Computer-Networks
September 8, 2024Transport-layer-Protocol
September 8, 2024Computer-Networks
| Question 49 |
Assume that “host1.mydomain.dom” has an IP address of 145.128.16.8. Which of the following options would be most appropriate as a subsequence of steps in performing the reverse lookup of 145.128.16.8? In the following options “NS” is an abbreviation of “nameserver”.
| Query a NS for the root domain and then NS for the “dom” domains | |
| Directly query a NS for “dom” and then a NS for “mydomain.dom” domains | |
| Query a NS for in-addr.arpa and then a NS for 128.145.in-addr.arpa domains | |
| Directly query a NS for 145.in-addr.arpa and then a NS for 128.145.in-addr.arpa domains |
Question 49 Explanation:
We are performing reverse lookup of IP address to its hostname.
First we need to locate in-addr.apra, then perform reverse lookup of 8.16.128.145.in-addr.arpa which will point to host1.mydomain.com.
First we need to locate in-addr.apra, then perform reverse lookup of 8.16.128.145.in-addr.arpa which will point to host1.mydomain.com.
Correct Answer: C
Question 49 Explanation:
We are performing reverse lookup of IP address to its hostname.
First we need to locate in-addr.apra, then perform reverse lookup of 8.16.128.145.in-addr.arpa which will point to host1.mydomain.com.
First we need to locate in-addr.apra, then perform reverse lookup of 8.16.128.145.in-addr.arpa which will point to host1.mydomain.com.
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