McqMate
101. |
Translation from symbolic program into Binary is done in_____. |
A. | . two passes. |
B. | . directly |
C. | . three passes. |
D. | . four passes. |
Answer» A. . two passes. |
102. |
The instruction ‘ORG O’ is a______. |
A. | . machine instruction. |
B. | . pseudo instruction. |
C. | . high level instruction. |
D. | . memory instruction. |
Answer» B. . pseudo instruction. |
103. |
‘Aging registers’ are _______. |
A. | . counters which indicate how long ago their associated pages have been referenced. |
B. | . registers which keep track of when the program was last accessed. |
C. | . counters to keep track of last accessed instruction. |
D. | . counters to keep track of the latest data structures referred. |
Answer» A. . counters which indicate how long ago their associated pages have been referenced. |
104. |
Memory unit accessed by content is called______. |
A. | . read only memory |
B. | . programmable memory |
C. | . virtual memory |
D. | . associative memory |
Answer» D. . associative memory |
105. |
_________ register keeps tracks of the instructions stored in program stored in memory. |
A. | . ar (address register) |
B. | . xr (index register) |
C. | . pc (program counter) |
D. | . ac (accumulator) |
Answer» C. . pc (program counter) |
106. |
n bits in operation code imply that there are ___________ possible distinct operators. |
A. | . 2n |
B. | . 2n |
C. | . n/2 |
D. | . n2 |
Answer» B. . 2n |
107. |
A three input NOR gate gives logic high output only when_____. |
A. | . one input is high |
B. | . one input is low |
C. | . two input are low |
D. | . all input are high |
Answer» D. . all input are high |
108. |
The circuit converting binary data in to decimal is_____. |
A. | . encoder |
B. | . multiplexer |
C. | . decoder |
D. | .code converter |
Answer» D. .code converter |
109. |
The multiplicand register & multiplier register of a hardware circuit implementing booth’s algorithm have (11101) & (1100). The result shall be ______. |
A. | . (812)10 |
B. | . (-12)10 |
C. | . (12)10 |
D. | . (-812)10 |
Answer» A. . (812)10 |
110. |
PSW is saved in stack when there is a _____. |
A. | . interrupt recognized |
B. | . execution of rst instruction |
C. | . execution of call instruction |
D. | . all of these |
Answer» A. . interrupt recognized |
111. |
In computers, subtraction is carried out generally by____. |
A. | . 1’s complement method |
B. | . 2’s complement method |
C. | . signed magnitude method |
D. | . bcd subtraction method |
Answer» B. . 2’s complement method |
112. |
The main memory in a Personal Computer (PC) is made of_____. |
A. | . cache memory. |
B. | . static ram |
C. | . dynamic ram |
D. | . both (a).and (b). |
Answer» D. . both (a).and (b). |
113. |
Cache memory works on the principle of_____. |
A. | . locality of data |
B. | . locality of memory |
C. | . locality of reference |
D. | . locality of reference & memory |
Answer» C. . locality of reference |
114. |
An n-bit microprocessor has_____. |
A. | . n-bit program counter |
B. | . n-bit address register |
C. | . n-bit alu |
D. | . n-bit instruction register |
Answer» D. . n-bit instruction register |
115. |
When CPU is executing a Program that is part of the Operating System, it is said to be in _____. |
A. | . interrupt mode |
B. | . system mode |
C. | . half mode |
D. | . simplex mode |
Answer» B. . system mode |
116. |
Logic X-OR operation of (4ACO)H& (B53F)H results _____. |
A. | . aacb |
B. | . 0000 |
C. | . ffff |
D. | . abcd |
Answer» C. . ffff |
117. |
Then each word of cache memory shall be_____. |
A. | . 11 bits |
B. | . 21 bits |
C. | . 16 bits |
D. | . 20 bits |
Answer» C. . 16 bits |
118. |
A Stack-organised Computer uses instruction of _____. |
A. | . indirect addressing |
B. | . two-addressing |
C. | . zero addressing |
D. | . index addressing |
Answer» C. . zero addressing |
119. |
In a program using subroutine call instruction, it is necessary______. |
A. | . initialize program counter |
B. | . clear the accumulator |
C. | . reset the microprocessor |
D. | . clear the instruction register |
Answer» D. . clear the instruction register |
120. |
Virtual memory consists of _______. |
A. | . static ram |
B. | . dynamic ram |
C. | . magnetic memory |
D. | . none of these |
Answer» A. . static ram |
121. |
In signed-magnitude binary division, if the dividend is (11100)2 and divisor is (10011)2 then the result is ______. |
A. | . (00100)2 |
B. | . (10100)2 |
C. | . (11001)2 |
D. | . (01100)2 |
Answer» B. . (10100)2 |
122. |
Generally Dynamic RAM is used as main memory in a computer system as it______. |
A. | . consumes less power |
B. | . has higher speed |
C. | . has lower cell density |
D. | . needs refreshing circuitry |
Answer» B. . has higher speed |
123. |
Write Through technique is used in which memory for updating the data_____. |
A. | . virtual memory |
B. | . main memory |
C. | . auxiliary memory |
D. | . cache memory |
Answer» D. . cache memory |
124. |
Cache memory acts between_______. |
A. | . cpu and ram |
B. | . ram and rom |
C. | . cpu and hard disk |
D. | . none of these |
Answer» A. . cpu and ram |
125. |
The circuit used to store one bit of data is known as ______. |
A. | . encoder |
B. | . or gate |
C. | . flip flop |
D. | . decoder |
Answer» C. . flip flop |
126. |
Von Neumann architecture is ______. |
A. | . sisd |
B. | . simd |
C. | . mimd |
D. | . misd |
Answer» A. . sisd |
127. |
In a vectored interrupt. |
A. | . the branch address is assigned to a fixed location in memory. |
B. | . the interrupting source supplies the branch information to the processor through an interrupt vector. |
C. | . the branch address is obtained from a register in the processor |
D. | . none of the above |
Answer» B. . the interrupting source supplies the branch information to the processor through an interrupt vector. |
128. |
. In a memory-mapped I/O system, which of the following will not be there? |
A. | . lda |
B. | . in |
C. | . add |
D. | . out |
Answer» A. . lda |
129. |
If memory access takes 20 ns with cache and 110 ns without it, then the ratio (cache uses a 10 ns memory) is _____. |
A. | . 93% |
B. | . 90% |
C. | . 88% |
D. | . 87% |
Answer» B. . 90% |
130. |
The addressing mode used in an instruction of the form ADD X Y, is _____. |
A. | . absolute |
B. | . indirect |
C. | . index |
D. | . none of these |
Answer» C. . index |
131. |
_________ register keeps track of the instructions stored in program stored in memory. |
A. | . ar (address register) |
B. | . xr (index register) |
C. | . pc (program counter) |
D. | . ac (accumulator) |
Answer» C. . pc (program counter) |
132. |
The idea of cache memory is based ______. |
A. | . on the property of locality of reference |
B. | . on the heuristic 90-10 rule |
C. | . on the fact that references generally tend to cluster |
D. | . all of the above |
Answer» A. . on the property of locality of reference |
133. |
Which of the following is not a weighted code? |
A. | . decimal number system |
B. | . excess 3-cod |
C. | . binary number system |
D. | . none of these |
Answer» B. . excess 3-cod |
134. |
The average time required to reach a storage location in memory and obtain its contents is called the _____. |
A. | . seek time |
B. | . turnaround time |
C. | . access time |
D. | . transfer time |
Answer» C. . access time |
135. |
(2FAOC)16 is equivalent to _____. |
A. | . (195 084)10 |
B. | . (001011111010 0000 1100)2 |
C. | . both a.and (b) |
D. | . none of these |
Answer» B. . (001011111010 0000 1100)2 |
136. |
The circuit used to store one bit of data is known as_______. |
A. | . register |
B. | . encoder |
C. | . decoder |
D. | . flip flop |
Answer» D. . flip flop |
137. |
. Computers use addressing mode techniques for ____________. |
A. | . giving programming versatility to the user by providing facilities as pointers to memory counters for loop control |
B. | . to reduce no. of bits in the field of instruction |
C. | . specifying rules for modifying or interpreting address field of the instruction |
D. | . all the above |
Answer» D. . all the above |
138. |
What characteristic of RAM memory makes it not suitable for permanent storage? |
A. | . too slow |
B. | . unreliable |
C. | . it is volatile |
D. | . too bulky |
Answer» C. . it is volatile |
139. |
rotational latency, and transfer time. Rotational latency refers to ______. |
A. | . the time its takes for the platter to make a full rotation |
B. | . the time it takes for the read-write head to move into position over the appropriate track |
C. | . the time it takes for the platter to rotate the correct sector under the head |
D. | . none of the above |
Answer» A. . the time its takes for the platter to make a full rotation |
140. |
In computers, subtraction is generally carried out by ______. |
A. | . 9’s complement |
B. | . 10’s complement |
C. | . 1’s complement |
D. | . 2’s complement |
Answer» D. . 2’s complement |
141. |
Assembly language ________. |
A. | . uses alphabetic codes in place of binary numbers used in machine language |
B. | . is the easiest language to write programs |
C. | . need not be translated into machine language |
D. | . none of these |
Answer» A. . uses alphabetic codes in place of binary numbers used in machine language |
142. |
the number of cycles required for transfer stayed the same what would the bandwidth of the bus? |
A. | . 1 megabyte/sec |
B. | . 4 megabytes/sec |
C. | . 8 megabytes/sec |
D. | . 2 megabytes/sec |
Answer» D. . 2 megabytes/sec |
143. |
Floating point representation is used to store ______. |
A. | . boolean values |
B. | . whole numbers |
C. | . real integers |
D. | . integers |
Answer» C. . real integers |
144. |
SIMD represents an organization that ______________. |
A. | . refers to a computer system capable of processing several programs at the same time. |
B. | . represents organization of single computer containing a control unit, processor unit and a memory unit. |
C. | . includes many processing units under the supervision of a common control unit |
D. | . none of the above. |
Answer» C. . includes many processing units under the supervision of a common control unit |
145. |
In Reverse Polish notation, expression A*B+C*D is written as |
A. | . ab*cd*+ |
B. | . a*bcd*+ |
C. | . ab*cd+* |
D. | . a*b*cd+ |
Answer» A. . ab*cd*+ |
146. |
Processors of all computers, whether micro, mini or mainframe must have |
A. | . alu |
B. | . primary storage |
C. | . control unit |
D. | . all of above |
Answer» B. . primary storage |
147. |
What is the control unit’s function in the CPU? |
A. | . to transfer data to primary storage |
B. | . to store program instruction |
C. | . to perform logic operations |
D. | . to decode program instruction |
Answer» C. . to perform logic operations |
148. |
What is meant by a dedicated computer? |
A. | . which is used by one person only |
B. | . which is assigned to one and only one task |
C. | . which does one kind of software |
D. | . which is meant for application software only |
Answer» D. . which is meant for application software only |
149. |
Which of the following code is used in present day computing was developed by IBM corporation? |
A. | . ascii |
B. | . hollerith code |
C. | . baudot code |
D. | . ebcdic code |
Answer» D. . ebcdic code |
150. |
When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the |
A. | . stack pointer |
B. | . accumulator |
C. | . program counter |
D. | . stack |
Answer» D. . stack |
151. |
A microprogram written as string of 0’s and 1’s is a |
A. | . symbolic microinstruction |
B. | . binary microinstruction |
C. | . symbolic microprogram |
D. | . binary microprogram |
Answer» D. . binary microprogram |
152. |
Interrupts which are initiated by an instruction are |
A. | . internal |
B. | . external |
C. | . hardware |
D. | . software |
Answer» B. . external |
153. |
Memory access in RISC architecture is limited to instructions |
A. | . call and ret |
B. | . push and pop |
C. | . sta and lda |
D. | . mov and jmp |
Answer» C. . sta and lda |
154. |
A collection of lines that connects several devices is called ………….. |
A. | . bus |
B. | . peripheral connection wires |
C. | . both a and b |
D. | . internal wires |
Answer» A. . bus |
155. |
A complete microcomputer system consist of ……….. |
A. | . microprocessor |
B. | . memory |
C. | . peripheral equipment |
D. | . all of the above |
Answer» D. . all of the above |
156. |
PC Program Counter is also called ………………. |
A. | . instruction pointer |
B. | . memory pointer |
C. | . data counter |
D. | . file pointer |
Answer» A. . instruction pointer |
157. |
In a single byte how many bits will be there? |
A. | . 8 |
B. | . 16 |
C. | . 4 |
D. | . 32 |
Answer» A. . 8 |
158. |
CPU does not perform the operation ……………… |
A. | . data transfer |
B. | . logic operation |
C. | . arithmetic operation |
D. | . all of the above |
Answer» A. . data transfer |
159. |
The access time of memory is …………… the time required for performing any single CPU operation. |
A. | . longer than |
B. | . shorter than |
C. | . negligible than |
D. | . same as |
Answer» A. . longer than |
160. |
Memory address refers to the successive memory words and the machine is called as ………… |
A. | . word addressable |
B. | . byte addressable |
C. | . bit addressable |
D. | . tera byte addressable |
Answer» A. . word addressable |
161. |
A microprogram written as string of 0’s and 1’s is a …………. |
A. | . symbolic microinstruction |
B. | . binary microinstruction |
C. | . symbolic microinstruction |
D. | . binary microprogram |
Answer» D. . binary microprogram |
162. |
A pipeline is like ……………….. |
A. | . an automobile assembly line |
B. | . house pipeline |
C. | . both a and b |
D. | . a gas line |
Answer» A. . an automobile assembly line |
163. |
Data hazards occur when …… |
A. | . greater performance loss |
B. | . pipeline changes the order of read/write access to operands |
C. | . some functional unit is not fully pipelined |
D. | . machine size is limited |
Answer» B. . pipeline changes the order of read/write access to operands |
164. |
Where does a computer add and compare data? |
A. | . hard disk |
B. | . floppy disk |
C. | . cpu chip |
D. | . memory chip |
Answer» C. . cpu chip |
165. |
the next instruction is located? |
A. | . memory address register |
B. | . memory data register |
C. | . instruction register |
D. | . program register |
Answer» D. . program register |
166. |
A complete microcomputer system consists of |
A. | . microprocessor |
B. | . memory |
C. | . peripheral equipment |
D. | . all of above |
Answer» D. . all of above |
167. |
Pipelining strategy is called implement |
A. | . instruction execution |
B. | . instruction prefetch |
C. | . instruction decoding |
D. | . instruction manipulation |
Answer» C. . instruction decoding |
168. |
A stack is |
A. | . an 8-bit register in the microprocessor |
B. | . a 16-bit register in the microprocessor |
C. | . a set of memory locations in r/wm reserved for storing information temporarily during the execution of computer |
D. | . a 16-bit memory address stored in the program counter |
Answer» A. . an 8-bit register in the microprocessor |
169. |
A stack pointer is |
A. | . a 16-bit register in the microprocessor that indicate the beginning of the stack memory. |
B. | . a register that decodes and executes 16-bit arithmetic expression. |
C. | . the first memory location where a subroutine address is stored. |
D. | . a register in which flag bits are stored |
Answer» A. . a 16-bit register in the microprocessor that indicate the beginning of the stack memory. |
170. |
The branch logic that provides decision making capabilities in the control unit is known as |
A. | . controlled transfer |
B. | . conditional transfer |
C. | . unconditional transfer |
D. | . none of above |
Answer» C. . unconditional transfer |
171. |
A time sharing system imply |
A. | . more than one processor in the system |
B. | . more than one program in memory |
C. | . more than one memory in the system |
D. | . none of above |
Answer» B. . more than one program in memory |
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