Bob obtained the following information from a workstation: C:\\>ipconfig Windows
ID: 3536924 • Letter: B
Question
Bob obtained the following information from a workstation:
C:>ipconfig
Windows IP Configuration
Ethernet adapter El90x 1:
IP Address : 10.0.0.98
Subnet Mask : 255.255.0.0
Default Gateway : 10.0.250.254
He checked his arp table with the following entry:
C:>arp -a
Interface: 10.0.0.98 on Interface 2
Internet Address Physical Address Type
10.0.250.254 00-eO-bO-ac-ac-a8 dynamic
Next, he executed the following command:
C:>ping 10.0.255.255
And received the following reply:
Pinging 10.0.255.255 with 32 bytes of data:
Reply from 10.0.255.255: bytes=32 time<10ms ttl="255"
Reply from 10.0.255.255: bytes=32 time<10ms ttl="255"
Reply from 10.0.255.255: bytes=32 time<10ms ttl="255"
finally he obtained the following:
C:> arp-a
Interface: 10.0.0.98 on Interface 2
Internet Address Physical Address Type
10.0.116.21 00-00-f4-a9-9d-d4 dynamic
10.0.224.34 00-00-ld-Of-4b-71 dynamic
10.0.108.2 00-00-f4-a9-98-21 dynamic
10.0.17.129 00-00-f4-b1-b6-57 dynamic
10.0.7.141 00-10-5a-05-ef-f9 dynamic
10.0.0.153 00-60-bO-79-c3-80 dynamic
10.0.3.3 00-eO-34-8b-2f-ff dynamic
10.0.1.250 00-00-Oc-4e-32-90 dynamic
10.0.1.251 00-00-Oc-4e-32-90 dynamic
10.0.250.254 00-eO-bO-ac-ac-a8 dynamic
169.254.0.1 00-00-09-6c-4b-58 dynamic
a. How can Bob account for the new entries in his arp table?
b. How would you explain the arp entry for 10.0.1.250 and 10.0.1.251?
c. How would you explain the arp entry for 169.254.0.1?
Explanation / Answer
before ping the arp-a only shows the address of default gateway... but after ping the data packet are passed through multiple gateway ..so the arp-a shows that all the gateway address ......where data are travelled all entries are the address of different gateways ..