In asynchronous serial communication the physical layer provides__________________?

A. Start and stop signalling
B. Flow control
C. Both a and b
D. None of these

In analog computer_______________________?

A. Input is never converted to digital form
B. Input is first converted to digital form
C. Output is displayed in digital form
D. All of the above

The data link layer takes the packets from ________________ and encapsulates them into frames for transmission?

A. Network layer
B. Physical layer
C. Transport layer
D. Application layer

Which device is used asthe standard pointing device in a Graphical User Environment ?

A. Keyboard
B. Mouse
C. Joystick
D. Track ball

An endpoint of an inter-process communication flow across a computer network is called_________________?

A. Socket
B. Pipe
C. Port
D. None of these

The two main components of the CPU is__________________?

A. Registers and main memory
B. Alu and bus
C. Control unit and registers
D. Control unit and alu

Which type of device is the computer monitor ?

A. Input
B. Output
C. Processing
D. Software

The arithmatic/logic unit performs the following actions__________________?

A. Checks data for accuracy
B. Does calculations using addition, substraction, multiplication, and division
C. Does logical comparisons, such as equal to, greater than, less than
D. Does both calculations and logical comparisons

The _______________ takes on different shapes depending on the task you are performing?

A. Active tab
B. Insertion point
C. Mouse pointer
D. Ribbon

The most frequently used piece of hardware for inputting data is ___________________?

A. Keyboard
B. Floppy disk
C. Cursor
D. Software