CompTIA
SY0-301 · Question #331
SY0-301 Question #331: Real Exam Question with Answer & Explanation
The correct answer is C: SCP. SCP (Secure Copy Protocol) operates at the Application layer (Layer 7), the highest layer of the OSI model, making it the correct answer for verifying connectivity at the highest OSI level.
Question
Which of the following protocols would be used to verify connectivity between two remote devices at the HIGHEST level of the OSI model?
Options
- AICMP
- BIPSec
- CSCP
- DTCP
Explanation
SCP (Secure Copy Protocol) operates at the Application layer (Layer 7), the highest layer of the OSI model, making it the correct answer for verifying connectivity at the highest OSI level.
Common mistakes.
- A. ICMP operates at Layer 3 (Network) of the OSI model and is used by tools like ping to test basic network reachability, not application-layer connectivity.
- B. IPSec operates at Layer 3 (Network) as a suite of protocols for securing IP communications, not at the Application layer.
- D. TCP operates at Layer 4 (Transport) of the OSI model, providing reliable connection-oriented communication but not reaching the Application layer.
Concept tested. OSI model layer identification for protocols
Reference. https://www.rfc-editor.org/rfc/rfc4251
Community Discussion
No community discussion yet for this question.