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21.Memory. Management in Operating Systems is done by
a) Memory Management Unit b) Memory management software of the Operating System c) Kernel
Ans: : (b)
22.What is done for a Push opertion? Ans: : SP is decremented and then the value is stored.
23.Binary equivalent of 52 Ans: . 110100
24.Hexadecimal equivalent of 3452 Ans: 72A
25.Explain Just In Time Concept ? Ans: . Elimination of waste by purchasing manufacturing exactly when needed
26.A good way of unit testing s/w program is Ans: . User test
27.OOT uses Ans: . Encapsulated of detect methods
28.EDI useful in Ans: . Electronic Tr Ans: mission
29.MRPII different from MRP Ans: . Modular version of man redundant initials
30.Hard disk time for R/W head to move to correct sector Ans: . Latency Time
31.The percentage of times a page number bound in associate register is called Ans: . Bit ratio
32.Expand MODEM Ans: . Modulator and Demodulator
33.RDBMS file system can be defined as Ans: . Interrelated
34.Super Key is Ans: . Primary key and Attribute
35.Windows 95 supports (a) Multiuser (b) n tasks (c) Both (d) None Ans: . (a)
36.In the command scanf, h is used for Ans: . Short int
37.A process is defined as Ans: . Program in execution
38.A thread is Ans: . Detachable unit of executable code)
39.A thread is Ans: . Detachable unit of executable code)
40..How is memory management done in Win95 Ans: . Through paging and segmentation
41.What is meant by polymorphism Ans: . Redfinition of a base class method in a derived class
42.What is the essential feature of inheritance Ans: . All properties of existing class are derived
43.What does the protocol FTP do AnsTr Ans: fer a file b/w stations with user authentification
44.In the tr Ansport layer ,TCP is what type of protocol Ans: . Connection oriented
45.Why is a gateway used Ans: . To connect incompatible networks
46.How is linked list implemented Ans: . By referential structures
47.What method is used in Win95 in multitasking Ans: . Non preemptive check
48.What is a semaphore Ans: . A method synchronization of multiple processes
49.What is the precedence order from high to low ,of the symbols ( ) ++ / Ans: .( ) , ++, /
50.Preorder of A*(B+C)/D-G Ans: .*+ABC/-DG
51.What is the efficiency of merge sort Ans: . O(n log n)
52.In which layer are routers used Ans: .In network layer
53.Which of the following sorting algorithem has average sorting behavior "Bubble sort, merge sort, heap sort, exchange sort Ans: . Heap sort
54. In binary search tree which traversal is used for getting ascending order values"Inorder ,post order,preorder Ans: .Inorder
55. What are device drivers used for Ans: .To provide software for enabling the hardware
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