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Exam Details

ISROComputer Science & Information Technology (CS) DECEMBER 2017

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Questions 80
Duration 180 mins
Package GATE & PSU CS - Previous Year Papers

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Subject distribution

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Topic distribution

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Subtopic distribution

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Difficulty distribution

Medium 67 83.8%
Hard 11 13.8%
Easy 2 2.5%

Question type distribution

Multiple Choices 80 100%

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Sample questions from this paper

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1
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
Consider the following schema: Sailors (sid, sname, rating, age) Boats(bid, bname, colour) Reserves (sid, bid, day) Two boats can have the same name but the colour differentiates them The two relations If / is division operation, the above set of relations represents the query
A
Names of sailors who has reserved all boats called Ganga
B
Names of sailors who have reserved at least one Ganga boat
C
Names of sailors who have reserved at most one Ganga boat
D
Names of sailors who have not reserved any Ganga boat
2
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
Type IV JDBC driver is a driver.
A
which is written in C++
B
which requires an intermediate layer
C
which communicates through Java sockets
D
which translates JDBC function calls into API not native to DBMS
3
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
Consider the following table : Faculty (facName, dept, office, rank, dateHired) (Assume that no faculty member within a single department has same name. Each faculty member has only one office identified in office). 3NF refers to third normal form and BNCF refers to Boyce-Codd normal form Then faculty is
A
Not in 3NF, in BCNF
B
In 3NF, not in BCNF
C
In 3NF, in BCNF
D
Not in 3NF, not in BCNF
4
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
Using public key cryptography, adds a digital signature σ to a message encrypts and sends it to where it is decrypted. Which one of the following sequence of keys is used for operations?
A
Encryption : private key followed by private key. Decryption : public key followed by public key
B
Encryption : private key followed by public key; Decryption : public key followed by private key
C
Encryption : private key followed by public key. Decryption : private key followed by public key
D
Encryption : public key followed by private key; Decryption : public key followed by private key
5
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
Which of the following are used to generate a message digest by the network security protocols? P) SHA-256 Q) AES R) DES S) MD5
A
P and S only
B
R and S only
C
P an R only
D
P and Q only
6
2017 · Unclassified
ISROComputer Science & Information Technology (CS) DECEMBER 2017
In the IPv4 addressing format, the number of networks allowed under Class B addresses is
A
220
B
224
C
214
D
221