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## Solved Questions Paper-2 UGC-NET Computer Science June 2015

21.Consider the given graph:

Its Minimurn Cost Spanning Tree is --------
A.
B.
C.
D.
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Explanation
22.22: The inorder and preorder Traversal of binary Tree are dbeafcg and abdecfg respectively.The post order traversal is ------
A.dbefacg
B.debfagc
C.dbefcga
D.debfgca
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Explanation
23.Level order Traversal of a rooted Tree can be done by starting from root and performing -
B.Depth first search
C.Root search
D.Deep search
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24.The average case occurs in the Linear Search Algorithm when :
A.The item to be searched is in some where middle of the Array
B.The item to be searched is not in the array
C.The item to be searched is in the last of the array
D.The item to be searclred is either in the last or not in the array
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Explanation
25.To determine the efficiency of an algorithm the time factor is measured by
A.Counting micro seconds
B.Counting number of key operations
C.Counting number of statement
D.Counting kilobytes of algorithm
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Explanation
26.Which of the following protocols is an application layer protocol that establishes, manages and terminates multimedis sessions?
A.Session Maintenance Protocol
B.Real - time Streaming Protocol
C.Real - time Transport Control Protocol
D.Session Initiation Protocol
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Explanation
27.Match the following port numbers with their uses :
List-I List-II
(a) 23 (i) World wide web
(c) 80 (iii) USENET news
(d) 119 (iv) Email

(a) (b) (c) (d)
A.(iv) (i) (ii) (iii)
B.(ii) (i) (iv) (iii)
C.(ii) (iv) (iii) (i)
D.(ii) (iv) (i) (iii)
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28.Which of the following is not associated with the session layer ?
A.Dialog control
B.Token management
C.Semantics of the information transmitted
D.Synchronization
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29. What is the size of the'total length' field in IPv 4 datagram ?
A.4 bits
B.8 bits
C.16 bits
D.32 bits
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30.Which of the following isf are restriction(s) in classless addressing ?
A.The number of addresses needs to be a power of 2.
B.The mask needs to be included in the address to define the block.
C.The starting address must be divisible by lhe number of addresses in the block.
D.All of the above
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Author Does Not claim of any answer these answers are as per expert opinion

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