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Bct2201:Computing And Communication Question Paper
Bct2201:Computing And Communication
Course:Bachelor Of Business Information Technology
Institution: Meru University Of Science And Technology question papers
Exam Year:2013
INSTRUCTIONS: Answer question one and any other two questions
QUESTION ONE (30 MARKS)
a. Explain the following concepts in Computer Architecture
i. Pipelining (4 Marks)
ii. Multiprocessing (2 Marks)
iii. Processor registers (2 Marks)
iv. Processor cache (2 Marks)
v. CPL (2Marks)
b. Consider a non-pipelined machine with 6 execution stages of lengths 80 ns, 80 ns,
90ns, 90 ns, 80 ns, 80 ns, 90 ns, 90 ns, 80 ns, and 80 ns,
i. Find the instruction latency on this machine (2 Marks)
ii. Calculate the time taken to executed 500 instructions (2 Marks)
c. Discuss the Importance of Flynn’s Taxonomy and Identify at the Classification of
Computer System. (7 Marks)
d. Explain the Von Neumann Computer Architecture with the help of a diagram
(7 Marks)
QUESTION TWO (20 MARKS)
a. The Bus architecture has a considerable influence on Performance with regard to
through put and responses time, as such the component Layout is crucial. Describe the
three computer bus subassemblies (6 Marks)
b. Critically examine and elucidate the Three Management Approaches deployed in
management of I/O. (9 Marks)
c. Discuss the Following Concept in relation to Bus Architecture in computer systems
i. Bus arbitration
ii. Bus synchronization (5 Marks)
QUESTION THREE (20 MARKS)
a. By use of Diagram discuss memory Hierarchy and its Particular Characteristics
(5 Marks)
b. The Raid Technology has evolved over a Period of Time, Using the unique
characteristics for Each Level Of Raid Identify where Level 1,2,5 would most be
appropriate. (6 Marks)
c. Discuss the Concept of Endians War and the Two main Protagonists (4 Marks)
d. Differentiate between LRU and NRU Replacement Strategies as used as replacement
Strategies. (5 Marks)
QUSTION FOUR (20 MARKS)
a. Explain the steps to follow in designing an Input/ Output system (7 Marks)
b. At the Heart of Computing is the Fetch Execution Cycle Describe the Steps involved
the Execution of Instructions (7 Marks)
c. The State of a process can be represented using a State Transition Diagram, Namely
Dormant, Ready, Executing and Suspended. As a process moves from Running state
to A suspended stated its must be serving an I/O requirement, which results to
triggering interrupt requests. By illustrations, discuss the methods that are deployed
in Handling of Interrupts. ( 6 Marks)
QUESTION FIVE (20 MARKS)
a. Give the output X for the following logic gates and draw its truth Table
(10 Marks)
C
A
B
X
b. The evolution of computer architecture has predominantly tended towards CISC,
but of late effort has been geared towards RISC architecture. Differentiate
between the two architectures. (5 Marks)
c. Discuss the two designs used in the Construction of Control Unit of the CPU.
(5 Marks)
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