to avoid runtime errors?

Options :

A : Checking whether the value is a multiple of 10.

B : Checking that the value does not exceed the boundaries of INT32 (-2,147,483,648 to 2,147,483,647).

C : Ensuring that the variable is not null.

D : Verifying that the variable is positive.

Answer: B

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