Computer Networking
How many digits of the DNIC (Data Network Identification Code) identify the country?

first five
first four
first six
first three
None of these

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Computer Networking
Which statement describes a spanning-tree network that has converged?

All switch and bridge ports are in either the forwarding or blocking state.
All switch and bridge ports are in the forwarding state.
All switch and bridge ports are assigned as either root or designated ports.
All switch and bridge ports are either blocking or looping.

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Computer Networking
UDP is:

Connection oriented and unreliable
Connection orientated and reliable
Connectionless and unreliable
None of these
Not a part of the TCP/IP suite

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