CompTIA
CAS-002 · Question #138
CAS-002 Question #138: Real Exam Question with Answer & Explanation
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Question
The VoIP administrator starts receiving reports that users are having problems placing phone calls. The VoIP administrator cannot determine the issue, and asks the security administrator for help. The security administrator reviews the switch interfaces and does not see an excessive amount of network traffic on the voice network. Using a protocol analyzer, the security administrator does see an excessive number of SIP INVITE packets destined for the SIP proxy. Based on the information given, which of the following types of attacks is underway and how can it be remediated?
Options
- AMan in the middle attack; install an IPS in front of SIP proxy.
- BMan in the middle attack; use 802.1x to secure voice VLAN.
- CDenial of Service; switch to more secure H.323 protocol.
- DDenial of Service; use rate limiting to limit traffic.
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