| S NO |
Assessment statement |
Grade |
Teacher’s notes |
| 1 |
Define the term encapsulation. |
|
Data and actions are limited to the object in which they are defined. |
| 2 |
Define the term inheritance. |
|
A parent object holds common data and actions for a group of related child objects. Multiple inheritance is not required. |
| 3 |
Define the term polymorphism. |
|
Actions have the same name but different parameter lists and processes. |
| 4 |
Explain the advantages of encapsulation. |
|
For example, the scope of data should be confined to the object in which it is defined as far as possible in order to limit side effects and dependencies. |
| 5 |
Explain the advantages of inheritance. |
|
For example, a parent object holds common data and actions, which enhances reuse and reduces maintenance overheads. |
| 6 |
Explain the advantages of polymorphism. |
|
For example, an action in a child object may choose to override actions of a parent object. This allows an external program to use the same action on a family of objects without knowing the implementation detail. |
| 7 |
Describe the advantages of libraries of objects. |
|
For example, sorts and other complex algorithms and processes do not have to be “re-invented”. |
| 8 |
Describe the disadvantages of OOP. |
|
For example, increased complexity for small problems; unsuited to particular classes of problem. AIM 9 Develop an appreciation of the limitations of OOP. |
| 9 |
Discuss the use of programming teams. |
|
As compared to individuals working alone. Examples include speed to completion, information hiding to reduce module dependencies, expertise in narrow fields (eg testing, documentation), etc. INT, AIM 5 The need to develop a common “language” to enable collaboration across international frontiers when resolving problems. |
| 10 |
Explain the advantages of modularity in program development. |
|
Advantages include easier debugging and testing, speedier completion, etc.
|
Print