DOEACC Society 2007 DOEACC A Level A4-R3 Computer Organization - Question Paper

A4-R3: COMPUTER ORGANIZATION
NOTE:
1. There are 2 PARTS in this Module/Paper. PART 1 contains 4 ques.
and PART 2 contains 5 ques..
2. PART 1 is to be answered in the TEAR-OFF ans SHEET only, attached to
the ques. paper, as per the instructions contained therein. PART 1 is NOT to
be answered in the ans book.
3. Maximum time allotted for PART 1 is 1 HOUR. ans book for PART TWO
will be supplied at the table when the ans sheet for PART 1 is returned.
However, candidates, who complete PART 1 earlier than 1 hour, can collect the
ans book for PART 2 immediately after handing over the ans sheet for
PART ONE.
TOTAL TIME: three HOURS TOTAL MARKS: 100
(PART 1 – 40; PART 2 – 60)
PART ONE
(Answer all the questions)
1. every ques. beneath provide a multiple option of answers. select the most
improper 1 and enter in the “tear-off” ans sheet attached to the ques.
paper, subsequent instructions therein. (1 x 10)
1.1 The minimum time delay ranging from the initiations of 2 independent memory operations
is called
A) Cycle time
B) Access time
C) Latency time
D) None of the above
1.2 From a provided tautology, a different tautology can be derived by interchanging
A) 0 and 1
B) AND and OR
C) Both A) and B)
D) Impossible to derive
1.3 select the incorrect statement
A) Bus is a group of info carrying wires
B) Bus does not create delay in data transfer
C) Bus can carry data or address
D) A bus can be shared by more than 1 device
1.4 The binary equivalent of the decimal number 0.4375 is
A) 0.0111
B) 0.1011
C) 0.1100
D) 0.1010
1.5 Which of the subsequent logic families is well suited for high speed operation
A) TTL
B) ECL
C) MOS
A4-R3 Page one of five January, 2007
D) CMOS
A4-R3 Page two of five January, 2007
1.6 Bubble memories are preferable to floppy disks because
A) Of their higher transfer rate
B) Cost needed to store a bit is less
C) They consume less power
D) None of the above
1.7 The cost of storing 1 bit of info is minimum in case of
A) Cache
B) Register
C) RAM
D) None of the above
1.8 Pseudoinstructions are
A) Assembler Directives
B) Instructions in any program that has no corresponding machine code
C) Instructions in any program whose presence or absence will not change the output for
any input
D) None of the above
1.9 A flip flop circuit can be used for
A) Counting
B) Scaling
C) Rectification
D) Demodulation
1.10 The number of address and data lines for a memory of four K X 16 is:
A) 10, 16

Earning:   Approval pending.