Refer to the exhibit.
After HostA pings HostB, which entry will be in the ARP cache of HostA to support this transmission?
A.
Exhibit A
B.
Exhibit B
C.
Exhibit C
D.
Exhibit D
E.
Exhibit E
F.
Exhibit F
Explanation:
When a host needs to reach a device on another subnet, the ARP cache entry will be that of the
Ethernet address of the local router (default gateway) for the physical MAC address. The
destination IP address will not change, and will be that of the remote host (HostB).
According to the explanation the answer should be A and not D.
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The explanation does not meet with the answer
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The correct choice is A
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you have a brain all right?
as the host can know MAC host on another subnet?
B is correct
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sorry, D correct
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It most certainly is not D or B.. you make a lab ping across subnets and see what your arp cache holds.. the answer is A.
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An ARP resolves to match the IP and MAC of your DG. The DG of host A is fa 0/0 on Router 1. D is the correct answer
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Ah you are correct, I did not notice different subnets, answer is most certainly D. Thank You. 🙂
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This is an very elementary question. Make sure you guys understand how L2 frames are formed if the destination IP address is not in the same network as the sender’s is.
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From your home pc ping yahoo.com ip address 206.190.36.45 and you’ll never see that in your arp -a results at the command prompt. You’ll only see your gateway ip along with its mac address. So correct answer is D.
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As per the explanation destination IP address must be of Host B. And MAC addres of Local Default gateway.
Answer D is not correct as per the explaination.
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Explanation is correct and so is the answer. You did not understand it. “Destination IP address” refers to the layer 3 address, which has abolutely nothing to do with “IP on the ARP cache” in this case.
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Guys:
You have to remember always source and destination IP address never change, the only thing that routers does it’s strip off, it’s layer 2 mac address:
Here is my easy explanation for this,
Host_A IP address=(192.168.6.27) pings to Host_B ip=(192.168.4.7)
Host_B sent an ICMP_ECHO back to the destination IP address of Host_A.
When Router1 received the packet from Router2, R1 strip off the mac-address of R2 to replace it by the R1 mac-address for fa0/0 (000f.2480.8916).
Remember router do decision based in his routing table, so the IP default gateway will forward the data-packet to it destination IP address which is Host_A 192.168.6.27 so the answer it’s 😀 D D
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