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Answer: TCP proxy load balancer
The company requires end-to-end encryption for SMTP and IMAP services, which use SSL/TLS on specific ports (e.g., 465 for SMTP, 993 for IMAP). Since they do not have access to SSL certificates, the load balancer must support SSL passthrough without terminating the SSL connection. The TCP Proxy Load Balancer (D) is designed for this scenario, as it can handle SSL/TLS traffic on specific ports without requiring the certificates. It is also a global load balancer, which is ideal for the company's globally distributed users. The other options either require SSL termination (A and C) or are not suitable for global traffic (B).
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Your company has expanded its EMEA operations to APAC, and globally distributed users are experiencing slow SMTP and IMAP services. The requirement is end-to-end encryption, but SSL certificates are not accessible.
Which Google Cloud load balancer type should you deploy in this scenario?
A
SSL proxy load balancer
B
Network load balancer
C
HTTPS load balancer
D
TCP proxy load balancer