# GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 1844 - 1847 of 2080

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## Question 1844

Appeared in Year: 2019 (UGC-NET)

### Question

MCQ▾

Let P be the set of all people. Let R be a binary relation on P such that (a, b) is in R if a is a brother of B. Is R symmetric, transitive, an equivalence relation, a partial order relation? (December)

### Choices

Choice (4)Response

a.

NO, NO, NO, NO

b.

NO, NO, YES, NO

c.

NO, YES, NO, NO

d.

NO, YES, YES, NO

## Question 1845

Appeared in Year: 2019 (UGC-NET)

### Question

MCQ▾

How many reflexive relations are there on a set with 4 elements? (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 1846

Appeared in Year: 2019 (UGC-NET)

### Question

MCQ▾

Let A be the base class in C ++ and B be the derived class from A with protective inheritance. Which of the following statement is false for class B? (December)

### Choices

Choice (4)Response

a.

Member function of class B cannot access private data of class A

b.

Member function of class B can access public data of class A

c.

Object of derived class B can access public base class data

d.

Both a. and c. are correct

## Question 1847

Appeared in Year: 2019 (UGC-NET)

### Question

MCQ▾

In a B-Tree, each node represents a disk block. Suppose one block holds 8192 bytes. Each key uses 32 bytes. In a B-tree of order there are keys. Since each branch is on another disk block, we assume a branch is of 4 bytes. The total memory requirement for a non-leaf node is (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

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