1
GATE CSE 2007
MCQ (Single Correct Answer)
+1
-0.3
Consider the following two statements:
i. A hash function (these are often used for computing digital signatures) is an injective function.
ii. encryption technique such as DES performs a permutation on the elements of its input alphabet.
Which one of the following options is valid for the above two statements?
A
Both are false
B
Statement (i) is true and the other is false
C
Statement (ii) is true and the other is false
D
Both are true
2
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
A hash table contains 10 buckets and uses linear probing to resolve collisions. The key values are integers and the hash function used is key % 10. If the values 43, 165, 62, 123, 142 are inserted in the table, in what location would the key value 142 be inserted?
A
2
B
3
C
4
D
6
3
GATE CSE 2004
MCQ (Single Correct Answer)
+1
-0.3
Given the following input (4322, 1334, 1471, 9679, 1989, 6171, 6173, 4199) and the hash function x mod 10, which of the following statements are true?
i) 9679, 1989, 4199 hash to the same value
ii) 1471, 6171 has to the same value
iii) All elements hash to the same value
iv) Each element hashes to a different value
A
i only
B
ii only
C
i and ii only
D
iii or iv
4
GATE CSE 1996
MCQ (Single Correct Answer)
+1
-0.3
An advantage of chained hash table (external hashing) over the open addressing scheme is
A
Worst case complexity of search operations is less
B
Space used is less
C
Deletion is easier
D
None of the above
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Software Engineering
Web Technologies
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