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SASInstitute A00-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: CAS Language Basics | 18% | - Capturing and processing CAS action results - Using SOURCE blocks for code substitution - CASL syntax, variables, arrays and dictionaries |
| Topic 2: 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 3: Programming in SAS Viya Concepts | 8% | - SAS Viya architecture: Compute Server vs CAS - Serial vs parallel and in-memory processing - Determining when to use CAS for tasks |
| Topic 4: 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 5: DATA Step and SQL Programming in CAS | 13% | - Updating DATA step for CAS compatibility - Execution location and threading rules - Converting PROC SQL to PROC FEDSQL |
| Topic 6: Analyze and Summarize Data with CAS Actions | 7% | - Summary statistics and frequency tables - Generating visualizations and reports via ODS |
| Topic 7: Explore and Validate Data with CAS Actions | 8% | - Inspecting table metadata and content - Identifying duplicates and invalid values |
| 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% | - Working with CAS libraries and sessions - Loading, promoting, saving and dropping in-memory tables - CAS column data types and conversion |
SASInstitute SAS Viya Intermediate Programming Sample Questions:
1. Which DATA step function is used to concatenate character variables in CAS programming?
A) CATS
B) CONCAT
C) CAT
D) LENGTH
2. Which PROC CASUTIL statement successfully applies the regnm format to the Region column of the sales table in the public caslib?
A) altertable incaslib="public" casdata="sales" columns={{name="Region" format="regnm."}};
B) altertable caslib="public" table="sales" columns={name="Region" format="regnm."};
C) altertable caslib="public" casdata="sales" columns={name="Region" format="regnm."};
D) altertable incaslib="public" table="sales" columns={{name="Region" format="regnm."}};
3. Which CAS action is used to aggregate data at a higher level of granularity in a CAS table?
A) cas.aggregate
B) cas.groupby
C) cas.collapse
D) cas.summarize
4. 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;
y=ranuni(123)*100;
run;
";
run;
C) proc cas;
datastep.runCode result=r/
code="
data casuser.sample2;
set casuser.class(firstobs=3);
run;
";
quit;
D) proc cas;
datastep.runCode result=r/
code="
data casuser.sample2;
set casuser.class;
by age;
if first.age then y=age;
run;
";
quit;
5. Which CAS action is used to calculate summary statistics for variables in a CAS table?
A) cas.describe
B) cas.aggregate
C) cas.stats
D) cas.summary
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: D |




