Designing Cisco Network Service Architectures (ARCH, legacy) — Question 85

While designing a backup BGP solution, a network engineer wants to ensure that a single router with multiple connections prefers the routes from a specific connection over all others. Which BGP path selection attribute is considered first when selecting a route?

Answer options

• A. AS-LENGTH
• B. MED
• C. link bandwidth
• D. WEIGHT

Correct answer: D

Explanation

The WEIGHT attribute is the first criterion BGP considers when determining the preferred route, making it the most important for influencing routing decisions. Although AS-LENGTH, MED, and link bandwidth are relevant attributes in the BGP path selection process, they are evaluated after WEIGHT, thus making them less impactful in this scenario.