SAS Viya Programming Specialist (A00-420) Certification Exam Sample Questions

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SAS A00-420 Sample Questions:

01. When a CAS table is newly loaded or created within a CAS session, what is its scope by default?
a) Permanent and unaffected by whether the creating session ends
b) Global, and immediately visible to every other session with caslib access
c) Session-scoped, visible only within the session that created it until an explicit action changes that
d) Determined entirely by the caslib's access-control list rather than by the session that created the table.
 
02. An analyst at a manufacturing plant loads a sensor-readings table into CAS during their SAS Studio session, runs a few exploratory queries, and then closes SAS Studio without saving or promoting anything.
What happens to the loaded CAS table as a result?
a) The table is written into the CAS server's format library so future sessions can reference it as a lookup table.
b) The table is written out to a permanent SAS 9 data set on disk as part of the session's normal teardown, so no cleanup step is required.
c) The table remains in CAS memory indefinitely and is fully visible to every other user's session, because loading data into CAS is inherently a global operation.
d) The table disappears along with the rest of that session's state once the session ends, since it was never promoted or saved outside the session.
 
03. Which two of the following are capabilities PROC CASUTIL provides for CAS table lifecycle management?
(Choose two.)
a) Compiling a CASL script into a standalone executable outside of CAS
b) Establishing the CAS server's initial network security certificate
c) Writing user-defined format definitions as part of table load, without a separate PROC FORMAT step.
d) Loading source data into a CAS table
e) Saving a CAS table back to its caslib's data source
 
04. What does saving a CAS table in SAS Viya do?
a) It persists the CAS table's data back to the caslib's underlying data source
b) It removes the table from CAS memory immediately after the save completes
c) It renames the table so other sessions can no longer reference the original name
d) It converts the table into a CASL action set for reuse
 
05. An energy utility's programmer submits the same summarization logic twice: once against a SAS 9 data set on the SAS Compute Server, and once against an equivalent CAS table.
Why can the CAS version typically complete the summarization faster on a large data set?
a) The CAS version only processes a random ten percent sample of the table by default, borrowing the sampling logic from PROC SURVEYSELECT rather than reading the full table SAS 9 would.
b) The CAS version skips reading the actual data values and instead estimates the summary from the table's row count alone.
c) The CAS version defers all computation to the client desktop's local CPU instead of the server.
d) The CAS version can split the work across multiple threads and worker nodes on the CAS server, while the SAS 9 version runs single-threaded on one compute process.
 
06. In SAS Viya, what does loading data into CAS accomplish?
a) It converts the data into a user-defined format as part of the load.
b) It brings source data into CAS as a CAS table so it can be processed in-memory by CAS-enabled programs
c) It permanently deletes the original source file once the CAS table exists
d) It promotes the resulting table to global scope as part of the same load step, without a separate table.promote action.
 
07. A logistics company's new SAS Viya user opens SAS Studio and starts a programming session against Viya for the first time.
What best describes the CAS session that gets created for that user?
a) A CAS session is a batch job scheduler that queues DATA step programs for later execution on the SAS Compute Server.
b) A CAS session is a permanent, shared workspace that all Viya users read and write into simultaneously by default.
c) A CAS session is an isolated workspace on the CAS server in which that user's tables, actions, and results exist for the life of the session.
d) A CAS session is a saved copy of a caslib's access-control settings that persists even when no user is connected, functioning as a static configuration record rather than an active per-user workspace.
 
08. Before writing further analysis code, a manufacturing analyst wants to check a CAS table's row count and column list without reloading or modifying the data.
What can accomplish this?
a) Retrieving CAS table information such as row count and column details through PROC CASUTIL
b) Dropping the table and observing the resulting error message for row and column counts
c) Rewriting the original DATA step and manually counting the output log lines
d) Promoting the table to global scope, since promotion is the only way to view table attributes
 
09. Which two statements correctly describe the relationship between session-scoped and global-scoped CAS tables?
(Choose two.)
a) Promoting a table to global scope allows other sessions with appropriate access to reference it without reloading the source data
b) A session-scoped table remains visible to every other session from the moment it is loaded, without any promotion step.
c) A CAS table is session-scoped by default when it is first loaded or created
d) Global scope and session scope are unrelated to which sessions can see a given table
e) Once a table is promoted to global scope, PROC CASUTIL's DROPTABLE action is not able to remove it.
 
10. A telecom's usage-analytics team needs to analyze a multi-terabyte call-detail-record file sitting on a network file system, without first copying the entire file into CAS memory as a separate load step.
Which caslib type is designed for this?
a) A personal caslib, because only the requesting analyst will use the results.
b) A DNFS caslib, since it is a path-based variant tuned for reading large data directly from a network file system
c) A global caslib, because the file is large, and larger files always require a caslib with broader, cross-session access to load successfully
d) Any path-based caslib gives identical performance to a DNFS caslib for this purpose

Answers:

Question: 1 Answer: c Question: 2 Answer: d
Question: 3 Answer: d, e Question: 4 Answer: a
Question: 5 Answer: d Question: 6 Answer: b
Question: 7 Answer: c Question: 8 Answer: a
Question: 9 Answer: a, c Question: 10 Answer: b

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