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 space available will vary between 800 GB (100%) and 400 GB (50%) of the total disks, depending on the RAID level.
The OS will handle the RAID as a single disk.
Explanation:
Each RAID level implements parity and redundancy in a different way, so the amount of disks used for this extra information will reduce the space available for actual storage.
Usual RAID levels are:
<u>RAID 0:</u> does not implement any redundancy or parity, so you will have available 100% of the total storage: 8 x 100 GB = 800 GB
<u>RAID 1:</u> Duplicates all the information in one disk to a second disk. Space is reduced in half: 400 GB
<u>RAID 5:</u> Uses the equivalent of 1 disk of parity data distributed evenly on each disk, meaning the space available is 
of the total disks: 
of 800 GB = 700 GB
Writting and reading the information on a RAID storage is handled by a raid controller, either implemented in hardware or software. The OS will "see" a single disk and will read or write information as usual.
Answer:
This statement is correct.
Explanation:
If a function does not have any parameters, then we can create the variable inside the function which will be private and call the function from the main function.
If we specify any return type like int, float or char, etc then we need to declare a return value from the function.
But If we specify the Void then we don't need to return value inside the function, we can directly print the value inside function.
Ex.
void add()
{
int a=7;
int b=9;
int c=a+b;
System.out.println("the added value is :"+c);
}
The answer is : to more easily access and save information and to reduce waste. It is more convenient to receive and store our information in a digital format. when we reduce paper waste by using technology more.
