Answer:
Implicit type casting means the type casting done by the compiler during compilation of program whereas Explicit type casting means the programmer explicitly type casts the variables. This is the difference implicit and explicit type casting.
Explanation:
Type casting means the conversion of one data type into another data type. There are two types of type casting. They are Implicit type casting and Explicit type casting.
<u>Implicit type casting:</u> The type casting which is done by the compiler during the compilation of a program. This occurs when we assigning smaller data type to larger data type and also both the data type are compatible. Below example clears the above concepts.
Ex:

In the above example " i " is " int " data type whereas " l " is long data type but as we assigned the value of " i " to " l ". Here " int " and " long " are compatible data types and we assigned smaller data type ( int - i ) to larger data type ( long - l ) implicit type casting occurs.
<u>Explicit type casting:</u> The type casting which is done by the programmer explicitly to convert one data type into other data type. If we want to assign a value of larger data type to smaller data type explicit type casting is required. Below example clears the above concepts.
Ex: 

In the above example " d " is " double " data type whereas " l " is " long " data type. Here we are explicitly type casting to change larger data value ( double - d ) to smaller data value ( long - l ).
Answer:
DNA obj =new DNA;//obj object created dynamically.
DNA *dnaPtr=&obj.//dnaPtr to store the address of the object.
Explanation:
The above written statements are in C++.The DNA object is created dynamically and it is done in C++ by using new keyword which allocates the heap memory for the object.
Then a dnaPtr is created of type DNA so that it can store the address of the DNA objects.
Answer:
The answer is "Recovery Plan for Disasters".
Explanation:
In the given statement, some of the information is missing, which can be described as follows:
A) systems engineering plan
B) security compliance plan
C) risk assessment plan
D) Recovery Plan for Disasters
It is a set of guidelines for the execution of a recovery process, it provides the restoration and safety to the system for the organization in the event of a disaster. It defined as "a detailed summary of the appropriate acts to be carried out before, during and after a disaster", and incorrect choices were explained as follows:
- In option A, It is used to design and analyze complex systems.
- In option B, It provides frameworks for the corporate evaluation process.
- In option C, It is used to identify the problems.
Answer: 7 math 8 many
Explanation: it makes sense