JN0-281 Exam Dumps | MACsec provides protection against which two types of threats? (Choose two.)

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Data Center, Associate (JNCIA-DC)
Juniper.JN0-281.v2025-08-18.q93
Question 91

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Question 91/93

MACsec provides protection against which two types of threats? (Choose two.)

A. Data decryption

B. Playback attacks

C. Hashing attacks

D. Man-in-the-middle attack

Correct Answer: B,D

MACsec (Media Access Control Security) provides data confidentiality, integrity, and origin authenticity at Layer 2, protecting against several types of threats.
Step-by-Step Breakdown:
Man-in-the-Middle Attack Protection:
MACsec encrypts traffic at Layer 2, preventing man-in-the-middle attacks where an attacker intercepts and manipulates traffic between two communicating devices. Since the data is encrypted, any intercepted packets are unreadable.
Protection Against Playback Attacks:
MACsec also protects against playback attacks by using sequence numbers and timestamps to ensure that old, replayed packets are not accepted by the receiver.
Juniper Reference:
MACsec Configuration: Juniper devices support MACsec for securing Layer 2 communications, ensuring protection against replay and man-in-the-middle attacks in sensitive environments.

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