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Sia ? 4 years, 3 months ago
| LAN | MAN | WAN |
| LAN stands for local area network. | MAN stands for metropolitan area network. | WAN stands for wide area network. |
| LAN’s ownership is private. | MAN’s ownership can be private or public. | While WAN also might not be owned by one organization. |
| The transmission speed of a LAN is high. | While the transmission speed of a MAN is average. | Whereas the transmission speed of a WAN is low. |
| The propagation delay is short in a LAN. | There is a moderate propagation delay in a MAN. | Whereas, there is a long propagation delay in a WAN. |
| There is less congestion in LAN. | While there is more congestion in MAN. | Whereas there is more congestion than MAN in WAN. |
| LAN’s design and maintenance is easy. | While MAN’s design and maintenance is difficult than LAN. | Whereas WAN’s design and maintenance is also difficult than LAN as well MAN. |
| There is more fault tolerance in LAN. | While there is less fault tolerance. | In WAN, there is also less fault tolerance. |
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Sia ? 4 years, 4 months ago
Software is a collection of instructions and data that tell a computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work.
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| Sr.no | Multiprogramming | Multi-tasking |
| 1. | Both of these concepts are for single CPU. | Both of these concepts are for single CPU. |
| 2. | Concept of Context Switching is used. | Concept of Context Switching and Time Sharing is used. |
| 3. | In multiprogrammed system, the operating system simply switches to, and executes, another job when current job needs to wait. | The processor is typically used in time sharing mode. Switching happens when either allowed time expires or where there other reason for current process needs to wait (example process needs to do IO). |
| 4. | Multi-programming increases CPU utilization by organising jobs . | In multi-tasking also increases CPU utilization, it also increases responsiveness. |
| 5. | The idea is to reduce the CPU idle time for as long as possible. | The idea is to further extend the CPU Utilization concept by increasing responsiveness Time Sharing. |
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