3i Infotech Papers: Sample Questions 1074 - 1075 of 1245

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Question number: 1074

» Languages » Assembly Language

MCQ▾

Question

Buffering is

Choices

Choice (4) Response

a.

storage of data within transmitting medium until the receiver is ready to receive.

b.

the process of temporarily storing the data to allow for small variation in device speeds

c.

a method to reduce routing overhead.

d.

a method to reduce cross talks

Answer

b.

Explanation

  • Buffer is the process of temporarily storing the data to allow small variation in device speeds/

  • Atypically it is a reserved area of memory.

  • For example, in streaming audio or video from the internet, buffering saves some data locally before playing the music.

  • It is pre-loading of data into a certain area of memory known as a “buffer”.

  • The data can be accessed more quickly by computer’s processing units- CPU or GPU.

Question number: 1075

» Basic CS » Operating System

MCQ▾

Question

The maximum KE of the photoelectron emitted from a surface is dependent on

Choices

Choice (4) Response

a.

The potential of the collector electrode

b.

The intensity of incident radiation

c.

The angle of incidence of radiation of the surface

d.

The frequency of incident radiation

Answer

d.

Explanation

Equation of Kinetic Energy.

Equation of Kinetic Energy.

Equation of Kinetic Energy.

  • If we change the intensity of the incident beam keeping the frequency of light same, we only change the number of photons.

  • The change in that number cannot affect the kinetic energy of the emitted electrons.

  • The emission of electrons occurs due to a one electron one photon collision. If one photon of insufficient energy collides with an electron and then another one does, the energy of the electron does not become twice that of the incident photon- assuming that the energy gained from the first collision dissipates fast.

  • The maximum KE of the photoelectron emitted from a surface is dependent on the frequency of incident radiation – which changes the energy of each photon.