When you are trouble

1、When you are perform

When you are performing media recover， and an archived log is lost or corrupt， ...

2、When you execute the

When you execute the "ip helper-address" command on a router， which three UDP ports&#8...

3、When you are allowin

When you are allowing RMAN to backup your archived redo log files，how does RMAN ...

4、When would you want&

When would you want to disable souce-route and icmp on a router of interface？

5、When gateways are re

When gateways are registering with a gatekeeper， the gatekeeper can be（）.AOn the same s...

6、You need to troubles

You need to troubleshoot an issue on the switched LAN. When you issue a command&#...