Embedded Systems MCQs Quiz Multiple Choice Questions & Answers Page 3

101. Which of the following processors execute its instruction in a single cycle?

1. 8086
2. 8088
3. 8087
4. MIPS R2000

102. Which of the following processors has CISC architecture?

1. AVR
2. Atmel
3. Blackfin
4. Zilog Z80

103. Which of the following processors uses Harvard architecture?

1. TEXAS TMS320
2. 80386
3. 80286
4. 8086

104. Which of the following provides a low-level method of debugging software?

1. high-level simulator
2. low-level simulator
3. onboard debugger
4. cpu simulator

105. Which of the following provides stability to the multitasking system?

1. memory
2. DRAM
3. SRAM
4. Memory partitioning

106. Which of the following provides time period for the context switch?

1. timer
2. counter
3. time slice
4. time machine

107. Which of the following registers offers high impedance?

1. data register
2. data direction register
3. individual control bit
4. data register and data direction register

108. Which of the following signals are active low in the 8250 UART?

1. BAUDOUT
2. DDIS
3. INTR4MR

109. Which of the following statements are true for von Neumann architecture?

1. shared bus between the program memory and data memory
2. separate bus between the program memory and data memory
3. external bus for program memory and data memory
4. external bus for data memory only

110. Which of the following stores all the task information that the system requires?

1. task access block
2. register
3. accumulator
4. task control block

111. Which of the following supports seven interrupt priority level?

1. kernel
2. operating system
3. VMEbus
4. data bus

112. Which of the following technique is used by the UNIX operating system?

1. logical address memory
2. physical address memory
3. virtual memory technique
4. translational address

113. Which of the following uses its own address space?

1. thread
2. process
3. task
4. kernel

114. Which of the following works by dividing the processors time?

1. single task operating system
2. multitask operating system
3. kernel
4. applications

115. Which of the processor has an internal coprocessor?

1. 8087
2. 80287
3. 80387
4. 80486DX

116. Which of the signal can control bus arbitration logic in 8250?

1. MR
2. DDIS
3. INTR
4. RCLK

117. Which of the signal is set to one, if no data is transmitted?

1. READY
2. START
3. STOP
4. TXD

118. Which one is the floating point coprocessor of 80286?

1. 8087
2. 80187
3. 80287
4. 80387

119. Which signal is used to select the slave in the serial peripheral interfacing?

1. slave select
2. master select
3. interrupt
4. clock signal

120. Which term is used to encompass more than a simple context switch?

1. process
2. single thread system
3. thread
4. multithread

121. Who coined the term RISC?

1. David Patterson
2. von Neumann
3. Michael J Flynn
4. Harvard

122. Who has invented flash memory?

1. Dr.FujioMasuoka
2. John Ellis
3. Josh Fisher
4. John Ruttenberg

123. Who invented TriMedia processor?

1. Intel
2. IBM
3. Apple
4. NXP Semiconductor

124. Which of the following is a coprocessor of 80386?

1. 80387
2. 8087
3. 8089
4. 8088

125. How are negative numbers stored in a coprocessor?

1. 1s complement
2. 2s complement
3. decimal
4. gray

126. How buffers are enabled in the parallel ports?

1. by the data register
2. by data direction register
3. by individual control register
4. by data and individual control register

127. How is baud rate supplied?

1. baud rate voltage
2. external timer
3. peripheral
4. internal timer

128. How is data detected in a UART?

1. counter
2. timer
3. clock
4. first bit

129. How is memory accessed in RISC architecture?

1. load and store instruction
2. opcode instruction
3. memory instruction
4. bus instruction

130. How many areas does the serial interface have?

1. 1
2. 3
3. 2
4. 4

131. How many bits are used for storing signed integers?

1. 2
2. 4
3. 8
4. 16

132. How many categories are there for the low-level simulation?

1. 2
2. 3
3. 4
4. 5

133. How many main signals are used with memory chips?

1. 2
2. 4
3. 6
4. 8

134. How many numbers of ways are possible for allocating the memory to the modular blocks?

1. 1
2. 2
3. 3
4. 4

135. How many pins does 8087 have?

1. 40 pin DIP
2. 20 pin DIP
3. 40 pins
4. 20 pins

136. How many registers are there to control the parallel port in the basic form?

1. 1
2. 3
3. 2
4. 5