JN0-1103: Design, Associate (JNCIA-Design)

Postman is used to create and prototype API requests and to interact with APIs that integrate network infrastructure with cloud applications. Postman scripts use JavaScript, while unsolicited real-time updates without polling require an event-driven mechanism such as webhooks rather than Postman.

rsync efficiently synchronizes changed files and is commonly used for recurring backups. SFTP provides secure file transfer to a backup location. SMTP handles email delivery, while SNMP supports network monitoring and management rather than backup transfer.

IPsec NAT Traversal carries IPsec ESP inside UDP and adds a non-IKE marker, on top of the normal IPsec encapsulation. This additional encapsulation increases packet overhead relative to IPsec without NAT Traversal and the other listed protocols.

A −65 dBm RSSI threshold is a standard WLAN planning value for defining usable cell coverage and managing separation between access points. Designing same-channel AP placement around this level helps limit excessive co-channel overlap while preserving reliable client coverage.

CASBs provide visibility into cloud application use, including discovery of unsanctioned services, and support compliance assessments and governance of cloud services. Redundancy and performance are not core CASB functions.