Computer Networking
Which statements are true regarding ICMP packets?1. They acknowledge receipt of a TCP segment.2. They guarantee datagram delivery.3. They can provide hosts with information about network problems.4. They are encapsulated within IP datagrams.

2 and 3
1 only
2, 3 and 4
3 and 4

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

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

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Computer Networking
You type the following command into the router and receive the following output:Router#show serial 0/0 ^% Invalid input detected at '^' marker.Why was this error message displayed?

Part of the command is missing.
You cannot have a space between serial and 0/0.
You need to be in privileged mode.
The router does not have a serial0/0 interface.

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Computer Networking
Baseband is

transmission of signals without modulation
the simultaneous transmission of data to a number of stations
All of these
None of these
a signal all of whose energy is contained within a finite frequency range

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Computer Networking
The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

can do one way data transmission only
can receive and send data simultaneously
cannot talk at once
can send or receive data one at a time
None of these

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