2. Consider the routing table and ARP table below from a Cisco router. This rout
ID: 3750521 • Letter: 2
Question
2. Consider the routing table and ARP table below from a Cisco router. This router has two Ethernet interfaces: Ethernet0/0 and Ethernet0/1 192.168. 18./24 is directly connected, Etherneto/e R 192.168.11.e/24 [120/1] via 192.168.18.7, 0a:00:11, Ethernetere S 192.168. 50.8/24 [1/] via 192.168.1.5 C 192.168.1.0/24 is directly connected, Ethernete/1 R 192.168.2.0/24 [12/2] via 192.168.10.7, 0:02:11, Ethernete/a Router6>show arp Protocol Add ress Internet 192.168.10.7 Internet 192.168.1.1 Internet 192.168.1.2 Internet 192.168.1.5 Internet 192.168.1.4 Internet 192.168.1.18 Internet 192.168.1.20 Router6 Age (min) Hardware Addr Type Interface 41 0030.8540.c460 ARPA Ethernete/e 286 0d.bd4f.1380 ARPA Ethernet0/l 212 098d.bd56.2080 ARPA Ethernet0/i 1 808C.2983.9ec2 ARPA Ethe rnet0/l 10 0015.171d.f3d0 ARPA Ethernet0/1 1 015.1780.1bd1 ARPA Ethernet0/1 206 09c0.b773.867e ARPA Ethernet8/1 A route is marked with C (Connected) if the subnet is directly connected to the interface. A route is marked with R (RIP) or S (Static) if the subnet is reached through another router, also called next hop. The address of this router is the one you see after the "via keyword in the routing table.Explanation / Answer
Answer A:
*********
To decide the destination address we have to AND operation with subnet class so
192.168.2.5
255.255.255.0
---------------
192.168.2.0 will fall under this route
1) packet will be sent via Ethernet0/0
Destination IP 192.168.2.5 which is not directly connected as see the last entry
R 192.168.2.0/24 via 192.168.10.7 Ethernet0/0
2) As from the given information if the destination is directly connected then put MAC address of receiving host.
else
put MAC address of next hop
so 192.168.2.0/24 is not directly connected so we will put 192.168.10.7's MAC address which is 0030.8540.C460
Answer B:
*********
1) packet will be sent via Ethernet0/1
Destination IP 192.168.1.5 which is directly connected as see the second last entry
C 192.16.1.0/24 is directly connected, Ethernet0/1
2) As from the given information if the destination is directly connected then put MAC address of receiving host.
else
put MAC address of next hop
so 192.168.1.0/24 is directly connected so we will put 192.168.1.1's MAC address which is 000d.bd4f.1380
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