Nokia Certified Network Associate (NCNA) — Question 42

Which of the following are protocols belonging to the OSI suite of protocols? (Choose two)

Answer options

• A. OSPF
• B. BGP
• C. X.500
• D. IS-IS
• E. Ethernet

Correct answer: C, D

Explanation

The correct answers, C (X.500) and D (IS-IS), are both part of the OSI protocol suite. OSPF and BGP are routing protocols that belong to the Internet Protocol suite, while Ethernet is a data link layer protocol, not specifically part of the OSI protocols.