3i Infotech Papers: Sample Questions 936 - 938 of 1245

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Question number: 936

» Languages » C & C Plus Plus

Essay Question▾

Describe in Detail

What are models and meta models?


  • Model: -

    • It is a complete description of something (i. e. system).

    • A model is a simplification of reality with theoretical abstractions

  • Meta Model: -

    • Describes the model elements, syntax, and semantics of the notation allowing their manipulation.

    • A metamodel or surrogate model is a model of a model

    • Metamodeling is the process of generating such metamodels.

    • Metamodeling is the analysis, construction, and development of the frames, rules, constraints, models and theories applicable and useful for modeling a predefined class of problems.

Question number: 937

» Languages » Assembly Language

Short Answer Question▾

Write in Short

Expand MODEM


  • MODEM or modulator-demodulator is a hardware device connecting a computer or router to a broadband network.

  • It is typically an analogue to digital device.

  • A cable modem and DSL modem are two examples.

  • Modem can also use a network card in the computer.

Question number: 938

» Basic CS » Algorithms

Short Answer Question▾

Write in Short

What is ALE? Explain the functions of ALE in .


  • ALE is a control signal of MPU.

  • processor has address lines for bit address of a memory location.

  • Out of this address lines address lines were dedicated to transfer higher order address bits while the remaining lower orderbits of the address were sent through another lines multiplexed with the bit data lines.

  • Control signal “ALE” was sent by the processor to indicate the operation of this bit multiplexed bus- whether it is used to send the lower order address bits or to send the data bits.