A network security engineer is reviewing security logs and notices an unauthorized device sending authenticated messages that occurred during a previous M2M session. Which basic security service would protect against this type of incident?

IT Questions BankCategory: IoT SecurityA network security engineer is reviewing security logs and notices an unauthorized device sending authenticated messages that occurred during a previous M2M session. Which basic security service would protect against this type of incident?

A network security engineer is reviewing security logs and notices an unauthorized device sending authenticated messages that occurred during a previous M2M session. Which basic security service would protect against this type of incident?

  • message confidentiality
  • access control
  • replay protection
  • message integrity

Explanation: There are four basic security services performed at the data link layer:
• Access control – prevents unauthorized devices from joining the network
• Message integrity – protects against alteration of data while it is in transit
• Message confidentiality – prevents threat actors from reading the transmitted data
• Replay protection – prevents threat actors from successfully capturing legitimate messages and sending them out on the network at a later time

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