Answer:
Option A. is correct
Explanation:
It now not possible for a country to be "occupied" by an invisible invader that arrives through airwaves and wireless networks. It is almost impossible to block foreign countries’ satellite broadcasts and Internet transmissions inspite of Spy satellites and other communications technology and Global positioning systems.
Option A. is correct
Answer:
<u>Advantages of wireless communication:-</u>
- Flexibility in transferring the message through communication for which the sender and receiver can be in any place.
- Speed of the communication is accurate and fast
- Due to no wiring , the cost of the wireless communication is less.
<u>Disadvantages of wireless communication:-</u>
- The security is less as the data can be accessed by unauthorized sources at times.
- The setting up of wireless communication complex and expensive.
<u>Advantages of wired communication:-</u>
- Simple configuration
- Higher bandwidth is present in the cable
- High reliability
<u>Disadvantages of wired communication:-</u>
- Mobility is present for communication
- Installation requires lot of time due to cabling
- Requires extra devices for covering large areas for communication
Wireless communication is more preferable than wired communication in the conditions like communication connection that should face low damage and longer life which is not present in cable connection as they break or get disrupted.The flexibility of moving while communication is required by most people so, they use wireless communication .
Answer:
Explanation:
1. The answer is No, interface cannot have constructors. ... In order to call any method we need an object since there is no need to have object of interface, there is no need of having constructor in interface (Constructor is being called during creation of object).
2.A final class is considered complete and can not be subclassed (It's methods can not be overridden ). In case of abstract class, we have to proved implementation to abstract methods in subclasses. A final class can not have abstract methods and an abstract class can not be declared final.
3.private constructors are acceptable, however the class should be marked final instead, as doing so means the class is to be extended.
4.Yes! Abstract classes can have constructors! Yes, when we define a class to be an Abstract Class it cannot be instantiated(i.e an object cannot be created) but that does not mean an Abstract class cannot have a constructor. Each abstract class must have a concrete subclass which will implement the abstract methods of that abstract class.
Answer:
All of the above is the correct answer to the given question .
Explanation:
As the Ken olson is the Ken Olson, president of the Digital Equipment Organization . Following are the predictions of Ken olson of the the technology that are wrong.
- Lack of creativity regarding the current applications that the user has would consider for the technology.
- Lack of creativity regarding the user or the client has liking.
- Lack of creativity on what the government would be charging ford. Any of these
So we will choose the Option all these.
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