Computer Networking
X.21 is

network access standard for connecting stations to a circuit-switched network
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued by ISO
None of these
a method access control technique for multiple-access transmission media

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Computer Networking
You have the following routing table. Which of the following networks will not be placed in the neighbor routing table?R 192.168.30.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0C 192.168.40.0/24 is directly connected, Serial0 172.16.0.0/24 is subnetted, 1 subnetsC 172.16.30.0 is directly connected, Loopback0R 192.168.20.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0R 10.0.0.0/8 [120/15] via 192.168.40.1, 00:00:07, Serial0C 192.168.50.0/24 is directly connected, Ethernet0

192.168.30.0
172.16.30.0
10.0.0.0
All of them will be placed in the neighbor routing table

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