Module 1- Block Diagram part 1

Question 1

Purpose of a BDD

Answer 1

to express information about a systems structure

Question 2

the Part property (element of usage )is typed by

Answer 2

Block ( element of definition )

Question 3

the Reference property ( element of usage) is typed by

Answer 3

A block or an actor ( element of definition)

Question 4

A Value property (element of usage) is typed by

Answer 4

Value type ( element of definition)

Question 5

Constraint Property ( element of usage) is typed by

Answer 5

Constraint Block ( element of definition )

Question 6

Constraint Parameter (element of usage) is typed by

Answer 6

A block or a value type ( element of definition )

Question 7

Nonatomic Flow port ( element of usage) is typed by

Answer 7

Flow specification ( element of definition )

Question 8

Standard Port ( element of usage) is typed by

Answer 8

Interface ( element of definition )

Question 9

Connector ( element of usage ) is typed by

Answer 9

Association ( element of definition )

Question 10

Call behavior action ( element of usage ) is typed by

Answer 10

Activity , interaction or state machine ( element of definition )

Question 11

Object node ( element of usage ) is typed by

1. Block
   2.
   3.

Answer 11

Block , value type or signal ( element of definition )

Question 12

Lifeline is typed by
– block
–

Answer 12

actor

Question 13

Structural features of a block
1. part property
2. reference property
3 value property
4 constraint property
5. port
6.

Answer 13

flow property

Question 14

two Behavioral features of a block are

Answer 14

receptions and operations

Question 15

a part represents

Answer 15

internal instance of a block

Question 16

a reference property represents

Answer 16

external instance of a block

Question 17

constraint property represents usage of a constraint that all instances of a _____ represent

Answer 17

Block

Question 18

port represents

Answer 18

an interface or connection with that block and other elements

Question 19

What is a derived property value ?
the slash in front a term
for example /mass

Answer 19

a value is calculated somewhere in the model

Question 20

Constraint block defines what kind of expression ?

Answer 20

A constraint expression

Question 21

what is a constraint expression used to express in sysml ?

Answer 21

A math equation with parameters ( constraint parameters)

Question 22

Constraint property is typed by

Answer 22

A constraint block

Question 23

Flow Ports represent ?

Answer 23

Represent a connection point which objects flow

Question 24

Atomic Flow ports are used when ?

Answer 24

a single type of object flows

Question 25

Non-atomic ports are used when ?

Answer 25

a connection on a boundary where multiple objects flow

Question 26

Atomic Flow ports ( element of usage ) is typed by

Answer 26

Block , value type or signal ( element of definition )

Question 27

purpose of a flow specification

Answer 27

contract / list of the items that flow in the boundary of the non atomic port ( in , out , inout)

Question 28

What is a conjugated port ~

Answer 28

~ allows the direction of the flow properties to be reversed

Question 29

what is a standard port typed by

Answer 29

interface , represents a connection point on the boundary is either provided or required .. think socket and ball

Question 30

standard port - ( socket ) means

Answer 30

the owning block "requires" and "invokes" the behavior

Question 31

standard port - ( ball notation) means

Answer 31

the owning block "implements" or "performs"the behavior

Question 32

Three kinds of sysml behavioral diagrams

Answer 32

activity , interaction , state machine

Question 33

client does not wait and is asynchronous is this an operation or reception ?

Answer 33

reception

Question 34

operations represent behaviors that can be invoked in what way ? Synch or asyncs clue sync = waits async = doesnt wait

Answer 34

Synchronously

Question 35

synchronous means that the client waits is this in a **operation** or reception ?

Answer 35

operation

Question 36

client does not wait therefore it is

Answer 36

asynchronous

Question 37

a reception is triggered by

Answer 37

signal event

Question 38

an operation is triggered by ______ event

Answer 38

call event

Question 39

Time event refers to

Answer 39

a time or after time event

Question 40

Change event refers to a boolean condition when a (t/f ?) behavior occurs

Answer 40

True

Question 41

**signal event** refers to an arrival of a signal that is sent from a client to a ____

Answer 41

target

Question 42

call event refers to an ____________ or behavior being called

Answer 42

operation

Question 43

an event occurs and behaviors are

Answer 43

executed

Question 44

an event occurs at

Answer 44

a discrete moment in time , has no duration

Question 45

a behavior occurs over

Answer 45

a period in time , has a duration