Cisco
300-415 · Question #207
300-415 Question #207: Real Exam Question with Answer & Explanation
The correct answer is B: sla-class TRANSACTIONAL_DATA loss 5 latency 50 jitter 100 ! sla-class REALTIME loss 2 latency 100 jitter 30 !. The provided SLA classes for REALTIME and TRANSACTIONAL_DATA in the app-route-policy are unrealistically high for loss, and Option B corrects these values to typical industry standards.
Policies
Question
policy
sla-class BULK_DATA
loss 20
latency 300
jitter 100
!
sla-class TRANSACTIONAL_DATA
loss 15
latency 50
jitter 100
!
sla-class REALTIME
loss 20
latency 100
jitter 30
!
app-route-policy VPN-10_MPLS_AND_INET_SITES
vpn-list VPN-10
sequence 1
match
dscp 46
!
action
backup-sla-preferred-color biz-internet
sla-class REALTIME preferred-color private1
!
!
sequence 11
match
dscp 34
!
action
backup-sla-preferred-color biz-internet
sla-class TRANSACTIONAL_DATA preferred-color private1
!
!
sequence 21
match
dscp 24
!
action
backup-sla-preferred-color biz-internet
sla-class TRANSACTIONAL_DATA preferred-color private1
!
!
!
Which configuration completes the policy so that it works for all locations?
Options
- Asla-class BULK_DATA loss 15 latency 100 jitter 100 ! sla-class TRANSACTIONAL_DATA loss 10 latency 300 jitter 100 !
- Bsla-class TRANSACTIONAL_DATA loss 5 latency 50 jitter 100 ! sla-class REALTIME loss 2 latency 100 jitter 30 !
- Csla-class TRANSACTIONAL_DATA loss 2 latency 100 jitter 100 ! sla-class REALTIME loss 15 latency 100 jitter 100 !
- Dsla-class BULK_DATA loss 10 latency 300 jitter 100 ! sla-class REALTIME loss 2 latency 100 jitter 30 !
Explanation
The provided SLA classes for REALTIME and TRANSACTIONAL_DATA in the app-route-policy are unrealistically high for loss, and Option B corrects these values to typical industry standards.
Common mistakes.
- A. Option A increases the latency requirement for 'TRANSACTIONAL_DATA' from 50ms to 300ms, which is detrimental and inappropriate for transactional applications.
- C. Option C increases the latency for 'TRANSACTIONAL_DATA' from 50ms to 100ms and significantly degrades the 'REALTIME' class by increasing its loss to 15% and jitter to 100ms, making it unsuitable.
- D. While Option D correctly lowers the 'REALTIME' loss, it also modifies 'BULK_DATA', which is not utilized in the provided 'app-route-policy', and does not address the high loss value for 'TRANSACTIONAL_DATA' which is used.
Concept tested. Cisco SD-WAN SLA Class Definition and Optimization
Topics
#SD-WAN#Application-Aware Routing#SLA Class#QoS
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