Which option is an example of a North-South traffic flow?

The correct answer is C. Client-server interactions that cross the edge perimeter. North-South traffic describes network traffic that flows between internal infrastructure and external networks - crossing the edge or perimeter of a data center or enterprise network (e.g., a user connecting to the internet or an external client reaching a web server)…

Submitted by amina.ke· Apr 18, 2026Network Security

Question

Options

ALateral movement within a cloud or data center
BAn internal three-tier application
CClient-server interactions that cross the edge perimeter
DTraffic between an internal server and internal user

How the community answered

(40 responses)

A
5% (2)
B
3% (1)
C
88% (35)
D
5% (2)

Explanation

North-South traffic describes network traffic that flows between internal infrastructure and external networks - crossing the edge or perimeter of a data center or enterprise network (e.g., a user connecting to the internet or an external client reaching a web server). East-West traffic (also called lateral traffic) describes traffic that moves between servers or services within the same data center or cloud environment. Options A (lateral movement within a cloud/data center), B (internal three-tier application), and D (internal server to internal user) are all examples of East-West traffic because they stay within the internal network boundary.

Topics

#North-South traffic#Network traffic flow#Network perimeter

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