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SASInstitute A00-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DATA Step and SQL Programming in CAS | 13% | - Converting PROC SQL to PROC FEDSQL - Execution location and threading rules - Updating DATA step for CAS compatibility |
| Topic 2: Analyze and Summarize Data with CAS Actions | 7% | - Generating visualizations and reports via ODS - Summary statistics and frequency tables |
| Topic 3: CAS Language Basics | 18% | - Using SOURCE blocks for code substitution - CASL syntax, variables, arrays and dictionaries - Capturing and processing CAS action results |
| Topic 4: Explore and Validate Data with CAS Actions | 8% | - Identifying duplicates and invalid values - Inspecting table metadata and content |
| Topic 5: Programming in SAS Viya Concepts | 8% | - Determining when to use CAS for tasks - SAS Viya architecture: Compute Server vs CAS - Serial vs parallel and in-memory processing |
| Topic 6: CAS-Enabled Procedures and User Defined Formats | 8% | - Using PROC MEANS, SUMMARY, FREQTAB, MDSUMMARY - User-defined formats in CAS - Procedures running on CAS vs Compute Server |
| Topic 7: Prepare Data with CAS Actions | 22% | - Update, copy and alter in-memory tables - Data type conversion and missing value imputation - Using dataStep and fedSQL action sets |
| Topic 8: Access Data with CAS Actions | 8% | - Loading, uploading and promoting tables - Managing caslibs and data sources |
| Topic 9: Managing Data with CAS Enabled Procedures | 13% | - CAS column data types and conversion - Working with CAS libraries and sessions - Loading, promoting, saving and dropping in-memory tables |
SASInstitute SAS Viya Intermediate Programming Sample Questions:
1. When submitted, this program runs normally on the Compute Server and produces a cross-tab report:
proc freq data=casuser.cars;
by descending origin;
table type*make / nocol norow nopercent;
run;
What happens when this program is submitted instead?
proc freqtab data=casuser.cars;
by descending origin;
table type*make / nocol norow nopercent;
run;
A) The program runs normally on the Compute Server and produces a cross-tab report.
B) The program produces an error indicating the DESCENDING option is not supported in the BY statement.
C) The program produces an error indicating the NOPERCENT option is not supported in the TABLE statement.
D) The program runs normally on the CAS server and produces a cross-tab report.
2. Which CAS action is used to convert a character variable to a numeric variable in a CAS table?
A) cas.cast
B) cas.transform
C) cas.change
D) cas.convert
3. Which CASL program will create the sample2 table in the casuser caslib?
A) proc cas;
datastep.runCode result=r/
code="
data casuser.sample1;
set casuser.class;
y=1;
run;
data casuser.sample2;
set casuser.class;
y=2;
run;
";
quit;
B) proc cas;
datastep.runCode result=r/
code="
data casuser.sample2;
set casuser.class(firstobs=3);
run;
";
quit;
C) proc cas;
datastep.runCode result=r/
code="
data casuser.sample2;
set casuser.class;
y=ranuni(123)*100;
run;
";
run;
D) proc cas;
datastep.runCode result=r/
code="
data casuser.sample2;
set casuser.class;
by age;
if first.age then y=age;
run;
";
quit;
4. Which CAS action is used to perform data quality checks on variables in a CAS table?
A) cas.quality
B) cas.verify
C) cas.validate
D) cas.check
5. Assume all caslib names follow libref naming conventions.
Which code assigns librefs of the same name to each caslib?
A) caslib libref assign;
B) caslib _all_ assign;
C) caslib assign _all_;
D) caslib assign libref;
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: B |
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