Computer Architecture Trivia Quiz

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Computer Architecture Trivia Quiz - Quiz

Do you know anything about computer architecture? Check out this trivia quiz and test your knowledge regarding the same. In computer engineering, computing architecture is a set of rules and methods that describe the capability, organization, and execution of computer systems. The essential principles of computer design and performance enhancement have proven useful and demonstrate how current trends in this field rely on these principles. Play this quiz to see how much you know about computer architecture.


Questions and Answers
  • 1. 

    Assembly is widely used in industry except:

    • A.

      Embedded systems

    • B.

      Real time systems.

    • C.

      Low level and direct access to hardware

    • D.

      Cracking software protections: patching, patch-loaders and emulators.

    Correct Answer
    D. Cracking software protections: patching, patch-loaders and emulators.
    Explanation
    Assembly language is commonly used in industries for tasks such as programming embedded systems, real-time systems, and low-level access to hardware. However, it is not typically used for cracking software protections like patching, patch-loaders, and emulators. These activities involve manipulating and modifying software to bypass security measures, which is not a legitimate or ethical use of assembly language in industry.

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  • 2. 

    A byte has ______ bits.

    Correct Answer
    8, eight
    Explanation
    A byte is a unit of digital information that consists of 8 bits. Each bit can represent either a 0 or a 1, and when combined, they form a byte. Therefore, a byte has 8 bits. The alternative answer, "eight," is simply another way of expressing the numerical value of 8.

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  • 3. 

    What is the LSB (least significant bit)?

    Correct Answer
    0
    Explanation
    The LSB (least significant bit) refers to the rightmost bit in a binary number. It holds the least value and has the smallest impact on the overall value of the number. In this case, the answer "0" indicates that the LSB is 0, meaning that the rightmost bit in the binary number is 0.

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  • 4. 

    What is the MSB (least significant bit)?

    Correct Answer
    7
    Explanation
    The MSB (Most Significant Bit) is the bit in a binary number that represents the largest value. In this case, the correct answer is 7, which is the largest value that can be represented by a 3-bit binary number. The MSB is the leftmost bit in a binary number and has the highest value.

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  • 5. 

    80x86 processor stores data using____________order.

    Correct Answer
    little indian
    Explanation
    The correct answer is "little indian." This refers to the byte order used by the 80x86 processor to store data. In little endian order, the least significant byte is stored first, followed by the more significant bytes. This is the opposite of big endian order, where the most significant byte is stored first.

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  • 6. 

    _________means that the low-order byte of the number is stored in the memory at the lowest address, and the high-order byte at the highest address.

    Correct Answer
    little indian
    Explanation
    Little endian is a byte order format used in computer systems where the low-order byte of a number is stored in memory at the lowest address, and the high-order byte is stored at the highest address. This means that the least significant byte comes first in memory. It is the opposite of big endian, where the most significant byte is stored first. In little endian, the individual bytes of a multi-byte value are stored in reverse order.

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  • 7. 

    CPU contains a unit called_________

    • A.

      Little Indian

    • B.

      Bus

    • C.

      Register file

    • D.

      Register

    Correct Answer
    C. Register file
    Explanation
    A CPU contains a unit called a register file. A register file is a collection of registers that are used to store and manipulate data within the CPU. These registers are small storage locations that can hold a specific amount of data, such as numbers or memory addresses. The register file allows the CPU to quickly access and modify data during its operations.

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  • 8. 

    What type of register is the following AL, BL, CL, DL, AH, BH, CH, DH?

    • A.

      8 bit

    • B.

      16 bit

    • C.

      32 bit

    • D.

      None of these

    Correct Answer
    A. 8 bit
    Explanation
    The registers AL, BL, CL, DL, AH, BH, CH, and DH are all 8-bit registers. This means that each register can store 8 bits or 1 byte of data. These registers are part of the x86 architecture and are used for various purposes such as storing data, performing arithmetic operations, and accessing memory. The fact that these registers are 8-bit is important because it determines the maximum size of data that can be stored in them.

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  • 9. 

    What type of register is the following  AX, BX, CX, DX, SP, BP, SI, Dl?

    • A.

      8 bit

    • B.

      16 bit

    • C.

      32 bit

    • D.

      None of the above

    Correct Answer
    B. 16 bit
    Explanation
    The given registers AX, BX, CX, DX, SP, BP, SI, and DL are all 16-bit registers. In computer architecture, registers are small storage areas within the CPU that hold data temporarily. The number of bits in a register determines the range of values it can hold. In this case, since the registers are 16-bit, they can store values ranging from 0 to 65,535. Hence, the correct answer is 16 bit.

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  • 10. 

    What type of register is the following  EAX, EBX, ECX, EDX, ESP, EBP, ESI, EDI (Accumulator, Base, Counter, Data, Stack pointer, Base pointer, Source index, Destination Index)?

    • A.

      8 bit

    • B.

      16 bit

    • C.

      32 bit

    • D.

      None of the above

    Correct Answer
    C. 32 bit
    Explanation
    The given registers EAX, EBX, ECX, EDX, ESP, EBP, ESI, and EDI are all 32-bit registers. The "32 bit" option correctly identifies the type of register they are.

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  • 11. 

    Contains the offset (address) of the next instruction that is going to be executed. Exists only during run time. The software changes it by performing an unconditional jump, conditional jump, procedure call, return.

    • A.

      EIP

    • B.

      Segment Registers

    • C.

      Registers

    • D.

      Little Indian

    Correct Answer
    A. EIP
    Explanation
    EIP stands for Extended Instruction Pointer and it contains the offset (address) of the next instruction that is going to be executed. It exists only during run time and is changed by the software when performing operations like unconditional jump, conditional jump, procedure call, and return.

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  • 12. 

    Contains the next free address on a stack.

    • A.

      ESP - stack pointer

    • B.

      Instruction Pointer

    • C.

      Segment Registers

    • D.

      Registers

    Correct Answer
    A. ESP - stack pointer
    Explanation
    ESP is the stack pointer in a computer's architecture. It points to the next free address on the stack. The stack is a data structure used for storing temporary data and return addresses during program execution. As the program pushes data onto the stack, the stack pointer is incremented to point to the next available memory location. Therefore, ESP being the stack pointer is the correct answer as it accurately describes its role in managing the stack.

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  • 13. 

    Uses as the line continuation character

    • A.

      Comma

    • B.

      Semicolon

    • C.

      Backslash

    • D.

      Full stop

    Correct Answer
    C. Backslash
    Explanation
    The backslash (\) is used as the line continuation character in programming languages. It allows a statement to be continued on the next line, making the code more readable and organized. By using the backslash, the code can be broken into multiple lines without affecting its functionality. This is especially useful when writing long statements or when dealing with complex code structures.

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  • 14. 

    What is the left operand?

    • A.

      Operand

    • B.

      Target operand

    • C.

      Source operand

    • D.

      All of these

    Correct Answer
    B. Target operand
    Explanation
    The left operand refers to the operand that is located on the left side of an operator in an expression. In this case, the target operand is the correct answer because it is the operand that is being targeted or modified by the operator. The source operand, on the other hand, is the operand that provides the value or data to be used in the operation. Therefore, the left operand is specifically the target operand in this context.

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  • 15. 

    What is the right operand?

    • A.

      Operand

    • B.

      Target operand

    • C.

      Source operand

    • D.

      All of these

    Correct Answer
    C. Source operand
    Explanation
    The right operand refers to the operand that is on the right side of an operator in an expression. In this case, the correct answer is "Source operand" because it specifically refers to the operand that is the source of data in an expression. The other options, "Operand" and "Target operand," are more general terms that do not specifically refer to the right operand. Therefore, the correct answer is "Source operand."

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  • 16. 

    There are 3 kinds of operands exists except one.

    • A.

      Immediate

    • B.

      Register

    • C.

      Memory allocation

    • D.

      Operators

    Correct Answer
    D. Operators
  • 17. 

    mov r/m8,reg8  what does it mean?

    • A.

      Copies content of 8-bit register source to 8-bit register or 8-bit memory unit destination

    • B.

      Copies content of 8-bit register destination to 8-bit register or 8-bit memory unit source

    • C.

      Copies content of 8-bit register (destination) to 8-bit register or 9-bit memory unit (source)

    • D.

      Copies content of 16-bit register destination to 8-bit register or 8-bit memory unit source

    Correct Answer
    A. Copies content of 8-bit register source to 8-bit register or 8-bit memory unit destination
    Explanation
    The instruction "mov r/m8,reg8" means that it copies the content of an 8-bit register (source) to either an 8-bit register or an 8-bit memory unit (destination).

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  • 18. 

    Add AX, BX means

    • A.

      Adds its two operands together, and leaves the result in its destination (first) operand

    • B.

      Adds its two operands together, and calculate the result in its destination (first) operand

    • C.

      Adds its two operands together, plus the value of the carry flag, and leaves the result in its destination (first) operand

    • D.

      None of the above

    Correct Answer
    A. Adds its two operands together, and leaves the result in its destination (first) operand
    Explanation
    The correct answer is "adds its two operands together, and leaves the result in its destination (first) operand." This means that when the instruction "add AX, BX" is executed, the values of AX and BX are added together, and the result is stored in AX.

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  • 19. 

    inc r/m16 means

    • A.

      Adds 1 to its operand

    • B.

      Add twice to its operand

    • C.

      Add 0 to its operand

    • D.

      Add 1 twice

    Correct Answer
    A. Adds 1 to its operand
    Explanation
    The instruction "inc r/m16" is used to increment the value of the operand by 1.

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  • 20. 

    ec reg16 means

    • A.

      Subtracts twice from its operand

    • B.

      Subtracts 1 from its operand

    • C.

      Subtracts 0 value from its operand

    • D.

      Subtracts 2 value from its operand

    Correct Answer
    B. Subtracts 1 from its operand
    Explanation
    The statement "ec reg16 means subtracts 1 from its operand" means that the instruction "ec reg16" performs a subtraction operation on the value stored in the register reg16 by subtracting 1 from it.

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  • 21. 

    Or r/m32,imm32 means

    • A.

      Each bit of the result is 1 if and only if at least one of the corresponding bits of the two inputs was 1; stores the result in the destination (first) operan

    • B.

      Each bit of the result is 1 if and only if the corresponding bits of the two inputs were both 1; stores the result in the destination (first) operand

    • C.

      Both A and B

    • D.

      None of the above

    Correct Answer
    A. Each bit of the result is 1 if and only if at least one of the corresponding bits of the two inputs was 1; stores the result in the destination (first) operan
    Explanation
    The correct answer is "each bit of the result is 1 if and only if at least one of the corresponding bits of the two inputs was 1; stores the result in the destination (first) operand". This means that the logical OR operation is performed on each bit of the two inputs, and if either of the bits is 1, the corresponding bit in the result will also be 1. The result is then stored in the destination operand.

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  • Current Version
  • Aug 28, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 22, 2012
    Quiz Created by
    Khyrix1
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