Understanding ARM Architecture

What is the primary function of the CPSR register in ARM processors? a) Stores instructions b) Manages cache operations c) Stores processor status and flags d) Executes system calls

• e) Controls memory allocation

• c) Stores processor status and flags

• f) Manages input/output operations

• g) Handles interrupt requests

Which ARM mode has the highest priority for exceptions? a) User mode b) IRQ mode c) FIQ mode d) Supervisor mode

• c) FIQ mode

• b) Debug mode

• d) Monitor mode

• a) Kernel mode

What is the primary purpose of the Thumb instruction set in ARM? a) Debugging b) Faster execution c) Reduced code size d) Enhanced floating-point performance

• d) Better graphics performance

• b) Increased memory usage

• c) Reduced code size

• a) Improved battery life

What is the primary characteristic of the ARM processor architecture? a) Complex instruction set b) Low power consumption c) Exclusive use of cache memory d) Support for hyper-threading

• d) No support for multi-core processing

• a) Simple instruction set

• b) Low power consumption

• c) Mandatory use of cache memory

What does the “T” bit in the CPSR register signify? a) ARM or Thumb mode b) Current privilege level c) Trap flag for debugging d) Status of memory protection

• a) ARM or Thumb mode

• c) Mode of instruction set

• b) Status of CPU cache

• d) Current execution state

Which ARM architecture version introduced the NEON technology? a) ARMv5 b) ARMv6 c) ARMv7 d) ARMv8

• ARMv4

• c) ARMv7

• ARMv9

• ARMv3

What is the maximum number of general-purpose registers in ARM architecture? a) 16 b) 32 c) 64 d) 128

• 16

• 40

• 24

• 8

In ARM architecture, what does the term 'pipeline' refer to? a) A method of memory allocation b) A technique for instruction execution c) A type of cache memory d) A way to manage power consumption

• b) A technique for instruction execution

• A method for data encryption

• A format for file storage

• A strategy for network communication

What is the role of the Link Register (LR) in ARM processors? a) Stores the current instruction b) Holds the return address for function calls c) Manages interrupt requests d) Controls the execution mode

• d) Controls the execution mode

• c) Manages interrupt requests

• a) Stores the current instruction

• b) Holds the return address for function calls

Which of the following is a feature of ARM's big.LITTLE architecture? a) Single-core performance b) Multi-threading support c) Energy efficiency d) Enhanced graphics processing

• d) Increased memory bandwidth

• c) Energy efficiency

• b) Support for legacy software

• a) High clock speed