OMG UM0-200 問題集

質問 1：
What is true of outgoing transitions from a fork pseudostate?
A. are mutually exclusive
B. can only exist if the object is declared concurrent
C. are taken serially in arbitrary order
D. may have guards
E. must terminate in different regions of a state
正解：E

質問 2：
What statement is true if a port delegates to multiple ports on subordinate components?
A. multiple delegation is not allowed
B. at execution time, signals will be delivered from the subordinate ports to the delegating port
C. subordinate ports must collectively offer the delegated functionality of the delegating port
D. subordinate ports must be type compatible with the delegating port
正解：C

質問 3：
Triggers on two different transitions originating from two states at different levels of the same state are simultaneously enabled (as shown in the exhibit). What does this mean?

A. Both transitions are taken in arbitrary order.
B. The less deeply nested transition takes precedence over those with more depth.
C. More deeply nested transitions take precedence over those with less depth.
D. The state machine is not well-formed.
正解：C

質問 4：
Assume component A provides an interface P and requires an interface R.
In order for a component B to be substituted for component A, what must be true?
A. The interface that A requires must be type conformant with respect to the interface that B provides.
B. Components must be related to each other via a dependency.
C. The interface that B requires must be type conformant with respect to the interface that A requires, and the interface that B provides must be type conformant with respect to the interface that A provides.
D. The interface that B requires must be type conformant with respect to the interface that A provides.
正解：C

質問 5：
What is true of a required interface associated with a port?
A. identifies the services that the object owning the port can offer to other objects connected via that port
B. represents an interface that must be defined in the same package in which the classifier owning the port is defined
C. represents an interface that must be defined within the classifier that owns the port
D. identifies the services that the object owning the port expects of objects connected via that port
正解：D

質問 6：
CORRECT TEXT
In the exhibit, what represents an interaction occurrence?

C
正解：


質問 7：
What is true of a composite state with two regions?
A. is executed concurrently
B. is equivalent to two states with one region each
C. is a kind of submachine state
D. can have separate entry and exit actions for each region
E. is an orthogonal state
正解：E

質問 8：
What is the meaning of a required extension?
A. This extension has a higher priority than the other defined in the same profile.
B. An instance of the extending stereotype must never be linked to an instance of the extended metaclass.
C. An instance of the extending stereotype must always be linked to an instance of the extended metaclass.
D. The extension must be applied at least once in a model.
正解：C

質問 9：
What is true about a pseudostate?
A. a state that can be specialized for different purposes
B. a specification of a potential state
C. a state entry or exit point
D. not a state but a vertex
正解：D