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

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

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Computer Networking
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

Router(config-if)# encapsulation frame-relay ansi
Router(config-if)# encapsulation frame-relay cisco
Router(config-if)# encapsulation frame-relay q933a
Router(config-if)# encapsulation frame-relay ietf

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Computer Networking
Modulation is the process of

performing data encryption.
Multiplexing various signals into high speed line signals
converting digital signals to analog signals
converting analog signals to digital signals

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