Accenture Interview Questions and Answers

You can copy files from one device to another by using file transfer protocols like FTP, SCP, or by physically transferring the files via USB or external storage devices.

• Use FTP (File Transfer Protocol) to transfer files over a network

• Use SCP (Secure Copy Protocol) for secure file transfers

• Physically transfer files by connecting devices via USB or using external storage devices like USB drives or SD cards

ISR routine is a function that is executed in response to an interrupt signal.

• ISR stands for Interrupt Service Routine

• It is used to handle hardware interrupts

• ISR routines are written in C language

• They are executed when an interrupt signal is received

• ISR routines should be short and efficient

• They should not block other interrupts

• Examples of ISR routines include handling keyboard input or timer interrupts

Device drivers are software programs that allow the operating system to communicate with hardware devices.

• Device drivers act as a translator between the hardware device and the operating system.

• They provide a standardized interface for the operating system to interact with different types of hardware devices.

• Device drivers help improve system stability and performance by enabling efficient communication between hardware and software.

• Examples of device drivers include drivers ...read more

Storage classes in C define the scope and lifetime of variables.

• Storage classes include auto, register, static, extern, and typedef.

• Auto variables are local to the block they are declared in.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared in one file and can be used in another file.

• Typedef is used to create new data types.

Swapping two variables without using a third variable

• Use XOR operation: a = a ^ b; b = a ^ b; a = a ^ b;

• Use addition and subtraction: a = a + b; b = a - b; a = a - b;

• Use multiplication and division: a = a * b; b = a / b; a = a / b;