# GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 1229 - 1233 of 2080

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## Question 1229

### Question

MCQ▾

The Relational algebra operator “ρ” called “rho” is used on Relations for? (Model paper III)

### Choices

Choice (4)Response

a.

Selection

b.

Renaming

c.

Anti-join

d.

Semi-join

## Question 1230

### Question

MCQ▾

In Operating systems, Thrashing can result in … ? (Model paper II)

### Choices

Choice (4)Response

a.

Hard drive collapse

b.

Excessive swapping

c.

Inefficient system

d.

All a., b. and c. are correct

## Question 1231

### Question

MCQ▾

What is this for loop being used for?

1. `for (i=1;i<=n;++i)`
2. `{`
3. `    Product⚹=i;`
4. `}`

(Model paper II)

### Choices

Choice (4)Response

a.

Factorial

b.

Permutation

c.

HCF

d.

Combination

## Question 1232

### Question

MCQ▾

Imagine a CAD software to which the COCOMO model is being applied. It has been estimated that the project has 33200 Lines of Code. The values of the different exponents are –

What is the expected project duration? (Model paper III)

### Choices

Choice (4)Response

a.

months

b.

months

c.

months

d.

months

## Question 1233

### Question

MCQ▾

Assume a disk having cylinders, which are numbered from to , find the number of tracks, the disk arm must move to satisfy all the requests present in the disk queue. Assume the last request service was at track and the head is moving towards track number . The queue, in FIFO order, happens to contain requests for the following tracks:

(Assume SCAN algorithm) (Model paper II)

### Choices

Choice (4)Response

a.

827

b.

918

c.

928

d.

892

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