A network administrator is considering implementation of network access restrictions based upon layer two addressing information. Which of the following describes this method of network restrictions?

The correct answer is A. MAC filtering. Layer 2 of the OSI model is the Data Link layer, which uses MAC (Media Access Control) addresses for device identification on a local network segment. MAC filtering controls network access by permitting or denying devices based on their hardware MAC address. Port filtering…

Network security

Question

Options

AMAC filtering
BPort filtering
CIP filtering
DACL filtering

How the community answered

(30 responses)

A
93% (28)
B
3% (1)
D
3% (1)

Explanation

Layer 2 of the OSI model is the Data Link layer, which uses MAC (Media Access Control) addresses for device identification on a local network segment. MAC filtering controls network access by permitting or denying devices based on their hardware MAC address. Port filtering operates at Layer 4 (Transport) using TCP/UDP port numbers. IP filtering operates at Layer 3 (Network) using IP addresses. ACL filtering is a general term that can apply at multiple layers. Since the question specifies Layer 2 addressing, MAC filtering is the correct answer.

Topics

#MAC filtering#layer 2 security#network access control

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