1.Why router linkup automatically when its connected face to face?
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If centralized router power off can other routes communicate, if not then what is the alternatives solutions into static route.
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If we want to send ping packet from this topology Pcs A and B 2 pcs A and B are connected with one switch and switch connected with one router and
router connected with second router and second router connected with one switch then switch connected with 2 pcs C and D. Or pcs C and D are connected with one that switch. Can we get arp pacet from pcs c nd D or not?