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This set of MCQs helps students to learn about I/O units (Keyboard, mouse, printer, etc.) which typically consist of a mechanical component and an electronic component where electronic component is called the device controller. There is always a device controller and a device driver for each device to communicate with the Operating Systems.
If one or more devices use a common set of wires to communicate with the computer system, the connection is called ______
Which of the following is not a multitasking operating system?
A ____ a set of wires and a rigidly defined protocol that specifies a set of messages that can be sent on the wires.
Port
Node
Bus
None of the mentioned
When device A has a cable that plugs into device B, and device B has a cable that plugs into device C and device C plugs into a port on the computer, this arrangement is called a _________.
Port
Daisy chain
Bus
Cable
The _________ present a uniform device-access interface to the I/O subsystem, much as system calls provide a standard interface between the application and the operating system.
You can switch from one program to another by clicking within the desired program"s icon from the
The ..... displays the name of every computer user on the computer.
Wish list screen
Command screen
Welcome screen
None of the above
A ________ is a collection of electronics that can operate a port, a bus, or a device.
Controller
Driver
Host
Bus
The ______ register is read by the host to get input.
Flow in
Flow out
Data in
Data out
The ______ register is written by the host to send output.
Status
Control
Data in
Data out
The hardware mechanism that allows a device to notify the CPU is called _______.
Polling
Interrupt
Driver
Controlling
The CPU hardware has a wire called __________ that the CPU senses after executing every instruction.
Interrupt request line
Interrupt bus
Interrupt receive line
Interrupt sense line
The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.
Interrupt request line
Device driver
Interrupt handler
All of the mentioned
You can select My Computer icon and press Alt + Enter to,
Delete it from desktop permanently
Open it in Explorer mode
Open System Properties dialog box
Pin it on Start menu
You can switch from one program to another on the desktop by clicking within the desired program's window or by clicking on its ...... button.
Icon
Taskbar button
Folder
None of above
