Computer Networking
When using the loopback address, if TCP/IP is installed correctly, when should you receive a response?

Only if the address fails
None of these
Within two minutes
After the next host comes online
Immediately

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Computer Networking
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?

The configuration register setting is incorrect.
You didn
NVRAM is corrupted.
The newly upgraded IOS is not compatible with the hardware of the router.

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Computer Networking
When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?

By default, all VLANs are allowed on the trunk.
Only extended VLAN's are allowed by default.
No VLAN's are allowed, you must configure each VLAN by hand.
Only configured VLAN's are allowed on the link.

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