ITPEC IP April 2023 Question 31
ITPEC IP April 2023 — Question 31 of 100
A firewall is placed at a network boundary to control traffic and prevent unauthorized access between external and internal networks. It examines connection information or application data according to security rules, permits authorized communication, and blocks disallowed traffic. Firewalls can be implemented in network devices, hosts, or cloud services.
Answer (d)
Why not others:
- (a) DHCP server automatically supplies IP configuration to clients
- (b) Search engine indexes information and helps users find content
- (c) Switching hub forwards local Ethernet frames between ports and does not by itself enforce the boundary security policy described
Key rule: A firewall filters traffic across trust boundaries; DHCP configures hosts and switches connect devices within networks.
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