CompTIA Network+ (N10-006) — Question 80

Which of the following areas MUST all other OSPF areas connect to in a properly configured network?

Answer options

• A. 0
• B. 1
• C. 110
• D. 255

Correct answer: A

Explanation

The correct answer is A, as Area 0 is the backbone area in OSPF and all other areas must connect to it for proper routing. Options B, C, and D do not pertain to the backbone area and thus are not valid connections for OSPF areas.