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QUESTION: 1

A turing machine is a

Solution:

A turing machine is abstract or hypothetical machine thought by mathematician Alan Turing in 1936 capable of simulating any algorithm, however complicated it is.

QUESTION: 2

A turing machine operates over:

Solution:

The turing machine operates on an infinite memory tape divided into cells. The machine positions its head over the cell and reads the symbol.

QUESTION: 3

Which of the functions are not performed by the turing machine after reading a symbol?

Solution:

After the read head reads the symbol from the input tape, it performs the following functions:

a) writes a symbol(some model allow symbol erasure/no writing)

b) moves the tape left or right (some models allows no motion)

c) proceeds with subsequent instruction or goes either into accepting halting state or rejecting halting state.

QUESTION: 4

Alan invented a-machine in 1936. The 'a' in a-Machine stands for?

Solution:

The turing machine was invented by Alan turing in 1936. He named it as a-machine(automatic machine).

QUESTION: 5

Which of the problems were not answered when the turing machine was invented?

Solution:

Invention of turing machine answered a lot of questions which included problems like decision problem, etc.) . Alan was able to prove the properties of computation using such model.

QUESTION: 6

The ability for a system of instructions to simulate a Turing Machine is called _________

Solution:

Turing Completeness the ability for a system of instructions to simulate a Turing machine. A programming language that is Turing complete is theoretically capable of expressing all tasks accomplishable by computers; nearly all programming languages are Turing complete.

QUESTION: 7

uring machine can be represented using the following tools:

Solution:

We can represent a turing machine, graphically, tabularly and diagramatically.

QUESTION: 8

Which of the following is false for an abstract machine?

Solution:

A n abstract machine also known as abstract computer, is a theoretical model of computer or hardware system in automata theory. Abstraction in computing process usually assumes a discrete time paradigm.

QUESTION: 9

Fill in the blank with the most appropriate option.

Statement: In theory of computation, abstract machines are often used in ___________ regarding computability or to analyze the complexity of an algorithm.

Solution:

A thought experiment considers some hypothesis, theory or principle for the purpose of thinking through its consequences.

QUESTION: 10

Statement: RAM model allows random access to indexed memory locations.

Solution:

In computer science, Random access machine is an abstract machine in the general class of register machines. Random access machine should not be confused with Random access memory.

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