# GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 779 - 785 of 913

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## Question number: 779

MCQ▾

### Question

Nodes are connected to which topology cable by drop lines and taps

### Choices

Choice (4) Response

a.

Mesh topology

b.

Star topology

c.

Bus topology

d.

None of the above

## Question number: 780

MCQ▾

### Question

Which mode both stations can transmit and receive simultaneously?

### Choices

Choice (4) Response

a.

Half-duplex mode

b.

Simplex mode

c.

Full -duplex mode

d.

None of the above

## Question number: 781

MCQ▾

### Question

Which connection provides a dedicated link between two devices?

### Choices

Choice (4) Response

a.

Multipoint

b.

c.

Point-to-point

d.

None of the above

## Question number: 782

MCQ▾

### Question

Which area of network provides long-distance transmission of data, image etc over large geographic areas that may comprise a country and even the whole world.

### Choices

Choice (4) Response

a.

WAN

b.

LAN

c.

MAN

d.

All of the above

## Question number: 783

MCQ▾

### Question

The power we use at home has a frequency of 80 Hz (70 Hz in Europe). What is the period of this sine wave?

### Choices

Choice (4) Response

a.

78.3

b.

16.5

c.

12.5

d.

Question does not provide sufficient data or is vague

## Question number: 784

MCQ▾

### Question

Which mode, each station can both transmit and receive, but not at the same time

When one device is sending, the other can only receive, and vice versa

### Choices

Choice (4) Response

a.

Full-Duplex

b.

Simplex mode

c.

Half-duplex mode

d.

None of the above

## Question number: 785

MCQ▾

### Question

The loss in a cable is usually defined in decibels per kilometer (dB/km). If the signal at the beginning of a cable with -0.5 dBlkm has a power of 6 mW, what is the power of the signal At 5 km?

### Choices

Choice (4) Response

a.

4mW

b.

3mW

c.

8mW

d.

Question does not provide sufficient data or is vague

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