The user of Host1 wants to ping the DSL modem/router at 192.168.1.254. Based on the Host1 ARP table that is shown in the exhibit, what will Host1 do()。
A.send a unicast ARP packet to the DSL modem/router
B.send unicast ICMP packets to the DSL modem/router
C.send Layer 3 broadcast packets to which the DSL modem/router responds
D.send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router
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A.It converges quickly.
B.OSPF is a classful routing protocol.
C.It uses cost to determine the best route.
D.It uses the DUAL algorithm to determine the best route.
E.OSPF routers send the complete routing table to all directly attached routers.
F.OSPF routers discover neighbors before exchanging routing information.
A.Router R2 will not form a neighbor relationship with R1.
B.Router R2 will obtain a full routing table, including a default route, from R1.
C.R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.
D.R2 will not have a route for the directly connected serial network, but all other directly connected
A.One router is running RIPv1.
B.RIP neighbor is 224.0.0.9.
C.The network contains a loop.
D.Network 10.10.1.0 is reachable.
A.AH
B.MB5
C.PSK
D.ESP
A.172.31.17.4 /30
B.172.31.51.16 /30
C.172.31.64.0 /18
D.172.31.80.0 /22
E.172.31.92.0 /22
F.172.31.192.0 /18
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