Answer:
B.add.
Explanation:
boolean add(element)
The add method in java inserts an element in the vector.It's return type is Boolean it returns true if the element is successfully inserted in the vector and false if the operation is unsuccessful.There is no Push operation in vector.Hence we conclude that the answer is add.
Answer:v True
Explanation: Open source operating system is the system that has source code that can be modified and enhance them . It can also be shared between the public as it is available in the open form . There are many examples of the open source operating system like Linux, Ubuntu etc. which has both executable code and source code as well. so therefore the given statement is true.
Answer:
Only the last number of each IP address will be unique
Explanation:
Subnet Mask is used to identify the two parts of the IP address. One is the network part that should be same for one network, and other is host part that will vary with number of computer or devices that are connected to the network.
Subnet mask is 32 bit address that are divided in 4 equal parts of 8 bits. Each 8 bit converted to decimal by varying different bits to generate 256 different decimal number combinations. It means we can vary the address range between 0 to 255. So If any 8 bit portion is 255 that means, in this section we cannot add host address.
<u>For Example</u>
In given case,
Subnet Mask = 255.255.255.0
That means first three portions are fixed and has been allocated for network part.
The forth portion is 0 that means we can change this portion in IP address up to 255 different addresses.
So the IP address that is given can be vary as:
10.1.10. 186
10.1.10 This portion is network portion, this cannot be vary.
only the number 186 is the unique address that is particularly assigned to the devices and is vary between 0 to 255.
A unit of information equal to one billion {109} or, strictly 230 bytes
