Computer Networking
The main difference between TCP and UDP is

TCP is an Internet protocol where as UDP is an ATM protocol
All of these
UDP is a datagram where as TCP is a connection oriented service
UDP is connection oriented where as TCP is datagram service
None of these

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Computer Networking
TCP is:

Operates at the Data Link layer
Connectionless and unreliable
Connection orientated and reliable
Connection orientated and unreliable
None of these

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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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