If you mean sonar it uses echolocation but GPS is signaled from satellite to the internal antenna
Answer:
The correct answer to the following question will be 2. the operator new.
Explanation:
New operator is used to allocating the memory to the instance object.The new object can be created by using a "new" keyword in java .
Syntax of using 'new' operator is :
class_name object_name=new class_name() // it allocated the memory to the class
For Example :
ABC obj = new ABC;
Now, this time obj points to the object of the ABC class.
obj = new ABC ();
call the construction of ABC class
The answer to this question is a firewall. A Firewall is a network
security system that blocks and prevent unauthorized use or access of company’s
network. Firewall is also a program that screens and restricts viruses and other
users like hackers to reach the network through the internet.
