OMG (Object Management Group) -OCRES - Advanced - UM0-411 Set 3

1.

Which statement is true about Priority Bands?

Priority Bands can overlap. A Priority Band may represent a single priority value. Priority Bands must collectively cover the entire CORBA priority range available. The complete set of priorities covered by the bands has to form a contiguous range.

2.

Which distributed system scheduling case is specifically addressed by RT-CORBA / Dynamic Scheduling?

Scheduling occurs completely independently on each node; application behaviors involving more than one node do NOT have a trans-node end-to-end timeliness
requirement. Scheduling occurs independently on each node, application behavior involving more than one node propagates its end-to-end timeliness context for use by eachnodes scheduler. Scheduling on each node is global with a logically singular system-wide scheduling algorithm instantiated on all nodes, and node instances interacting to create aglobally optimum schedule for all nodes. Multi-level scheduling seeks to improve global optimality by adaptively adjusting combinations of scheduling parameter elements, scheduling contexts,algorithms, and disciplines; schedulable entity; and node load balancing.

3.

Which exception is raised when an ORB receives an RTCORBAPriorityRange service context containing a different priority band definition after a priority is already associated with the connection?

TRANSIENT BAD_INV_ORDER BAD_OPERATION NO_RESOURCES

4.

Which exception is thrown when an attempt is made to set the priority to a value outside the accepted range?

INITIALIZE BAD_PARAM BAD_INV_ORDER NO_RESOURCES

5.

What is one characteristic of an orderly GIOP connection shutdown in GIOP V 1.2?

The server sends a CloseConnection message to the client after all requests are processed. The server ORB closes the connection with its client ORB after all pending requests are processed. The server ORB sends a CloseConnection message to its client ORB after all pending requests are processed. The server sends a CloseConnection message to its client after all pending non-oneway requests are processed.

6.

Which statement is true about the Real Time CORBA Mutex Interface?

The create_mutex operation creates the object in the locked state. If the mutex is locked, subsequent lock() calls will return with no action. The mutex returned by create_mutex must have the same priority inheritance properties as those used by the ORB to protect resources. If the try_lock() operation does get the lock within the max_wait time period, it returns TRUE at which time the user must call the lock() operation.

7.

Which statement correctly describes the Lightweight Logging Service types and data structures?

The AdministrativeState can be set to locked or unlocked. LogTime has two fields of type long for microseconds and nanoseconds. The InvalidParam exception indicates that all provided parameters were invalid. When the OperationalState is DISABLED, the log is still available for use by log producers.

8.

Which statement is true about the LogLevel field?

LogLevel values of 15 to 31 are reserved for debugging support. Type LogLevel is an integer type that is utilized to sort logging records. The value provided in LogLevel is recorded in the logging record and provided to the consumer at retrieval. A LogLevel value of SECURITY_ALARM or FAILURE_ALARM results in an immediate exception event when the logging record is stored.

9.

Which statement is true about the RTCORBA::RTORB Interface?

The RTCORBA::RTORB Interface is derived from CORBA::ORB. There can be multiple instances of RTCORBA::RTORB per instance of CORBA::ORB. The object reference for the RTORB is obtained by calling ORB::resolve_initial_references with the ObjectId RTORB. The RTCORBA::RTORB Interface is expressed in pseudo IDL, for which inheritance is defined.

OMG (Object Management Group) -OCRES - Advanced - UM0-411 Set 3

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OMG (Object Management Group) -OCRES - Advanced - UM0-411 Set 3

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