1
GATE CSE 2015 Set 2
Numerical
+1
-0
A binary tree $$T$$ has $$20$$ leaves. The number of nodes in $$T$$ having two children is _______________.
Your input ____
2
GATE CSE 2015 Set 2
MCQ (Single Correct Answer)
+2
-0.6
Which one of the following hash functions on integers will distribute keys most uniformly over $$10$$ buckets numbered $$0$$ to $$9$$ for $$𝑖$$ ranging from $$0$$ to $$2020$$?
A
$$h\left( i \right) = {i^2}\,mod\,\,10$$
B
$$h\left( i \right) = {i^3}\,mod\,\,10$$
C
$$h\left( i \right) = \left( {11 * {i^2}} \right)\,\bmod \,10$$
D
$$h\left( i \right) = \left( {12 * i} \right)\,\bmod \,10$$
3
GATE CSE 2015 Set 2
Numerical
+1
-0
With reference to the B+ tree index of order 1 shown below, the minimum number of nodes (including the Root node) that must be fetched in order to satisfy the following query: “Get all records with a search key greater than or equal to 7 and less than 15” is _________ GATE CSE 2015 Set 2 Database Management System - File Structures and Indexing Question 15 English
Your input ____
4
GATE CSE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Consider the following transaction involving two bank accounts x and y.
read (x) ; x: = x - 50; write (x); read (y); y: = y + 50;   write (y)

The constraint that the sum of the accounts x and y should remain constant is that of

A
Atomicity
B
Consistency
C
Isolation
D
Durability
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