Certified Information Systems Security Professional CISSP · Free Practice Question Easy
Question 64
- A Switch
- B Gateway
- C Bridge
- D Router
Reveal correct answer
Correct answer: B
Explanation
Correct Answer:
B is correct. Software gateways are more complex devices than the other mentioned devices because they look within the frame to gain more than just address and routing information. Translation may need to be performed when entities on two unlike environments need to communicate using proprietary protocols. (Although gateways can work at different OSI layers, the CISSP exam usually puts them at the application layer.)
Incorrect Answers:
A is incorrect. A switch does not work at the application layer and does not translate different protocols and data formats between disparate environments.
C is incorrect. A bridge does works at the data link layer and does not translate different protocols and data formats between disparate environments.
D is incorrect. A router works at the network layer and does not translate different protocols and data formats between disparate environments.
Discussion
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