Computer Architecture (Information Technology)
Test is on Computer Architecture
Questions
In which of the following tasks performed by CPU must instructions be decoded to determine the required action?
- Fetch instructions
- Fetch data
- Process data
- Interpret instructions
- Write data
The ____________ flag sets Program Status Word if an operation results in carry into or borrow out of the high-order bit.
- sign
- zero
- equal
- carry
- overflow
The ___________ flag bit, supported by 8085 CPU, is set when the result of an ALU operation results in even parity.
- Z
- P
- CY
- S
- AC
In which of the following computer architectures are load and store the only operations that interact with memory?
- The stack machine
- The accumulator machine
- The load/store machine
- Flags
- MBR
Which of the following operations is performed in the instruction cycle where address translation is performed first and then fetching of operands from memory takes place?
- Write
- Fetch
- Decode
- Exit
- Halt
______________ memory enables one to make a comparison of desired bit locations within a word for a specified match and to do this for all words simultaneously.
- Sequential
- Direct
- Random
- Associative
- Indirect
Which of the following data types, supported by IBM 370, may be either unsigned or signed and if signed, then it is stored in 2's compliment form?
- Floating point
- Decimal
- Binary
- Binary logical
- Character
Which of the following I/O commands is addressed by the CPU to activate a peripheral device?
- Test command
- Control command
- Read command
- Write command
- CLS command
Which of the following activities is involved in CPU communication with I/O device, where the I/O module accepts commands from the CPU?
- Data
- Status reporting
- Address recognition
- Command decoding
- Data buffering
In which of the following modes does the DMA controller perform DMA transfers at the fastest possible rate as long as the I/O device asserts its DMA request?
- Demand transfer mode
- Block transfer mode
- Single transfer mode
- Flyby DMA transfer
- Fetch-and-deposit DMA transfer
Which of the following disk performance parameters indicates the time required to rotate the disk to get the wanted sector beneath the head?
- Seek time
- Rotational delay
- Transfer time
- Access time
- RAID
In which of the following types of DMA configuration is the concept of integrated DMA to connect I/O modules to DMA controller using I/O bus?
- Single Bus Integrated DMA
- DMA using an I/O bus
- Single Bus Detached DMA
- Interrupts
- Program-controlled I/O
In which of the following modes of data transfer does the processor write a unit of data to memory?
- Memory to CPU
- CPU to Memory
- I/O to CPU
- CPU to I/O
- I/O to or from Memory
________________ is the state in instruction cycle that analyses the instruction to determine the type of operation to be performed and operands to be used.
- Instruction Address Calculation
- Instruction Fetch
- Operand Address Calculation
- Instruction Operation Decoding
- Operand Fetch
Which of the following is a 16-bit register of CPU that points to the current location of the memory where the instructions are to be written?
- Stack pointer
- Program counter
- MAR
- MDR
- IR