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Sta 114 Question Paper

Sta 114

Course:Bachelor Of Science In Computer Science

Institution: Rongo University question papers

Exam Year:2013

QUESTION ONE
a)explain the role of the various processing that may be done to master file. (6marks)
b)give the meaning of the following types of file organisations as used in statistical analysis.
-serial file organisation
-sequential file organisation
-index sequential file organisation
-random file organisation (8marks)
c)differentiate with respect to x
t=3(x+2)^3-2(4sin6X+(cos2x)/4) (6marks)

d)obtain the differential coefficient of
y=(3/5)x^3-2/x^2+5v(x^7+5) (5marks)

QUESTION TWO
a)for the curve f(x)=3x^2-2/x^2+2x-9,evaluate
f(2)÷ f(1)
f(2+a)
f(2+a)-f(2)/a (6marks)

b)find the differential of f(x)=3x^3 from first principle (9marks)

QUESTION THREE
with appropriate examples explain the relationship between the following terms as used in computerised statistical analysis.BIT,character,field,record,block,file and databases.

QUESTION FOUR
a)assuming that you have been hired as the university''s monitoring and evaluation officer in charge of statistics analysis,give a discussion to persuade the university to implement a data based system as opposed to file based analysis system. (15marks)

b)explain five limitations of database management systems that you will warn the administration against in case the university does the conversion from the legacy system. (15marks)

QUESTION FIVE
a)discuss 4 reasons why we use binary systems in computers. (8marks)

b)clearly state at least 4 merits and 3 demerits of using binary coded decimals (7marks)

QUESTION SIX
a)define the following terms as used in binary systems
-Bit
-Nibble
-Field
-Parity bit (4marks)

b)convert the following decimal numbers to binary
-25.72410 (3marks)
-8910 (2marks)

c)perform the following operations
-3508+7628 (3marks)
-6AB16+7BC16 (3marks)

Sta 114 Question Paper

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