# GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 1918 - 1923 of 2080

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## Question 1918

### Question

MCQ▾

If there are ten routers and eleven networks in intranet using link state routing, how many routing tables are there?

### Choices

Choice (4)Response

a.

10

b.

5

c.

11

d.

6

## Question 1919

### Question

MCQ▾

In Cryptography, the following uses transposition ciphers and the keyword is LAYER. Encrypt the following message. (Spaces are omitted during encryption) WELCOME TO NETWORK SECURITY!

### Choices

Choice (4)Response

a.

EETSICOOCYWMEKRONRU! LTWET

b.

WMEKREETSILTWETCOOCYONRU!

c.

LTWETONRU! WMEKRCOOCYEETSI

d.

ONRU! COOCYLTWETEETSIWMEKR

## Question 1920

### Question

MCQ▾

The maximum number of super keys for the relation schema R (E, F, G, H) with E as the key is

### Choices

Choice (4)Response

a.

5

b.

6

c.

8

d.

7

## Question 1921

MCQ▾

### Choices

Choice (4)Response

a.

AB

b.

FF

c.

0C

d.

C5

## Question 1922

### Question

MCQ▾

Consider the relation R (ABCDE) together with the functional dependencies:

The highest normal form of the above relation is

### Choices

Choice (4)Response

a.

BCNF

b.

3NF

c.

1 NF

d.

2NF

## Question 1923

### Question

MCQ▾

A tree has four vertices of degree 4, three vertices of degree 3 and two vertices of degree 2. If other vertices have degree 1, how many vertices are there in tree?

### Choices

Choice (4)Response

a.

19

b.

23

c.

21

d.

13

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