DOEACC Society 2007 Advanced Level Course In Computer Science 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 4 ques..

2. PART 1 is to be answered in the TEAR-OFFANSWER 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 2 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 ONE-40; PART 2 – 60)

PART ONE
(Answer all the questions)

1. Each 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 number of flip-flops needed to implement a 16-bit ring counter is ____
A) 4
B) 8
C) 16
D) 65, 536

1.2 The minimum hardware needed to construct a three to eight decode is ____
A) two 2-to-4 decoders
B) two 2-to-4 decodes and a 1-to-2 decoder
C) three 2-to-4 decoders
D) depends on the technology (TTL, CMOS, etc.)

1.3 A CPU has a 16-bit program counter. This means that the CPU can address ____
A) 16K memory locations
B) 32K memory locations
C) 64K memory locations
D) 256K memory locations

1.4 CARRY, in a half adder, can be found by using ____
A) EX - OR gate
B) AND gate
C) OR gate
D) EX - NOR gate











1.5 CPU gets the address of next instruction to be processed from
A) Instruction register
B) Memory address register
C) Index register
D) program counter

1.6 A bootstrap is ____
A) a memory device
B) a program to begin a computer
C) Hardware of computer used to check memory
D) an assembler

1.7 When the value 37H is divide by 17H, the remainder is
A) 00 H
B) 03 H
C) 07 H
D) 09 H

1.8 A linker is a program which generates ____
A) the executable program from object programs
B) an object- program from an assembly language program
C) an assembly language program from a high level language program
D) the executable program from a high level language program

1.9 Cycle stealing refers to ____
A) reduction in the number of clock cycles for memory access in a cache memory
B) overlapping of the memory refresh operation and memory learn operations in dynamic memories
C) reduction in instruction cycle time through instruction pipelining
D) None of the above

1.10 A nano control memory is implemented to
A) improve the speed of execution
B) reduce the overall control memory size
C) reduce the complexity of hardware

Earning:   Approval pending.