Quick Answer
The answer is HTTP, as proxy servers primarily use the HTTP protocol to forward client requests to external web servers. Acting as an intermediary, the proxy receives internal HTTP requests, then opens a new HTTP connection to the destination server on the internet to retrieve the resource. On the CompTIA A+ Core 1 220-1201 exam, this concept tests your understanding of how proxy servers bridge internal and external traffic, often appearing in troubleshooting scenarios where internal access works but external sites fail—a common trap is confusing the client-to-proxy protocol (which could be HTTP or HTTPS) with the proxy-to-internet protocol. Remember that while HTTPS forwarding is possible for encrypted traffic, the default and most commonly tested protocol for a proxy’s outbound communication is HTTP. A helpful memory tip: “Proxy to the web? HTTP’s the bet.”
This 220-1201 practice question tests your understanding of network protocols. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A technician is troubleshooting a network where users can access internal resources but cannot reach any external websites. The internal network uses a proxy server. The technician finds that the proxy server is configured to use a specific protocol to forward requests to the internet. Which protocol is the proxy server most likely using to communicate with external web servers?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
FTP
Why wrong: FTP is for file transfers, not for forwarding web requests from a proxy.
DNS
Why wrong: DNS resolves names, but the proxy uses it separately; the forwarding protocol is HTTP/HTTPS.
HTTP
HTTP is the protocol used by proxy servers to forward web requests to external servers.
SNMP
Why wrong: SNMP is for network management, not for forwarding web traffic.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
HTTP
This question tests understanding of proxy servers and HTTP/HTTPS forwarding. A proxy server typically uses HTTP or HTTPS to forward client requests to external web servers, acting as an intermediary. The scenario implies the proxy is working internally but failing externally, pointing to the protocol used for external communication.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
FTP
Why it's wrong here
FTP is for file transfers, not for forwarding web requests from a proxy.
DNS
HTTP
Why this is correct
HTTP is the protocol used by proxy servers to forward web requests to external servers.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
SNMP
Why it's wrong here
SNMP is for network management, not for forwarding web traffic.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Network Protocols — study guide chapter
Learn the concepts, then practise the questions
Network Protocols practice questions
Targeted practice on this topic area only
All 220-1201 questions
1,020 questions across all exam domains
CompTIA A+ Core 1 220-1201 study guide
Full concept coverage aligned to exam objectives
220-1201 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise 220-1201 questions linked to Mobile Device Hardware Servicing.
Practise 220-1201 questions linked to Mobile Device Connection Methods.
Practise 220-1201 questions linked to Mobile Device Accessories.
Practise 220-1201 questions linked to Mobile Device Network Connectivity.
Practise 220-1201 questions linked to Mobile Device Application Support.
Practise 220-1201 questions linked to Network Protocols.
Practise 220-1201 questions linked to TCP & UDP Ports.
Practise 220-1201 questions linked to Wireless Networking Technologies.
Practise 220-1201 questions linked to Network Services.
Practise 220-1201 questions linked to Network Configuration Concepts.
Practise 220-1201 questions linked to Common Networking Hardware.
Practise 220-1201 questions linked to IP Addressing.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Network Protocols — This question tests Network Protocols — Read the scenario before looking for a memorised answer..
The correct answer is: HTTP — This question tests understanding of proxy servers and HTTP/HTTPS forwarding. A proxy server typically uses HTTP or HTTPS to forward client requests to external web servers, acting as an intermediary. The scenario implies the proxy is working internally but failing externally, pointing to the protocol used for external communication.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
Last reviewed: Jun 18, 2026
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.