ANS-C01 Network Implementation Practice Question
Which THREE of the following are considerations when designing a Direct Connect implementation for high availability? (Choose three.)
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that high bandwidth alone or static routes provide high availability, but the key is dynamic routing with BGP and redundant physical connections to separate locations.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use BGP to advertise the same prefixes over both connections.
Using BGP to advertise the same prefixes over both Direct Connect connections enables active-active or active-passive load balancing and automatic failover. BGP’s route selection and AS_PATH prepending allow you to control traffic flow, ensuring that if one connection fails, the other continues to advertise the same prefixes, maintaining connectivity without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a single connection with high bandwidth.
Why it's wrong here
Single point of failure.
- ✗
Configure static routes to the on-premises network.
Why it's wrong here
Static routes do not provide automatic failover; BGP is preferred.
- ✓
Use BGP to advertise the same prefixes over both connections.
Why this is correct
Enables automatic failover.
- ✓
Use two or more Direct Connect connections.
Why this is correct
Redundancy requires multiple connections.
- ✓
Connect to different Direct Connect locations.
Why this is correct
Diverse paths avoid shared failure.
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