EC8552 CAO MCQ – COMPUTER ARCHITECTURE & ORGANIZATION III UNIT PROCESSOR MCQ TEST 3 October 28, 2020 admin 2 Comments 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?secondmillisecondmicrosecondminute It takes one clock cycle to perform a basic operation?TrueFalse The operation that does not involves clock cycles is _________?Installation of a deviceExecuteFetchDecode The number of clock cycles per second is referred as ________?Clock speedClock frequencyClock rateClock timing CISC stands for ____________?Complex Information Sensed CPUComplex Instruction Set ComputerComplex Intelligence Sensed CPUComplex Instruction Set CPU Which of the following processor has a fixed length of instructions?CISCRISCEPICMulti-core Processor which is complex and expensive to produce is ________?RISCEPICCISCMulti-core The architecture that uses a tighter coupling between the compiler and the processor is ____________?EPICMulti-coreRISCCISC MAR stands for ___________?Memory address registerMain address registerMain accessible registerMemory accessible register A circuitry that processes that responds to and processes the basic instructions that are required to drive a computer system is ________?MemoryALUCUProcessor What does the control unit generate to control other units?Transfer signalsCommand SignalsControl signalsTiming signals _________ is the branch logic that provides decision-making capabilities in the control unit?Unconditional transferControlled transferConditional transferNone of these What are encoded characters & numbers used as operands?Stored ValuesInformationDataInput Any instruction initiates interrupt which are?hardwaresoftwareinternalexternal When does the input devices send information to the processor?When the data arrives regardless of the SIN flagWhen the SIN status flag is setEither of the casesNeither of the cases What do processors of all computers must have?Control unitALUPrimary StorageAll of these Which of the following bus structure is used to connect I/O devices?Star busRambusSingle busMultiple bus Processor-I/O involves data transferring between?ComputersProcessor and I/O modulesRegistersUser Processes Data register can be assigned to a?Variety of FunctionsVariety of DevicesVariety of ProgramsVariety of systems The processor having Clock cycle of 0.25ns will have the clock rate of?2GHz3GHz4GHz8GHz The native MIPS has the MIPS measurement of?MIPS = Instruction count/(Execution time)10^6MIPS = Instruction count/(Execution time)10^3MIPS = Instruction count/Execution timeMIPS = (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 =2PerformanceXPerformanceX =PerformanceXPerformanceX < PerformanceYPerformanceX > PerformanceY The total amount of work done during execution, in a given time is referred to as?Response timeExecution timeThrough putDelay time To increase the performance of the computer its through put is increased by?Replacing processor with faster versionReplacing input/outputReplacing Operating SystemReplacing Cache The time between the start and the end of program execution is known as?Response timeExecution timeDelay timeboth 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 InstructionsOperation InstructionsControl InstructionsAll of the above The push and pop instructions belonging to the category of transfer instructions of microprocessor perform data transformation between _______?two registersprocessor register and memory stackprocessor register and interface registerinterface 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 instructionbranch instructionskip instructionreturn- 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 displacementbased indexed modebased modeindexed mode Amicroprocessorretriesinstructionsfrom?ControlmemoryCachememoryMainmemoryVirtualmemory Eight of the register are known as?General‐ purposeregisterPointer or index registersSegment registersOtherregister How many bits the instruction pointer is wide?16 bit32 bit64 bit128 bit ________is the most important segment and it contains the actual assembly language instruction to be executed by the microprocessor?Data segmentCode segmentStack segmentExtra segment The Width of a processor’s datapath is measured in bits. Which of the following are common datapaths?8bits12bits16bits32bits The ALU of a computer normally contains a number of high speed storage element called?SemiconductormemoryRegistersHard disksMagnetic disk In Microprocessor one of the operands holds a special register calledCalculatorDedicatedAccumulatorNone of these Which register is a temporary storage location?genera lpurpose registerdedicated registerA and Bnone of these _________Stores the instruction currently being executed?Instruction registerCurrent registerBoth a and bNone of these Built-in set of machine code instructions of computer are called?instruction settransfer of datalogical operationslogical set Two main types of branch instructions are?conditional branchunconditional branchlogical branchboth conditional & unconditional branch When an instruction is read from the memory, it is called?Memory Read cycleFetch cycleInstruction cycleMemory write cycle Which activity does not take place during execution cycle?ALU performs the arithmetic & logical operationEffective address is calculatedNext instruction is fetchedBranch address is calculated & Branching conditions are checked Pseudo instructions are?Machine instructionsLogical instructionsMicro instructionsinstructions to assembler Which of the following is a Pseudo instruction?SPHLLXINOPEND The number of instructions needed to add a numbers and store the result in memory using only one address instruction is ?nn-1n+1Independent of n Computers use addressing mode techniques for _____________________?giving programming versatility to the user by providing facilities as pointers to memory counters for loop controlto reduce no. of bits in the field of instructionspecifying rules for modifying or interpreting address field of the instructionAll 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 switchReturningProcess executionBoth one and three option The data structure suitable for scheduling processes is _______?ListHeapQueueStack The stack frame for each sub routine is present in ______?Main memorySystem HeapProcessor StackNone of the above Time is Up! 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