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CISSP · Question #944
CISSP Question #944: Real Exam Question with Answer & Explanation
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Submitted by rania.sa· Mar 5, 2026Communication and Network Security
Question
A post-implementation review has identified that the Voice Over Internet Protocol (VoIP) system was designed to have gratuitous Address Resolution Protocol (ARP) disabled. Why did the network architect likely design the VoIP system with gratuitous ARP disabled?
Options
- AGratuitous ARP requires the use of Virtual Local Area Network (VLAN) 1.
- BGratuitous ARP requires the use of insecure layer 3 protocols.
- CGratuitous ARP requires the likelihood of a successful brute-force attack on the phone.
- DGratuitous ARP requires the risk of a Man-in-the-Middle (MITM) attack.
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Topics
#gratuitous ARP#Man-in-the-Middle (MITM)#VoIP security#network protocols