Computer Networking
Which WAN encapsulations can be configured on an asynchronous serial connection?1. PPP2. ATM3. HDLC4. SDLC5. Frame Relay

2 and 4
All of these
3, 4 and 5
1 and 2

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Computer Networking
The Internet Control Message Protocol (ICMP)

allows gateways to send error a control messages to other gateways or hosts
reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
None of these
All of these
provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another

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