Computer Organization and Assembly Language
Question Bank
Course Introduction
Computer Organization and Assembly Language introduces the fundamental concepts of computer architecture, detailing how hardware and software interact at the machine level. The course covers topics such as data representation, digital logic, CPU structure, memory hierarchy, input/output mechanisms, and instruction set architectures. Students learn the basics of assembly language programming, gaining hands-on experience with low-level code to manipulate hardware directly. By exploring how computers execute instructions and manage resources, learners develop a deeper understanding of system performance, optimization, and the relationship between high-level code and hardware operations.
Recommended Textbook
Assembly Language for x86 Processors 7th Edition by Kip R. Irvine
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17 Chapters
255 Verified Questions
255 Flashcards
Source URL: https://quizplus.com/study-set/3977 Page 2
Chapter 1: Basic Concepts Assessment
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14 Verified Questions
14 Flashcards
Source URL: https://quizplus.com/quiz/79902
Sample Questions
Q1) The sum of all powers of 2 from 20 to 28 is 511.
A)True
B)False
Answer: True
Q2) The sum of the binary integers 01101101 and 00111011 is 10101001.
A)True
B)False
Answer: False
Q3) To translate an unsigned decimal integer into binary,repeatedly divide the integer by 2,saving each remainder as a binary digit.
A)True
B)False
Answer: True
Q4) In any numbering system,the radix specifies the range of alphanumeric digits that can be assigned to a single digit position.
A)True
B)False
Answer: True
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Page 3
Chapter 2: X86 Processor Architecture Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79901
Sample Questions
Q1) The Zero flag is clear when the result of an arithmetic operation is zero.
A)True
B)False
Answer: False
Q2) In Real-address mode,multiple programs can run at the same time,but they can only address physical memory.
A)True
B)False
Answer: False
Q3) When running in 64-bit mode,only the lowest 48 bits of address operands are used.
A)True
B)False
Answer: True
Q4) Requests from hardware devices are called "interrrupts".
A)True
B)False
Answer: True
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4
Chapter 3: Assembly Language
Fundamentals-assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79900
Sample Questions
Q1) In the following statement,EAX is called the source operand: mov EBX,EAX
A)True
B)False
Answer: True
Q2) The following is a valid data definition statement: varX WORD 100h,65536
A)True
B)False Answer: False
Q3) An object file is commonly read as input by the linker. A)True
B)False Answer: False
Q4) A code name must end with a colon (:).
A)True
B)False
Answer: True
Page 5
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Chapter 4: Data Transfers,addressing,and
Arithmetic-assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79899
Sample Questions
Q1) The SUB instruction requires the source operand to be no larger than the destination operand.
A)True
B)False
Q2) The following instruction will produce 1FFFFFFCh in EDX: movsx edx,-4
A)True
B)False
Q3) The MOV instruction permits a move between two 8-bit memory operands,as long as one operand uses the BYTE PTR operator.
A)True
B)False
Q4) When you move a 16-bit constant or an 8-bit constant into a 64-bit register,the upper bits of the destination operand are cleared.
A)True
B)False
Q5) The MOVSX instruction can use a variable as the source operand.
A)True
B)False
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Chapter 5: Procedures-assessment
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16 Verified Questions
16 Flashcards
Source URL: https://quizplus.com/quiz/79898
Sample Questions
Q1) The runtime stack is the same as the stack abstract data type (ADT).
A)True
B)False
Q2) The PUSH instruction copies a value from the stack to an operand before decrementing the stack pointer.
A)True
B)False
Q3) In 32-bit mode,immediate values pushed on the stack are always 32 bits long.
A)True
B)False
Q4) The runtime stack is supported by the computer's processor.
A)True
B)False
Q5) By default,labels are visible only within the procedure in which they are declared.
A)True
B)False
Q6) In a stack,the first value pushed on a stack is the last one to be removed.
A)True
B)False
Page 7
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Chapter 6: Conditional Processing Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79897
Sample Questions
Q1) The Parity flag indicates whether the lowest byte of a destination operand has an even number of 1 bits.
A)True
B)False
Q2) ANDing an operand with 1 sets the zero flag if the operand was originally an even number.
A)True
B)False
Q3) The OR instruction can be used to find the intersection of two bit-mapped sets. A)True
B)False
Q4) The XOR instruction inverts each bit in a destination operand. A)True B)False
Q5) The JO instruction is used after an operation involving signed integers. A)True B)False
Q6) XORing an operand with 1 always causes the Zero flag to be set. A)True B)False
Page 8
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Chapter 7: Integer Arithmetic Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79896
Sample Questions
Q1) The SAR and SHR instructions perform the same operation.
A)True
B)False
Q2) The destination operand of the IMUL instruction may be a memory operand.
A)True
B)False
Q3) RDX will equal 1 after the following instructions have executed.
mov rax,0FFFF0000FFFF0000h
mov rbx,2
mul rbx
A)True
B)False
Q4) When the MUL BX instruction executes,the 32-bit product ends into the EAX register.
A)True
B)False
Q5) The ROR instruction is only suitable for signed integers.
A)True
B)False
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Chapter 8: Advanced Procedures Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79895
Sample Questions
Q1) The CALL instruction can only have a single operand.
A)True
B)False
Q2) The C calling convention requires the calling program to reset the stack pointer after the subroutine has returned.
A)True
B)False
Q3) In assembly language,a variable declared using the LOCAL directive in one procedure can be read by code in another procedure.
A)True
B)False
Q4) Local variables are stored on the runtime stack,at a higher address than the stack pointer.
A)True
B)False
Q5) The following is a valid LOCAL declaration: LOCAL LastName:BYTE(25)
A)True
B)False
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Chapter 9: Strings and Arrays Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79894
Sample Questions
Q1) The Str_trim procedure has a second parameter that holds the character to be trimmed from the end of the string.
A)True
B)False
Q2) When calling Str_compare in the Irvine32 library,you can pass arguments to it in 32-bit registers.
A)True
B)False
Q3) array[EDX+ESI] is an example of a base-index-displacement operand.
A)True
B)False
Q4) On the first pass through an array of N items,the inner loop of a bubble sort executes N - 1 times.
A)True
B)False
Q5) The REPNE prefix repeats an instruction while the Zero flag is set,and ECX is greater than zero.
A)True
B)False
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Chapter 10: Structures and Macros Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79893
Sample Questions
Q1) The following macro moves any 32-bit memory operand to any other 32-bit memory operand:
mMove32 MACRO destination,source push eax
mov eax,source mov destination,eax pop eax
ENDM
A)True
B)False
Q2) The following statements create five uninitialized DWORD variables in which each variable name is a member of the following list: monday,tuesday,wednesday,thursday,friday: FOR varName,<monday,tuesday,wednesday,thursday,friday> DWORD varName <> ENDM
A)True B)False
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12
Chapter 11: Ms-Windows Programming Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79892
Sample Questions
Q1) When requesting single-character input,you must call SetConsoleMode to alter the console flag settings.
A)True
B)False
Q2) If you want to open an existing file,you must call the Win32 OpenFile function.
A)True
B)False
Q3) The SetConsoleTextAttribute function can be used to change the color of text that has already been written to the screen buffer.
A)True
B)False
Q4) The CREATE_NEW constant can be passed to the creationDisposition parameter in the CreateFile function.
A)True
B)False
Q5) The SetConsoleWindowInfo function lets you control the size and position of the console window.
A)True
B)False
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Chapter 12: Floating-Point Processing and Instruction
Encoding Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79891
Sample Questions
Q1) There are two types of NaNs,one of which is named Quiet NaN.
A)True
B)False
Q2) The first byte of every x86 machine instruction is the ModR/M byte.
A)True
B)False
Q3) In a single-precision real,the exponent field has a bias of 128.
A)True
B)False
Q4) After calling the FCOM instruction to compare two floating-point values,you must execute the FNSTSW instruction,followed by FPOP to prepare the CPU to recognize branching instructions such as JG and JL.
A)True
B)False
Q5) In a single-precision real number,the exponent uses 7 bits. A)True
B)False
Q6) A double extended-precision real occupies 60 of storage.
A)True
B)False
Page 14
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Page 15
Chapter 13: High-Level Language Interface-- Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79890
Sample Questions
Q1) Although STDCALL is compatible with the Win32 API, it does not match the calling convention used by C programs.
A)True
B)False
Q2) When a C++ functions is called,floating-point values inside the function are usually pushed on the processor's floating-point stack before returning to the function's caller.
A)True
B)False
Q3) The EVEN and ALIGN directives can be used in Visual C++ inline assembly code.
A)True
B)False
Q4) C language programs automatically convert external identifiers to all uppercase letters.
A)True
B)False
Q5) In Visual C++,the PTR directive cannot be used in inline assembly code.
A)True B)False
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Chapter 14: 16-Bit Ms-Dos Programming Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79889
Sample Questions
Q1) Video services are handled by INT 16h.
A)True
B)False
Q2) Real-mode programming is also known as 16-bit mode programming.
A)True
B)False
Q3) The transient command processor always remains in memory at an address just above the DOS kernel.
A)True
B)False
Q4) Video memory begins at offset 00100h in the IBM-PC's memory.
A)True
B)False
Q5) MS-DOS services are handled by INT 21h.
A)True
B)False
Q6) INT 21h,function 10h writes a string to standard output.
A)True
B)False
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Chapter 15: Disk Fundamentals Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79888
Sample Questions
Q1) The NTFS file system supports Unicode filenames,but FAT32 does not.
A)True
B)False
Q2) Translation of disk geometry to logical sector numbers is always performed by the operating system.
A)True
B)False
Q3) The cluster allocation table (CAT)keeps track of all clusters used by a file.
A)True
B)False
Q4) The MS-DOS file attribute byte does not include a hidden attribute.
A)True
B)False
Q5) Each read-write head in a disk drive moves independently of the other read/write heads.
A)True
B)False
Q6) An extended partition can be divided into any number of logical partitions.
A)True
B)False
Page 18
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Chapter 16: Bios-Level Programming Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79887
Sample Questions
Q1) The INT 8h service routine retrieves the keyboard scan code and looks up the corresponding ASCII code.
A)True
B)False
Q2) INT 10h function 9 displays a character and attribute at the current cursor position.
A)True
B)False
Q3) MS-Windows cannot run MS-DOS programs in full-screen mode.
A)True
B)False
Q4) The BIOS data area includes the keyboard typeahead buffer.
A)True
B)False
Q5) The default MS-DOS video display is 80 columns by 25 rows.
A)True
B)False
Q6) The BIOS data area includes the current video mode.
A)True
B)False
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Chapter 17: Expert Ms-Dos Programming Assessment
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15 Verified Questions
15 Flashcards
Source URL: https://quizplus.com/quiz/79886
Sample Questions
Q1) Memory-mapped video is set up so that when characters are placed in memory at predetermined addresses,the characters appear on the video display only when a special control value is output to a hardware port.
A)True
B)False
Q2) The following are all permissible segment ALIGN types: BYTE,WORD,DWORD,REAL4.
A)True
B)False
Q3) The following is an example of a valid segment override: mov eax,ds:var1
A)True
B)False
Q4) When an interrupt executes,an address in the Exception Process Table is used to locate the interrrupt handler.
A)True
B)False
Q5) In large model programs,all code segments have the same name. A)True B)False
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