1Z1-182 EXAM SYLLABUS | EXAM 1Z1-182 PDF

1Z1-182 Exam Syllabus | Exam 1Z1-182 PDF

1Z1-182 Exam Syllabus | Exam 1Z1-182 PDF

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Oracle Database 23ai Administration Associate Sample Questions (Q84-Q89):

NEW QUESTION # 84
Which two statements are true about User Authentication in an Oracle Database?

  • A. REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
  • B. Operating System authentication may be used for system-privileged administrative users.
  • C. Password File authentication is supported for any type of database user.
  • D. Password File authentication must be used for system-privileged administrative users.
  • E. Password authentication must be used for system-privileged administrative users.

Answer: B,D

Explanation:
User authentication in Oracle 23ai determines how users (especially administrative ones) connect to the database. Let's analyze each option with extensive detail:
A . Operating System authentication may be used for system-privileged administrative users.
True. OS authentication allows users mapped to OS accounts (e.g., ops$oracle) to connect without a password, often used for administrative users like SYS or SYSTEM. This is configured by creating an externally authenticated user (e.g., CREATE USER "OPS$ORACLE" IDENTIFIED EXTERNALLY) and relies on the OS to verify identity.
Mechanics:When a user logs in via sqlplus / as sysdba, Oracle checks the OS user against the dba group (Unix) or ORA_DBA (Windows). If matched, no password is needed, leveraging OS security.
Practical Use:Common for DBAs managing local instances, reducing password management overhead.
Edge Case:Requires REMOTE_LOGIN_PASSWORDFILE=NONE for exclusive OS auth, but this isn't mandatory if a password file exists alongside.
Historical Note:Introduced in early Oracle versions, this remains a robust option in 23ai for local admin access.
B . Password authentication must be used for system-privileged administrative users.
False. "Must" is incorrect; password authentication (e.g., sqlplus sys/password) is an option, not a requirement. OS authentication or password file authentication can also be used for users like SYS. This option overstates the necessity of password-based login.
Why Incorrect:Oracle's flexibility allows multiple methods, contradicting the absolute phrasing here.
C . Password File authentication is supported for any type of database user.
False. Password file authentication is restricted to users with SYSDBA, SYSOPER, or similar system privileges (e.g., SYSBACKUP). Regular users (e.g., HR) can't use the password file (orapw<sid>); they rely on database authentication (passwords stored in the DB) or external methods.
Mechanics:The password file stores hashed credentials for privileged users, checked during remote AS SYSDBA logins.
Why Incorrect:Extending this to "any user" ignores Oracle's security model limiting password file usage.
D . REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
False. REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE allows a dedicated password file for one instance, enabling password changes via ALTER USER SYS IDENTIFIED BY newpass. However, SHARED mode also permits changes for SYS, though not for other users added to the file. The "must" overstates the requirement; it's sufficient, not necessary.
Mechanics:EXCLUSIVE locks the file to one DB, while SHARED allows multiple DBs to use it, with restrictions on non-SYS users.
E . Password File authentication must be used for system-privileged administrative users.
True. For remote administrative access (e.g., sqlplus sys/password@orcl as sysdba), a password file is mandatory when REMOTE_LOGIN_PASSWORDFILE is EXCLUSIVE or SHARED. Local OS authentication is an alternative, but for network-based admin tasks, the password file is required, making this statement true in that context.
Mechanics:Set via orapwd (e.g., orapwd file=orapworcl password=oracle entries=10), enabling remote SYSDBA logins.
Edge Case:If REMOTE_LOGIN_PASSWORDFILE=NONE, only OS auth works locally, but this isn't the default or typical setup.


NEW QUESTION # 85
How do you validate that the database was migrated to Unified Auditing?

  • A. By querying V$OPTION for parameter Unified Auditing.
  • B. By executing DBMS_AUDIT_MGMT PL/SQL package in Verify mode.
  • C. By using the LSINVENTORY Command to query the Oracle Database Software Library.
  • D. By querying the DBA_UNIFIED_AUDIT_OPTION view.

Answer: A

Explanation:
Unified Auditing is enabled at database creation or migration in 23ai. Let's analyze:
A . By querying V$OPTION for parameter Unified Auditing.
True. SELECT VALUE FROM V$OPTION WHERE PARAMETER = 'Unified Auditing'; returns TRUE if enabled. It's the definitive way to confirm Unified Auditing is active at the database level.
Mechanics:V$OPTION reflects compiled-in features; TRUE indicates the binary was linked with Unified Auditing (uniauflt=on during relink).
Practical Use:Quick, reliable check post-migration or upgrade.
B . By using the LSINVENTORY Command to query the Oracle Database Software Library.
False. LSINVENTORY (from OPatch) lists installed software components, not runtime features like auditing mode.
C . By querying the DBA_UNIFIED_AUDIT_OPTION view.
False. This view doesn't exist; DBA_AUDIT_POLICIES or UNIFIED_AUDIT_TRAIL show policies and records but not migration status.
D . By executing DBMS_AUDIT_MGMT PL/SQL package in Verify mode.
False. No "Verify mode" exists in DBMS_AUDIT_MGMT; it manages audit trails, not migration validation.


NEW QUESTION # 86
Which three actions are ways to apply the principle of least privilege?

  • A. Revoking execute privilege on UTL_SMTP, UTL_TCP, UTL_HTTP, and UTL_FILE from the roles/users (assuming typo for duplicate option).
  • B. Setting the REMOTE_OS_AUTHENT parameter to TRUE.
  • C. Enabling Unified Auditing.
  • D. Setting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUE.
  • E. Using Access Control Lists (ACLs).

Answer: A,C,E

Explanation:
A .True. Auditing tracks privilege use, enforcing least privilege.
B .True. Revoking unnecessary PL/SQL access limits capabilities.
C .True. ACLs restrict network access precisely.
D .False. TRUE relaxes dictionary access, violating least privilege.
E .False. TRUE allows risky OS auth, weakening security.


NEW QUESTION # 87
One of your database instances was shut down normally and then started in NOMOUNT state. You then executed this command: ALTER DATABASE MOUNT; Which two of these actions are performed?

  • A. Online redo logs are opened.
  • B. The alert log has instance startup details written to it.
  • C. Oracle shared memory structures are allocated.
  • D. The initialization parameter file is read.
  • E. Control files are read.
  • F. Online data files are opened.

Answer: B,E

Explanation:
A .False. Data files open in OPEN.
B .False. Redo logs open in OPEN.
C .False. PFILE/SPFILE is read at NOMOUNT.
D .False. SGA is allocated at NOMOUNT.
E .True. Alert log records mount event.
F .True. Control files are read in MOUNT.


NEW QUESTION # 88
Which two statements are true about undo segments and the use of undo by transactions in an Oracle database instance?

  • A. Undo segments can be stored in the SYSTEM tablespace.
  • B. Undo segments can extend when a transaction fills the last extent of the undo segment.
  • C. Undo segments can be stored in the SYSAUX tablespace.
  • D. A single transaction may use multiple undo segments simultaneously.
  • E. Undo segments can wrap around to the first extent when a transaction fills the last extent of the undo segment.

Answer: B,D

Explanation:
A .False. Undo is stored in a dedicated undo tablespace, not SYSTEM.
B .True. Large transactions can span multiple undo segments.
C .False. Undo isn't stored in SYSAUX.
D .True. Undo segments extend as needed, space permitting.
E .False. Undo doesn't "wrap"; new extents are allocated.


NEW QUESTION # 89
......

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