Languages-Assembly Language [3i Infotech Placement]: Sample Questions 38 - 39 of 51

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Question 38

Assembly Language

Question

MCQ▾

Max number of satellite hops allowed in voice communication is:

Choices

Choice (4)

a.

Two hops

b.

Four hops

c.

More than 1

d.

Only one

Answer

a.

Explanation

  • Max satellite hops allowed in voice communication is two.
  • Maximum performance out of the satellite segment is required for reasonable cost of the service.
  • In a local or geographical networks, satellites are the bottleneck, because of the delay and throughput constraints.
  • At the same time large number of persons living in remote areas achieve a broadband access to the internet using satellites.
  • Limiting the number of hops to is a compromise between connecting remote locations and providing reasonable quality of service.

Question 39

Assembly Language
Edit

Describe in Detail

Essay▾

What is the essential feature of inheritance?

Explanation

Understanding of Base Class and Derived Class
  • Inheritance interface looks like class but is not a class.
  • In Java multiple inheritances is implemented using interfaces.
  • An interface can have methods and variables like the class but the methods declared in interface are by default abstraction, that is they are virtual.
  • Inheritance makes application more flexible because classes that inherit from a common superclass can be used interchangeably as long as the return type of a method is superclass.

Advantage of interfaces:

Reusability

  • Facility to use public methods of base class without rewriting.

Extensibility

  • Extending the base class business logic in the derived class

Data hiding

  • Base class can make some data private so that it is altered by the derived class.

Overriding

  • Enables overriding the methods of the base class for meaningful implementation in the derived class.
Advantage of Interfaces

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