Hardware Devices
Question 1 |
Match the following Layers and Protocols for a user browsing with SSL :
a-(iv), b-(i), c-(ii), d-(iii) | |
a-(iii), b-(ii), c-(i), d-(iv) | |
a-(ii), b-(iii), c-(iv), d-(i) | |
a-(iii), b-(i), c-(iv), d-(ii) |
Question 1 Explanation:
HTTP→ Application layer
TCP→ Transport layer
IP→ Network layer
PPP→ Data link layer
TCP→ Transport layer
IP→ Network layer
PPP→ Data link layer
Question 2 |
Match the following w.r.t. Input/Output management :
a-iii, b-iv, c-i, d-ii | |
a-ii, b-i, c-iv, d-iii | |
a-iv, b-i, c-ii, d-iii | |
a-i, b-iii, c-iv, d-ii |
Question 2 Explanation:
Device controller→ Performs data transfer
The Device Controller works like an interface between a device and a device driver. I/O units (Keyboard, mouse, printer, etc.) typically consist of a mechanical component and an electronic component where electronic component is called the device controller.
Device driver → Processing of I/O request
Device drivers are modules that can be plugged into an OS to handle a particular device or category of similar devices.
Interrupt handler→ Extracts information from the controller register and store it in data buffer
Interrupt handlers have a multitude of functions, which vary based on what triggered the interrupt and the speed at which the interrupt handler completes its task. For example, pressing a key on a computer keyboard.
Kernel I/O subsystem→ I/O scheduling
Kernel provide many services related to I/O. Several services like scheduling, buffering, caching, spooling, device reservation and error handling. These are provided by the kernel’s I/O subsystem and build on the hardware and device driver infrastructure.
The Device Controller works like an interface between a device and a device driver. I/O units (Keyboard, mouse, printer, etc.) typically consist of a mechanical component and an electronic component where electronic component is called the device controller.
Device driver → Processing of I/O request
Device drivers are modules that can be plugged into an OS to handle a particular device or category of similar devices.
Interrupt handler→ Extracts information from the controller register and store it in data buffer
Interrupt handlers have a multitude of functions, which vary based on what triggered the interrupt and the speed at which the interrupt handler completes its task. For example, pressing a key on a computer keyboard.
Kernel I/O subsystem→ I/O scheduling
Kernel provide many services related to I/O. Several services like scheduling, buffering, caching, spooling, device reservation and error handling. These are provided by the kernel’s I/O subsystem and build on the hardware and device driver infrastructure.
There are 2 questions to complete.