IT 261 - Exam 2 Questions Answered Correctly Solved 100%
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IT 261 - Exm 2
Institution
IT 261 - Exm 2
IT 261 - Exam 2 Questions Answered Correctly Solved 100%
True - Answers (T/F) A return value in an interaction diagram is often a named object.
True - Answers (T/F) Classes that participate in a classification hierarchy can be represented within a relational database as a set of tables with the p...
IT 261 - Exam 2 Questions Answered Correctly Solved 100%
True - Answers (T/F) A return value in an interaction diagram is often a named object.
True - Answers (T/F) Classes that participate in a classification hierarchy can be represented within a
relational database as a set of tables with the primary key of the general class table replicated in the
other tables.
True - Answers (T/F) Referential integrity is a consistent relational database state in which every foreign
key value also exists as a primary key value.
True - Answers (T/F) Both a communication diagram and a sequence diagram have the same purpose
and provide basically the same information.
False - Answers (T/F) Messages are comprised of five elements, all of which are optional except the
method name.
True - Answers (T/F) The perfect technology assumption means not to worry about issues such as user
security.
True - Answers (T/F) The objective of design activities is to describe in detail the components of the final
solution system that will serve as a blue print for construction.
True - Answers (T/F) The primary difference between a design class symbol and a problem domain class
symbol is the addition of method signatures.
False - Answers (T/F) A phased database development and deployment (using iterative development) is
usually the safest approach to deploying the best database solution.
True - Answers (T/F) Invented keys that are not automatically generated in a relational database are
dangerous and require careful scrutiny.
False - Answers (T/F) An interaction diagram is a subclass of a sequence diagram.
False - Answers (T/F) The activation lifeline is depicted by a vertical dashed line under an object.
False - Answers (T/F) It is just as important to have heavy user involvement during analysis as it is during
design.
False - Answers (T/F) The controller object is usually part of view layer.
False - Answers (T/F) Design using CRC cards does not require the use of a design class diagram.
True - Answers (T/F) The objective of object-oriented design is to identify and specify all the classes and
messages that work together to carry out each use case.
False - Answers (T/F) The true/false condition on a message indicates whether the method on the
destination object will execute.
, True - Answers (T/F) In an iterative approach to software development, it is usually best to develop the
database in the first few iterations.
False - Answers (T/F) Cowboy coding is one of the newer techniques programming, often used with Agile
techniques.
False - Answers (T/F) The primary purpose of integrity controls is to track external activity.
True - Answers (T/F) Links on communication diagram simple show the flow of messages and are not the
associations between classes.
False - Answers (T/F) High coupling is usually better than low coupling because it makes the system
more integrated.
True - Answers (T/F) The adapter pattern facilitates changing the API method names in a system.
True - Answers (T/F) The best technique for accessing the database when multiple objects are needed is
just to let the data access object instantiate objects.
True - Answers (T/F) Every database in a DBMS consists of two separate data stores.
True - Answers (T/F) Detailed Object-oriented design (OOD) is done on a use case-by-use case basis.
False - Answers (T/F) The objective of object-oriented analysis is to identify the objects that must work
together to carry out each use case.
False - Answers (T/F) A write lock on a database allows other users to read the data, but they cannot
update any data.
False - Answers (T/F) The initial version of a communication diagram contains view layer and business
layer.
False - Answers (T/F) Symmetric key encryption uses a public key and a private key.
True - Answers (T/F) The key question to answer with the design of the user interface activity is, "How
will the users interact with the system?"
False - Answers (T/F) A relational database table is in third normal form (3NF) if it is in second normal
form (2NF) and if every non-key field is functionally dependent on the primary key.
True - Answers (T/F) In object-oriented design, the design models are extensions of the analysis models.
False - Answers (T/F) Cohesion is a measure of how well the system "hangs together" by having strong
connections between classes.
True - Answers (T/F) The perfect solution assumption means that we do not worry about exception
conditions.
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