EC8552 CAO MCQ – COMPUTER ARCHITECTURE & ORGANIZATION III UNIT PROCESSOR MCQ TEST 3 October 28, 2020 admin Leave a comment EC8552 CAO MCQ – COMPUTER ARCHITECTURE & ORGANIZATION III UNIT PROCESSOR MCQ TEST 3 Welcome to your EC8552 III UNIT PROCESSOR MCQ QUESTIONS Your Name Your Email Computer has a built-in system clock that emits millions of regularly spaced electric pulses per _____ called clock cycles? second millisecond microsecond minute It takes one clock cycle to perform a basic operation? True False The operation that does not involves clock cycles is _________? Installation of a device Execute Fetch Decode The number of clock cycles per second is referred as ________? Clock speed Clock frequency Clock rate Clock timing CISC stands for ____________? Complex Information Sensed CPU Complex Instruction Set Computer Complex Intelligence Sensed CPU Complex Instruction Set CPU Which of the following processor has a fixed length of instructions? CISC RISC EPIC Multi-core Processor which is complex and expensive to produce is ________? RISC EPIC CISC Multi-core The architecture that uses a tighter coupling between the compiler and the processor is ____________? EPIC Multi-core RISC CISC MAR stands for ___________? Memory address register Main address register Main accessible register Memory accessible register A circuitry that processes that responds to and processes the basic instructions that are required to drive a computer system is ________? Memory ALU CU Processor What does the control unit generate to control other units? Transfer signals Command Signals Control signals Timing signals _________ is the branch logic that provides decision-making capabilities in the control unit? Unconditional transfer Controlled transfer Conditional transfer None of these What are encoded characters & numbers used as operands? Stored Values Information Data Input Any instruction initiates interrupt which are? hardware software internal external When does the input devices send information to the processor? When the data arrives regardless of the SIN flag When the SIN status flag is set Either of the cases Neither of the cases What do processors of all computers must have? Control unit ALU Primary Storage All of these Which of the following bus structure is used to connect I/O devices? Star bus Rambus Single bus Multiple bus Processor-I/O involves data transferring between? Computers Processor and I/O modules Registers User Processes Data register can be assigned to a? Variety of Functions Variety of Devices Variety of Programs Variety of systems The processor having Clock cycle of 0.25ns will have the clock rate of? 2GHz 3GHz 4GHz 8GHz The native MIPS has the MIPS measurement of? MIPS = Instruction count/(Execution time)10^6 MIPS = Instruction count/(Execution time)10^3 MIPS = Instruction count/Execution time MIPS = (Execution time)10^6 For two computers X and Y, if the performance of computer X is greater than the performance of computer Y, we have? PerformanceX =2PerformanceX PerformanceX =PerformanceX PerformanceX < PerformanceY PerformanceX > PerformanceY The total amount of work done during execution, in a given time is referred to as? Response time Execution time Through put Delay time To increase the performance of the computer its through put is increased by? Replacing processor with faster version Replacing input/output Replacing Operating System Replacing Cache The time between the start and the end of program execution is known as? Response time Execution time Delay time both a and b Which category of microprocessor instructions detect the status conditions in registers and accordingly exhibit the variations in program sequence on the basis of detected results? Transfer Instructions Operation Instructions Control Instructions All of the above The push and pop instructions belonging to the category of transfer instructions of microprocessor perform data transformation between _______? two registers processor register and memory stack processor register and interface register interface register and memory word Which control instruction is followed by an un-conditional branch instructions so as to branch to a single location from the double ones with respect to specified status-bit condition? jump instruction branch instruction skip instruction return- from-subroutine instructions he address of a location of the operand is calculated by adding the contents of any of the base registers, with the contents of any of index registers in? based indexed mode with displacement based indexed mode based mode indexed mode Amicroprocessorretriesinstructionsfrom? Controlmemory Cachememory Mainmemory Virtualmemory Eight of the register are known as? General‐ purposeregister Pointer or index registers Segment registers Otherregister How many bits the instruction pointer is wide? 16 bit 32 bit 64 bit 128 bit ________is the most important segment and it contains the actual assembly language instruction to be executed by the microprocessor? Data segment Code segment Stack segment Extra segment The Width of a processor’s datapath is measured in bits. Which of the following are common datapaths? 8bits 12bits 16bits 32bits The ALU of a computer normally contains a number of high speed storage element called? Semiconductormemory Registers Hard disks Magnetic disk In Microprocessor one of the operands holds a special register called Calculator Dedicated Accumulator None of these Which register is a temporary storage location? genera lpurpose register dedicated register A and B none of these _________Stores the instruction currently being executed? Instruction register Current register Both a and b None of these Built-in set of machine code instructions of computer are called? instruction set transfer of data logical operations logical set Two main types of branch instructions are? conditional branch unconditional branch logical branch both conditional & unconditional branch When an instruction is read from the memory, it is called? Memory Read cycle Fetch cycle Instruction cycle Memory write cycle Which activity does not take place during execution cycle? ALU performs the arithmetic & logical operation Effective address is calculated Next instruction is fetched Branch address is calculated & Branching conditions are checked Pseudo instructions are? Machine instructions Logical instructions Micro instructions instructions to assembler Which of the following is a Pseudo instruction? SPHL LXI NOP END The number of instructions needed to add a numbers and store the result in memory using only one address instruction is ? n n-1 n+1 Independent of n Computers use addressing mode techniques for _____________________? giving programming versatility to the user by providing facilities as pointers to memory counters for loop control to reduce no. of bits in the field of instruction specifying rules for modifying or interpreting address field of the instruction All the above _________ register keeps track of the instructions stored in program stored in memory? AR (Address Register) XR (Index Register) PC (Program Counter) AC (Accumulator) The sub-routine service procedure, is similar to that of the interrupt service routine in ________? Method of context switch Returning Process execution Both one and three option The data structure suitable for scheduling processes is _______? List Heap Queue Stack The stack frame for each sub routine is present in ______? Main memory System Heap Processor Stack None of the above Time is Up! Share the knowledge
