Which Technology Uses RTP, SIP, H.323, and SRTP Protocols?
A security administrator needs to create firewall rules for the following protocols: RTP, SIP, H.323. and SRTP. Which of the following does this rule set support?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The question tests your ability to map protocol acronyms to their corresponding technology families, with a common trap of confusing unrelated acronyms like RTOS, SoC, and HVAC.
This exam question asks which technology is supported by firewall rules for RTP, SIP, H.323, and SRTP. Community consensus is unanimous: Voice over IP (VoIP), as these protocols form the core of VoIP and multimedia communications.
The most common wrong answer is picking RTOS, SoC, or HVAC due to acronym confusion, without recognizing that RTP, SIP, H.323, and SRTP are all standard building blocks of VoIP systems.
Community Discussion (3 comments)
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Expert Analysis
Why the Answer Is Correct
VoIP (Voice over Internet Protocol) is the technology that relies on all four listed protocols. RTP (Real-time Transport Protocol) carries audio and video media streams, while SIP (Session Initiation Protocol) handles call setup and teardown. H.323 is an older ITU-T standard for multimedia communication, and SRTP (Secure Real-time Transport Protocol) provides encryption and authentication for RTP streams. Together they enable modern IP telephony and video conferencing.
Why the Other Options Are Wrong
RTOS stands for Real-Time Operating System, an operating system designed for real-time applications, unrelated to call signaling or media transport. SoC (System on Chip) refers to integrating computer components onto a single chip, common in mobile devices. HVAC (Heating, Ventilation, and Air Conditioning) is a building control system. None of these options are associated with the RTP/SIP/H.323/SRTP protocol suite, so they are all distractors testing whether you can identify the correct technology domain.
Community Comment Notes
Comment [1] explicitly outlines each protocol's role in VoIP, noting RTP for media transport, SIP for call control, H.323 for multimedia communication, and SRTP for securing RTP — directly confirming option B. Comment [2] helpfully expands the acronyms for all options, making it clear that RTOS, SoC, and HVAC have no relation to these protocols. Both comments reinforce that the answer is VoIP and that recognition of protocol-to-technology mapping is the core skill being assessed.
Official Reference
Exam Strategy
For protocol-to-technology questions, memorize the common protocol suites associated with each major service (VoIP, IoT, industrial control, etc.). When you see RTP, SIP, H.323, or SRTP together, immediately associate them with VoIP rather than trying to decode each acronym individually.
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