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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

During troubleshooting of latency between two EC2 instances that exchange traffic on port 443 inside the same VPC, you notice a sharp increase in duplicate ACKs and packet retransmissions. Under the four-layer TCP/IP model, which layer is responsible for detecting lost segments and initiating their retransmission, and which protocol normally provides that service?

  • Network Access layer - Ethernet

  • Transport layer - TCP

  • Internet layer - IP

  • Application layer - HTTP

ISC2 Systems Security Certified Practitioner (SSCP)
Network and Communication Security
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