Certified DataPower Gateway v10.x Administrator Advanced Practice Exam: Hard Questions 2025

An organization runs DataPower in containers and must prove that configuration changes are controlled and reproducible. They also need to prevent ad-hoc changes in production while still allowing rapid rollback if a deployment fails. Which approach best satisfies these requirements?

A DataPower gateway cluster is deployed behind a TCP load balancer. During peak traffic, intermittent client failures occur only for long-running back-end calls. Packet captures show client TCP connections are being reset by the load balancer after 60 seconds even though the DataPower service is still processing. Which configuration change is MOST appropriate to mitigate the issue while preserving scalability?

A Multi-Protocol Gateway (MPGW) proxies REST requests to an HTTPS back end. Requests intermittently fail with 403 from the back end only when specific query parameters are present. DataPower logs show the request URI is being normalized and the back end receives a different encoded value than the client sent. What is the BEST fix that preserves security while restoring correct behavior?

A DataPower API Gateway assembly must call two different back-end endpoints depending on a JWT claim value. The JWT is validated successfully, but some requests route to the wrong back end. Investigation finds that the claim is sometimes an array and sometimes a string depending on the identity provider. What is the MOST robust design change in the API assembly?

A service uses an HTTP Front Side Handler (FSH) and connects to a back end using mutual TLS. After a certificate rotation on the back end, DataPower begins failing with an SSL handshake error. The new back-end certificate is signed by a different intermediate CA under the same corporate root CA. What is the MOST correct remediation on DataPower to restore connectivity with minimal trust expansion?

A company enforces strict TLS posture. They want DataPower to accept inbound TLS only with strong ciphers and also require Online Certificate Status Protocol (OCSP) checks for client certificates. During an outage of the OCSP responder, all client connections fail, including high-priority partners. What configuration provides the BEST balance of security and availability?

An MPGW uses an AAA policy to authenticate clients against LDAP. Under load, LDAP latency spikes cause timeouts and thread exhaustion on DataPower, impacting unrelated services. Which design change MOST effectively isolates the impact while keeping authentication centralized?

A DataPower service starts dropping requests during traffic bursts. The appliance is not CPU-saturated, but 'Backside connections in use' is consistently near the maximum and response times climb. The back end supports keep-alive and can handle more concurrent connections. What is the BEST next step to stabilize throughput?

After deploying a new transformation, intermittent failures occur with 'Stylesheet ran out of memory' even though payload sizes are small. The XSLT uses recursive templates and builds large temporary node-sets. Which change is MOST likely to resolve the issue with minimal impact to functional behavior?

A team needs to troubleshoot a sporadic failure where the back end claims DataPower is sending malformed HTTP headers. The issue cannot be reproduced easily, and enabling full payload logging in production is prohibited. What is the MOST appropriate DataPower-based troubleshooting approach?