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

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Computer Networking
A front-end processor is

None of these
a processor in a large-scale computer that executes operating system instructions
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
a user computer system
preliminary processor of batch jobs.

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Computer Networking
The Internet Control Message Protocol (ICMP)

provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
None of these
allows gateways to send error a control messages to other gateways or hosts
reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
All of these

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