|
Sr. no.
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HECU
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LECU
|
|
1
|
High
sped electronics control units are deployed in critical control units.
|
Low
speed electronic control units are deployed in applications.
|
|
2
|
Response
time is critical
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Response
time is not critical
|
|
3
|
They
Include fuel injection systems, antilock brake systems, engine control,
electronic throttle, steering controls, transmission control and central
control units.
|
They
are built around microprocessors and microcontrollers and digital signal
processors, Audio controller, passenger and driver door locks, door glass
control etc.
|
|
4
|
High
cost involved
|
Low
cost involved
|
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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