Saturday, 19 January 2013

UGC NET Computer Science Solved Paper II - December 2009


Any error whose cause cannot be identified anywhere within the software system is called ________
 A.   Internal error
 B.   External error
 C.   Inherent error
 D.   Logic error
        
What would be the output of the following program, if run from the command line as “myprog 1 2 3” ?
main (int argc, char * argv[ ])
{ int i ;
i = argv[1] + argv[2] + argv[3] ;
printf (“% d”, i) ;
}
 A.   123
 B.   6
 C.   Error
 D.   “123”
        
 A page fault
 A.   is an error specific page.
 B.   is an access to the page not currently in memory.
 C.   occur when a page program occur in a page memory.
 D.    page used in the previous page reference.
        
P : “Program is a step by step execution of the instructions”. Given P, which of the following is true ?
 A.   Program is a subset of an instruction set.
 B.   Program is a sequence of a subset of an instruction set.
 C.   Program is a partially ordered set of an instruction set.
 D.   All of the above
        
 The Unix command used to find out the number of characters in a file is
 A.   nc
 B.   wc
 C.   chcnt
 D.   c
        
In case of Bus/Tree topology signal balancing issue is overcome by
 A.   Modulation
 B.   Polling
 C.   Segmentation
 D.   Strong transmitter
        
The name of the transaction file shall be provided by the operator and the file that contains the edited transactions ready for execution shall be called
 A.   Batch. Exe
 B.   Trans. Exe
 C.   Opt. Exe
 D.   Edit.Exe
        
 Match the following :
(i) Ethernet                     (a) Deterministic
(ii) Token Ring               (b) Utilize the full wire speed
(iii) Cut-through switch  (c) Prevent looping
(iv) Spanning tree           (d) Checking valid address
 A.   i – d, ii – a, iii – b, iv – c
 B.   i – d, ii – a, iii – b, iv – c
 C.   i – d, ii – d, iii – c, iv – b
 D.   i – d, ii – c, iii – b, iv – a
        
The highest noise margin is offered by
 A.   BICMOS
 B.   TTL
 C.   ECL
 D.   CMOS
        
Black Box testing is done
 A.   to show that s/w is operational at its interfaces i.e. input and output.
 B.   to examine internal details of code.
 C.   to examine internal details of code.
 D.   none of above.
        
With regard to linked list, which of the following statement is false ?
 A.   An algorithm to search for an element in a singly linked list requires 0(n) operations in the worst case.
 B.   An algorithm for deleting the first element in a singly linked list requires 0(n) operations in the worst case.
 C.   An algorithm for finding the maximum value in a circular linked list requires 0(n) operations.
 D.   An algorithm for deleting the middle node of a circular linked list requires 0(n) operations.
        
Recorded software attributes can be used in the following endeavours :
(i) Cost and schedule estimates.
(ii) Software product reliability predictions.
(iii) Managing the development process.
(iv) No where
 A.   (i) (ii) (iv)
 B.   (ii) (iii) (iv)
 C.   (i) (ii) (iii)
 D.   (i) (ii) (iii) (iv)
        
Analysis of large database to retrieve information is called
 A.   OLTP
 B.   OLAP
 C.   OLDP
 D.   OLPP
        
Circle has ____________
 A.   No vertices
 B.   Only 1 vertex
 C.   8 vertices
 D.   None of these
        
 The simplified form of the Boolean expression (X+Y+XY)(X+Z) is
 A.   X + Y + ZX + Y
 B.   XY – YZ
 C.   X + YZ
 D.   XZ + Y
        
The unlicensed National Information Infrastructure band operates at the _________ frequency
 A.   2.4 GHz
 B.   5 GHz
 C.   33 MHz
 D.   5 MHz
        
In an absolute loading scheme which loader function is accomplished by assembler ?
 A.   re-allocation
 B.   allocation
 C.   linking
 D.   loading
        
Synthesized attribute can be easily simulated by a
 A.   LL grammar
 B.   Ambiguous grammar
 C.   LR grammar
 D.   None of the above
        
Which of the following statement is wrong ?
I. 2-phase locking protocol suffer from dead lock.
II. Time stamp protocol suffer from more aborts.
III. A block hole in a DFD is a data store with only inbound flows.
IV. Multivalued dependency among attribute is checked at 3 NF level.
V. An entity-relationship diagram is a tool to represent event model.
 A.   I, II, II
 B.   II, III, IV
 C.   III, IV, V
 D.   II, IV, V
        
The single stage network is also called
 A.   one sided network
 B.   two sided network
 C.   recirculating network
 D.   pipeline network
        
Which of the statements are true ?
I. Function overloading is done at compile time.
II. Protected members are accessible to the member of derived class.
III. A derived class inherits constructors and destructors.
IV. A friend function can be called like a normal function.
V. Nested class is a derived class.
 A.   I, II, III
 B.   II, III, V
 C.   III, IV, V
 D.   I, II, IV
        
If the number of leaves in a strictly binary tree is an odd number, then what can you say with full conviction about total number of nodes in the tree ?
 A.   It is an odd number.
 B.   It is an even number
 C.   It cannot be equal to the number of leaves.
 D.   It is always greater than twice the number of leaves.
        
The  of the operation (10111)2*(1110)2 in hex equivalence is
 A.   150
 B.   241
 C.   142
 D.   101011110
        
Recursive functions are executed in a
 A.   First in first out-order
 B.   Last in first out-order
 C.   Parallel fashion
 D.   Load balancing
        
Another name of IEEE 802.11 a is ____________
 A.    Wi-Max
 B.   Fast Ethernet
 C.   Wi-Fi
 D.   802.11 g
        
The number of edges in a complete graph of n vertices is
 A.   n
 B.   n(n – 1)/2
 C.    n(n + 1)/2
 D.   n2/2
        
Which of the following are Data Link Layer standard ?
1. Ethernet       2. HSSI      3. Frame Relay
4. 10 – Base T  5. Token Ring
 A.   1, 2, 3
 B.   1, 3, 5
 C.   1, 3, 4, 5
 D.   1, 2, 3, 4, 5
        
Specialization is __________ process.
 A.   top-down
 B.   bottom up
 C.   both (A) and (B)
 D.   none of these
        
Device on one network can communicate with devices on another network via a
 A.   Hub/Switch
 B.   Utility server
 C.   File server
 D.   Gateway
        
A hash function f defined as f(key) = key mod 7, with linear probing used to resolve collisions. Insert the keys 37, 38, 72, 48, 98 and 11 into the table indexed from 0 to 6. What will be the location of 11 ?
 A.   3
 B.   4
 C.   5
 D.   6
        
How many 1’s are present in the binary representation of
3 × 512 + 7 × 64 + 5 × 8 + 3
 A.   8
 B.   9
 C.   10
 D.   11
        
 A semaphore count of negative n means (s=–n) that the queue contains ________ waiting processes.
 A.   n + 1
 B.   n
 C.   n - 1
 D.   0
        
Software Engineering is a discipline that integrates _________ for the development of computer software.
 A.   Process
 B.   Methods
 C.   Tools
 D.   All
        
The E-R model is expressed in term of
I. Entities
II. The relationship among entities.
III. The attributes of the entities.
IV. Functional relationship.
 A.   I, II
 B.   I, II, IV
 C.   II, II, IV
 D.   I, II, III
        
What is the maximum window size in sliding window protocol used in a computer network ?
 A.   4
 B.   8
 C.   15
 D.   16
        
Contex-free Grammar (CFG) can be recognized by
 A.   Finite state automata
 B.   2-way linear bounded automata
 C.   push down automata
 D.   both (B) and (C)
        
A program is located in the smallest available hole in the memory is _________
 A.   best – fit
 B.   first – bit
 C.   worst – fit
 D.   buddy
        
Which technology is sometime referred to as wireless cable ?
 A.   MMDS
 B.   ATM
 C.   LMDS
 D.   CDMA
        
A __________ is a special method used to initialize the instance variable of a class.
 A.   Member function
 B.   Destructor
 C.   Constructor
 D.   Structure
        
A function that has no partial functional dependencies is in __________ form.
 A.   3 NF
 B.   2 NF
 C.   4 NF
 D.   BCNF
        
 In the process management Round-robin method is essentially the pre-emptive version of _________
 A.   FILO
 B.   FIFO
 C.   SSF
 D.   Longest time first
        
Encapsulation is
 A.   Dynamic binding
 B.   A mechanism to associate the code and data.
 C.   Data abstraction
 D.   Creating new class
        
Match the following :
(1) Determinants                (a) No attribute can be added
(2) Candidate key               (b) Uniquely identified a row
(3) Non-redundancy           (c) A constraint between two attribute
(4) Functional dependency (d) Group of attributes on the left
hand side of arrow of function dependency.
 A.   1 – d, 2 – b, 3 – a, 4 – c
 B.   2 – d, 3 – a, 1 – b, 4 – c
 C.   4 – a, 3 – b, 2 – c, 1 – d
 D.   3 – a, 4 – b, 1 – c, 2 – d
       

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