# Samsung Papers: Sample Questions 9 - 10 of 15

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## Question number: 9

### Write in Short

Asoka is as younger as Vimal and as older as Arun. The sum of Vimal and Arun age is 40. Then what will be Ashoka’s age?

### Explanation

Let Ashoka’s age be x years, Vimal’s age be y years and Arun’s age be z years.

Asoka is as younger as Vimal and as older as Arun i. e. x – z = y – x

i. e.

In the question it is given that sum of Vimal and Arun’s age is 40 i. e. y + z = 40

Ashoka’s age will be 20 years.

## Question number: 10

MCQ▾

### Question

Which of the following are the aadvantages of digital over analog signal? (2004)

### Choices

Choice (4) Response

a.

Data security and integrity

b.

Noise immunity

c.

Efficient transmission

d.

All a. , b. and c. are correct

d.

### Explanation

Advantages of digital signal over analog signal are listed below.

• Digital signals do not get corrupted by noise etc. You are sending a series of numbers that represent the signal of interest (i. e. audio, video etc. )

• Digital signals typically use less bandwidth. This is just another way to say you can cram more information (audio, video) into the same space.

• Digital can be encrypted so that only the intended receiver can decode it (like pay per view video, secure telephone etc. )

• Enables transmission of signals over a long distance.

• Transmission is at a higher rate and with a wider broadband width.

• It is more secure.

• It is also easier to translate human audio and video signals and other messages into machine language.

• There is minimal electromagnetic interference in digital technology.

• It enables multi-directional transmission simultaneously.