Table of Content

UGC NET Computer Science : June 2012 – Paper 2 (Solved Papers)


Question 1
B+ tree are preferred to binary tree in Database because
A
Disk data transfer rates are much less than memory data transfer rate
B
Disk access is much slower than memory access
C
Disks are more reliable than memory
D
Disk capacity are greater than memory capacities
Question 2
A Transaction Manager is which of the following ?
A
Maintains appropriate concurrency control
B
All of the above
C
Maintains a log of transactions
D
Maintains before and after database images
Question 3
Leaves of which of the following trees are at the same level ?
A
AVL-tree
B
Expression tree
C
Binary tree
D
B-tree
Question 4
Which of the following TCP/IP Internet protocol is diskless machine uses to obtain its IP address from a server ?
A
ARP
B
X.25
C
RAP
D
RIP
Question 5
Decryption and encryption of data are the responsibility of which of the following layer ?
A
Data Link layer
B
Presentation layer
C
Session layer
D
Physical layer