| # |
Harvard
architecture
|
Von-Neumann
architecture
|
|
1
|
It
has separate buses for instruction as well as data fetching.
|
It
shares single common bus for instruction and data fetching.
|
|
2
|
Easier
to pipeline, so high performance can be achieve.
|
Low
performance as compared to Harvard architecture.
|
|
3
|
Comparatively
high cost.
|
It
is cheaper.
|
|
4
|
data
memory and program memory are stored physically in different locations
|
data
memory and program memory are not stored physically
|
|
5
|
No
chances exist for accidental corruption of program memory.
|
Accidental
corruption of program memory may occur if data memory and program memory are
stored
|
9.Explain the backing up and restoring files in Linux. Ans. 1. Backing-up and restoring files is done only by system administrator. 2. Because of built-in features, Linux doesn’t allow users to back-up their own files to removable disks. 3. It’s not enough to know that performing backup is your job, you need to formulate a strategy to making sure your system is not vulnerable to sudden disastrous disruptions. 4. If you have a high capacity tape drive and several good set of restore disks you can take backup every few days. 5. If you are managing a system with scores of users, you might find it more sensible to back up accounts and system configurations. 6. Only you can decide ‘what’ to backup, you need to decide ‘how frequently’ to perform backups, whether to maintain series of incremental backup. 7. You should maintain perfect backups without ever needing to restore to them, this means encouraging users to keep multiple copies of their important files in their ho...
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