200-201 · Question #447
200-201 Question #447: Real Exam Question with Answer & Explanation
The correct answer is B: IP addresses in the log messages do not match.. When devices are separated by a Layer 3 device performing Network Address Translation (NAT), the IP addresses in the log messages may not match. This is because NAT modifies the IP addresses in the IP header as packets traverse the network, translating internal private IP address
Question
Which difficulty occurs when log messages are compared from two devices separated by a Layer 3 device that performs Network Address Translation?
Options
- ATimestamps of the log messages are different.
- BIP addresses in the log messages do not match.
- CLog messages contain incorrect information.
- DIP addresses in the log messages match.
Explanation
When devices are separated by a Layer 3 device performing Network Address Translation (NAT), the IP addresses in the log messages may not match. This is because NAT modifies the IP addresses in the IP header as packets traverse the network, translating internal private IP addresses to external public ones (or vice versa). As a result, the devices will see different IP addresses for the same communication, causing a mismatch in the logs.
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