ITPEC IP April 2025 Question 30
ITPEC IP April 2025 — Question 30 of 100
All devices must connect on the router's LAN side, with the Internet alone on the WAN side — then every Internet path crosses the firewall.
In option (a), the three PCs and TV are connected through the hub or directly to LAN ports. The router's WAN port is the only connection to the Internet, so traffic between any internal device and the Internet passes through the router's firewall.
Answer (a)
Why not others:
- (b) places the hub and TV on the WAN side, bypassing protection for the TV
- (c) places one PC and the TV on an Internet-side hub
- (d) connects the TV directly to the WAN side and the hub directly to the Internet, creating unprotected paths
Key rule: A perimeter firewall protects all devices only when every external route passes through it and internal devices remain behind its LAN interface.
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