3i Infotech Papers: Sample Questions 859 - 861 of 1245

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Question number: 859

» Languages » Assembly Language

MCQ▾

Question

Time taken for satellite hop in voice communication is

Choices

Choice (4) Response

a.

seconds

b.

seconds

c.

seconds

d.

second

Answer

d.

Explanation

Package Delay is travel time of the signal from transmitter station to the receiver station over satellite. For the single-hop satellite connection, delay of around is caused by the distance between the satellite and the location on the Earth.

Question number: 860

» Languages » Java

Essay Question▾

Describe in Detail

What is lightweight component?

Explanation

Understanding of lightweight components.

Understanding of Lightweight Components.

Understanding of lightweight components.

  • Swing components depend less on the target platform and use less of the native GUI resource.

  • The swing components that do not rely on native GUI are referred to as lightweight components- no native screen resource of their own, so ‘lighter’.

  • Lightweight components rely on the screen resource from an ancestor in the containment hierarchy, possibly the underlying frame object.

  • They subclass java. awt. component directly implementing the look and feel of the component in java.

  • They efficiently utilize system resource, can be transparent and not be rectangular.

  • LightweightPanel class that subclasses Container can also be used.

Question number: 861

» Languages » C & C Plus Plus

Short Answer Question▾

Write in Short

What does error ‘NULL pointer assignment’ mean and what causes this error?

Explanation

  • NULL pointer error happens when the program tries to store value in the location pointed to by the NULL pointer.

  • A null pointer assignment is a runtime error.