Gateway of last resort is not set. 172.18.109.0/26 is variously subnetted, 7 subnets, 3 masks O 172.18.109.0/26 [110/10] via 172.18.32.1, 00:00:24, Serial0/0/0 O 172.18.109.64/26 [110/20] via 172.18.32.6, 00:00:56, Serial 0/0/1 O 172.18.109.128/26 [110/10] via 172.18.32.1, 00:00:24, Serial 0/0/0 C 172.18.109.192/27 is directly connected, GigabitEthernet0/0 L 172.18.109.193/27 is directly connected, GigabitEthernet0/0 C 172.18.109.224/27 is directly connected, GigabitEthernet0/1 L 172.18.109.225/27 is directly connected, GigabitEthernet0/1 172.18.32.0/24 is variably subnetted, 4 subnets, 2 masks C 172.18.32.0/30 is directly connected, Serial0/0/0 L 172.18.32.2/32 is directly connected, Serial0/0/0 C 172.18.32.4/30 is directly connected, Serial0/0/1 L 172.18.32.5/32 is directly connected, Serial0/0/1 S 172.18.33.0/26 [1/0] via 172.18.32.1, 00:00:24, Serial0/0/0 R1#
Refer to the exhibit. Which interface will be the exit interface to forward a data packet that has the destination IP address 172.18.109.152?
- Serial0/0/0
- GigabitEthernet0/0
- GigabitEthernet0/1
- None, the packet will be dropped.
| Explanation & Hint:
To determine the correct exit interface for a data packet with the destination IP address 172.18.109.152, we need to look at the subnetting information in the routing table provided. The IP address 172.18.109.152 falls within the subnet 172.18.109.128/26. Let’s examine the relevant entries in the routing table: O 172.18.109.128/26 [110/10] via 172.18.32.1, 00:00:24, Serial 0/0/0This entry indicates that to reach the subnet 172.18.109.128/26, packets should be sent via 172.18.32.1, and the exit interface to use is Serial 0/0/0. This is an OSPF-determined route (denoted by “O”), and it is directing traffic for the subnet that includes the IP address 172.18.109.152. Therefore, the exit interface to forward a data packet that has the destination IP address 172.18.109.152 will be Serial 0/0/0. |