Designing for Cisco Internetwork Solutions (DESGN, legacy) — Question 49

When designing a WAN backup for voice and video applications, what three types of connections should be used? (Choose three.)

Answer options

• A. Private WAN
• B. internet
• C. ISDN
• D. MPLS
• E. dial-up
• F. ATM
• G. DSL

Correct answer: A, C, D

Explanation

The correct options A (Private WAN), C (ISDN), and D (MPLS) are suitable for ensuring reliable and high-quality connections for voice and video traffic. Options B (internet), E (dial-up), F (ATM), and G (DSL) may not provide the necessary quality or reliability for these applications, making them less suitable for WAN backups focused on voice and video.