DOC-20250218-WA0015.

Computer Architecture MCQ 4th semester CS/IT Niharika Mohanty 1) Who developed the basic architecture of computer? a)Blaise Pascal b) Charles Babbage c) John Von Neumann d) None of the above 2) Which of the fo...

Computer Architecture MCQ 4th semester CS/IT Niharika Mohanty 1) Who developed the basic architecture of computer? a)Blaise Pascal b) Charles Babbage c) John Von Neumann d) None of the above 2) Which of the following is not considered as a peripheral device? a) CPU b) Keyboard c) Monitor d) All of the above 3) Which of the following computer memory is fastest? a) Register b) Hard disk c) RAM d) None of the above 4) Which of the following operations is/are performed by the ALU? a) Data manipulation b) Exponential c) Square root d) All of the above 5) Which of the following format is used to store data? a) Decimal b) Octal c) BCD d) Hexadecimal 6) Which of the following memory of the computer is used to speed up the computer processing? a) Cache memory b) RAM c) ROM d) none of the above 8) Computer address bus is - a) Multidirectional b) Bidirectional c) Unidirectional d).None of the above 9) Which of the following circuit is used to store one bit of data? a) Flip Flop b) Decoder c) Encoder d) Register 10) Which of the following is a way in which the components of a computer are connected to each other? a) Computer parts b) Computer architecture c) Computer hardware d) None of the above 11) The address in the main memory is known as – a) Logical address b) Physical address c) Memory address d) None of the above 12) Subtraction in computers is carried out by – a) 1's complement b) 2's complement c) 3's complement d) 9's complement 13) Which of the following memory unit communicates directly with the CPU? a. Auxiliary memory b. Main memory c) Secondary memory d.) None of the above 14) The collection of 8-bits is called as -. a) Byte b) Nibble c) Word d) Record 15) Which of the following is a group of bits that tells the computer to perform a particular operation? a) Accumulator b) Register c) Instruction code d)None of the above 16) Where is the document temporarily stored during working on a document on PC? a)ROM b) CPU c) RAM d) Flash memory 17) Where is the decoded instruction stored? a) Registers b) MDR c) PC d) IR 18) The status bit is also called as – a) Unsigned bit b) Signed bit c) Flag bit d.) None of the above 19) Which of the following register can interact with the secondary storage? a) PC b) MAR c) MDR d) IR 20) Which of the following is not considered as a peripheral device? a) CPU b) Keyboard c) Monitor d) All of the above 21) Which of the following is an essential data transfer technique? a) MMA b) DMA c) CAD d) CAM 22) RISC stands for – a) Reduce Instruction Set Computer b) Risk Instruction Sequential Compilation c) Risk Instruction Source Compiler d) None of the above 23) In which of the following term the performance of cache memory is measured? a) Chat ratio b) Hit ratio c) Copy ratio d)Data ratio 24) Which of the following is the function of the control unit in the CPU? a) It stores program instruction b) It decodes program instruction c)It performs logic operations d) None of the above 25) Which of the following computer register collects the result of computation? a) Accumulator b) Instruction Pointer c) Storage register d) None of the above 26) Which of the following building block can be used to implement any combinational logic circuit? a) AND b) OR c) NAND d) None of the above 27) What does a computer bus line consists of? a) Set of parallel lines b) Accumulators c) Registers d) None of the above 28) Which of the following is performed by half adder? a)Binary addition operation for 2 decimal inputs b) Binary addition operation for 2 binary inputs c) Decimal addition operation for 2 decimal inputs d) Binary addition operation for 2 binary inputs 29) Circuits that can hold their state as long as power is applied is _______ a) Dynamic memory b) Static memory c) Register d) Cache 30) The minimum time delay between two successive memory read operations is ______ a)Cycle time b) Latency c) Delay d) None of the mentioned 31) The drawback of building a large memory with DRAM is ______________ a) The large cost factor b) The inefficient memory organization c) The Slow speed of operation d) All of the mentioned 32) The fastest data access is provided using _______ a) Caches b) DRAM’s c) SRAM’s d) Registers 33) The next level of memory hierarchy after the L2 cache is _______ a) Secondary storage b) TLB c) Main memory d) Register 34) The memory blocks are mapped on to the cache with the help of ______ a) Hash functions b) Vectors c) Mapping functions d) None of the mentioned 35) During a write operation if the required block is not present in the cache then ______ occurs. a) Write latency b) Write hi c) Write delay d) Write miss 36)The method of mapping the consecutive memory blocks to consecutive cache blocks is called ______ a) Set associative b) Associative c) Direct d) Indirect 37) In ________ protocol the information is directly written into the main memory. a) Write through b) Write back c) Write first d) None of the mentioned 38) The benefit of using this approach is ________ a ) It is cost effective b) It is highly efficient c) It is very reliable d) It increases the speed of operation 39) The transfer of large chunks of data with the involvement of the processor is done by _______ a) DMA controller b) Arbitrator c) User system programs d) None of the mentioned 40) The unit which acts as an intermediate agent between memory and backing store to reduce process time is ___________ a) TLB’s b) Registers c) Page tables d) Cache 41). The situation wherein the data of operands are not available is called ______ a) Data hazard b) Stock c) Deadlock d) Structural hazard 42) The fetch and execution cycles are interleaved with the help of ________ a) Modification in processor architecture b) Clock c) Special unit d) Control unit 43) The algorithm which replaces the block which has not been referenced for a while is called _____ a) LRU b) ORF c) Direct d) Both LRU and ORF 44) The algorithm which removes the recently used page first is ________ a) LRU b) MRU c) OFM d) None of the mentioned 45) In LRU, the referenced blocks counter is set to’0′ and that of the previous blocks are incremented by one and others remain same, in the case of ______ a) Hit b) Miss c) Delay d) None of the mentioned 46) In the case of, Zero-address instruction method the operands are stored in _____ a) Registers b) Accumulators c) Push down stack d) Cache 47) The addressing mode which makes use of in-direction pointers is ______ a) Indirect addressing mode b) Index addressing mode c) Relative addressing mode d) offset addressing mode 48) The addressing mode/s, which uses the PC instead of a general purpose register is ______ a) Indexed with offset b) Relative c) Direct d) Both Indexed with offset and direct 49) The addressing mode, where you directly specify the operand value is _______ a) Immediate b) Direct c) Definite d) Relative 50)The effective address of the following instruction is MUL 5(R1,R2). a) 5+R1+R2 b) 5+(R1*R2) c) 5+[R1]+[R2] d) 5*([R1]+[R2]) 51) In memory-mapped I/O ____________ a) The I/O devices and the memory share the same address space b) The I/O devices have a separate address space c) The memory and I/O devices have an associated address space d) A part of the memory is specifically set aside for the I/O operation 52) The usual BUS structure used to connect the I/O devices is ___________ a) Star BUS structure ` b) Multiple BUS structure c) Single BUS structure d) Node to Node BUS structure 53) The system is notified of a read or write operation by ___________ a) Appending an extra bit of the address b) Enabling the read or write bits of the devices c) Raising an appropriate interrupt signal d) Sending a special signal along the BUS 54) The method of accessing the I/O devices by repeatedly checking the status flags is ___________ a) Program-controlled I/ b) Memory-mapped I/O c) I/O mapped d) None of the mentioned 55) The method of synchronizing the processor with the I/O device in which the device sends a signal when it is ready is? a) Exceptions b) Signal handling c) Interrupts d) DMA 56) The method which offers higher speeds of I/O transfers is ___________ a) interrupts b) Memory mapping c) Program-controlled I/O d) DMA 57) In IEEE 32-bit representations, the mantissa of the fraction is said to occupy ______ bits. a) 24 b) 23 c) 20 d) 16 58) The sign followed by the string of digits is called as ______ a) Significant b) Determinant c) Mantissa d) Exponent 59)If the decimal point is placed to the right of the first significant digit, then the number is called ________ a) Orthogonal b) Normalized c) Determinate d) None of the mentioned 60) In double precision format, the size of the mantissa is ______ a) 32 bit b) 52 bit c) 64 bit d) 72 bit 61) We make use of ______ circuits to implement multiplication. a) Flip flops b) Combinatorial c) Fast adders d) None of the mentioned 62) The multiplier is stored in ______ a) PC Register b) Shift register c) Cache d) None of the mentioned 63) The ______ is used to coordinate the operation of the multiplier. a) Controller b) Coordinator c) Control sequencer d) None of the mentioned 64)The multiplicand and the control signals are passed through to the n-bit adder via _____ a) MUX b) DEMUX c) Encoder d) Decoder The bits 1 & 1 are recorded as _______ in bit-pair recording. a) -1 b) 0 c) +1 d) both -1 and 0 65) CSA stands for? a) Computer Speed Addition b) Carry Save Addition c) Computer Service Architecture d) None of the mentioned 66) The computer architecture aimed at reducing the time of execution of instructions is ________ a) CISC b) RISC c) ISA d) ANNA 67) Both the CISC and RISC architectures have been developed to reduce the ______ a) Cost b) Time delay c) Semantic gap d) All of the mentioned 68) Which of the architecture is power efficient? a) CISC b) RISC c) ISA d) IANA 69) The ROM chips are mainly used to store _______ a) System files b) Root directories c) Boot files d) Driver files 70) The disadvantage of the EPROM chip is _______ a) The high cost factor b) The low efficiency c) The low speed of operation d) The need to remove the chip physically to reprogram it 71) In micro-programmed approach, the signals are generated by ______ a) Machine instructions b) System programs c) Utility tools d) None of the mentioned 72) A sequence of control words corresponding to a control sequence is called _______ a) Micro routine b) Micro function c) Micro procedure d) None of the mentioned 73) Individual control words of the micro routine are called as ______ a) Micro task b) Micro operation c) Micro instruction d) Micro command 74) Every time a new instruction is loaded into IR the output of ________ is loaded into UPC. a) Starting address generator b) Loader c) Linker d) Clock 75) The special memory used to store the micro routines of a computer is ________ a) Control table b) Control store c) Control mart d) Control shop 76) The small extremely fast RAM is called as ________ a) Cache b) Heaps c) Accumulators d) Stacks 77) To organize large memory chips we make use of ______ a) Integrated chips b) Upgraded hardware c) Memory modules d) None of the mentioned 78) The chip can be disabled or cut off from an external connection using ______ a) Chip select b) LOCK c) ACPT d) RESET 79) The periods of time when the unit is idle is called as ________ a) Stalls b) Bubbles c) Hazards d) Both Stalls and Bubbles 80) The contention for the usage of a hardware device is called ______ a) Structural hazard b) Stalk c) Deadlock d) None of the mentioned 81) The stalling of the processor due to the unavailability of the instructions is called as ___________ a) Control hazard b) structural hazard c) Input hazard d) None of the mentioned 82) When using the Big Endian assignment to store a number, the sign bit of the number is stored in _____ a) The higher order byte of the word b) The lower order byte of the word c) Can’t say d) None of the mentioned 83) To get the physical address from the logical address generated by CPU we use ____________ a) MAR b) MMU c) Overlays d) TLB 84) The smallest entity of memory is called _______ a) Cell b) Block c) Instance d) Unit 85) The collection of the above mentioned entities where data is stored is called ______ a) Block b) Set c) Word d) Byte 86) The type of memory assignment used in Intel processors is _____ a) Little Endian b) Big Endian c) Medium Endian d) None of the mentioned 87) RTN stands for ___________ a) Register Transfer Notation b) Register Transmission Notation c) Regular Transmission Notation d) Regular Transfer Notation 88) The two phases of executing an instruction are __________ a) Instruction decoding and storage b) Instruction fetch and instruction execution c) Instruction execution and storage d) Instruction fetch and Instruction processing 89) When using Branching, the usual sequencing of the PC is altered. A new instruction is loaded which is called as ______ a) Branch target b) Loop target c) Forward target d) Jump instruction 90) The condition flag Z is set to 1 to indicate _______ a) The operation has resulted in an error b) The operation requires an interrupt call c) The result is zero d) There is no empty register available 91) The stack frame for each subroutine is present in ______ a) Main memory b) System Heap c) Processor Stack d) None of the mentioned 92) The main virtue for using single Bus structure is ____________ a) Fast data transfers b) Cost effective connectivity and speed c) Cost effective connectivity and ease of attaching peripheral devices d) None of the mention 93) ______ are used to overcome the difference in data transfer speeds of various devices. a) Speed enhancing circuitory b) Bridge circuits c) Multiple Buses d) Buffer registers 94) The bus used to connect the monitor to the CPU is ______ a) PCI bus b) SCSI bus c) Memory bus d) Rambus 95) In multiple Bus organization, the registers are collectively placed and referred as ______ a) Set registers b) Register file c) Register Block d) Map registers 96) The main advantage of multiple bus organization over a single bus is _____ a) Reduction in the number of cycles for execution b) Increase in size of the registers c) Better Connectivity d) None of the mentioned 97) Write through technique is used in which memory for updating the data a) Virtual Memory b) Auxiliary memory c) Main memory d) Cache memory 98) The main memory in a personal computer is made of a) Static RAM b) Both c and d c) Cache memory d) Dynamic RAM 99) The operation executed on data stored in registers is called a) Micro operation b) Bit operation c) macro operation d) Byte operation 100) The time interval between adjacent bits is called the a) Word time b) Turnaround time c) Bit time d) slice time