2002Äê9ÔÂÈ«¹ú¼ÆËã»úµÈ¼¶¿¼ÊÔËļ¶ÕæÌâ

53. Load factor ¦Á of the hash table is approximately
£ £ A£©0.28 B£©0.35 C£©0.54 D£©0.71
54. How many key comparisons are needed in searching
for key value 38?
£ £ A£©1 B£©2 C£©3 D£©4 
55. Which of the following operations belongs to
message passing?
£ £ A£©Read and write B£©send and receive
    C£©wait and signal D£©P and V
56. If file A has the capability of 724,the same
group¡¯s users of file A may do
£ £ A£©read A only B£©write A
    C£©execute A   D£©non-operation
57. In which phase of the software engineering process
 is the Software Requirements Specification developed?
£ £ A£©Definition phase  B£©engineering phase
    C£©maintenance phase D£©development phase
58. The prototyping method is a dynamic design processs,
which requires people who use prototyping method to have
the following capability of
£ £ A£©Proficient program expertise
    B£©immediately acquire requirement
    C£©coordinate & organize eloquently
    D£©handle tools smartly
59. For relation where primary key contains multiple
attributes, no non£­key attribute should be functionally
 dependent on a part of primary key. This relation
 R is at least in 
£ £ A£©INF B£©2NF C£©3NF D£©BCNF
60. Which of the following statements about object
oriented database is not correct?
£ £ A£©Each object has a unique object identify in
      the system.
    B£©Encapsulation and inheritance are two
      important features of object oriented database
    C£©A subclass can inherit the attributes and
      methods of all its superclasses
    D£©A supereloss includes the attributes and methods
      at all subclasses
61. Local bus can increase the data throughput.
 The bus that is most frequently used is
£ £ A£©VESA B£©EISA C£©MCA D£©PCI
62. Most frequently used algorithm for page
replacement is 
£ £ A£©LRU B£©FIFO C£© OPT D£©PPT
63. The following three concepts are essential to the
OSI model: service, interface and 
£ £ A£©Networks B£©applications C£©protocols D£©layers
64. LANs can be connected by using bridges,which
operate in the
£ £ A£©Physical layer B£©data link layer
    C£©network layer  D£©transport layer