Computer Networking
Which of the following describe the DHCP Discover message?1. It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.2. It uses UDP as the Transport layer protocol.3. It uses TCP as the Transport layer protocol.4. It does not use a layer 2 destination address.

1 and 2
1 only
3 and 4
4 only

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Computer Networking
The packets switching concept was first proposed

in the late 1980s for the Defense Ministry of US.
in the early 1960s for military communication systems, mainly to handle speech
in the late 1950s for Defense Ministry of US
All of these
None of these

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