- A
FTP
Why wrong: FTP is for file transfers, not for forwarding web requests from a proxy.
- B
DNS
Why wrong: DNS resolves names, but the proxy uses it separately; the forwarding protocol is HTTP/HTTPS.
- C
HTTP
HTTP is the protocol used by proxy servers to forward web requests to external servers.
- D
SNMP
Why wrong: SNMP is for network management, not for forwarding web traffic.
Question 520 of 1,020
Proxy Server Protocol: HTTP Forwarding for CompTIA A+ 220-1201
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.
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.”
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
HTTP
The proxy server is most likely using HTTP (Hypertext Transfer Protocol) to forward requests to external web servers. Since users are accessing internal resources but cannot reach external websites, the proxy server acts as an intermediary for web traffic. HTTP is the standard protocol for web communication, and proxy servers typically use HTTP (or HTTPS) to forward client requests to internet web servers, as it allows the proxy to cache, filter, and modify web traffic.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
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
Common exam trap: answer the scenario, not the keyword
Candidates may confuse the protocol used for internal client-to-proxy communication (HTTP/HTTPS) with the protocol used for proxy-to-external server communication, or mistakenly think DNS or FTP are used for forwarding web requests. In CompTIA A+, remember that proxy servers use HTTP/HTTPS to forward web requests to external servers.
Detailed technical explanation
How to think about this question
Under the hood, an HTTP proxy server operates at Layer 7 (Application Layer) and uses the CONNECT method for HTTPS tunneling or standard GET/POST requests for HTTP traffic. In real-world scenarios, a misconfigured proxy might block external access if it is set to use an incorrect protocol or if the proxy's upstream connection fails, but the core forwarding mechanism always relies on HTTP/HTTPS to communicate with external web servers. The proxy server typically caches responses and can enforce access policies, but the underlying protocol for outbound web requests remains HTTP.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
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
Related 220-1201 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Mobile Device Hardware Servicing practice questions
Practise 220-1201 questions linked to Mobile Device Hardware Servicing.
Mobile Device Connection Methods practice questions
Practise 220-1201 questions linked to Mobile Device Connection Methods.
Mobile Device Accessories practice questions
Practise 220-1201 questions linked to Mobile Device Accessories.
Mobile Device Network Connectivity practice questions
Practise 220-1201 questions linked to Mobile Device Network Connectivity.
Mobile Device Application Support practice questions
Practise 220-1201 questions linked to Mobile Device Application Support.
Network Protocols practice questions
Practise 220-1201 questions linked to Network Protocols.
TCP & UDP Ports practice questions
Practise 220-1201 questions linked to TCP & UDP Ports.
Wireless Networking Technologies practice questions
Practise 220-1201 questions linked to Wireless Networking Technologies.
Network Services practice questions
Practise 220-1201 questions linked to Network Services.
Network Configuration Concepts practice questions
Practise 220-1201 questions linked to Network Configuration Concepts.
Common Networking Hardware practice questions
Practise 220-1201 questions linked to Common Networking Hardware.
IP Addressing practice questions
Practise 220-1201 questions linked to IP Addressing.
Practice this exam
Start a free 220-1201 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this 220-1201 question test?
Network Protocols — This question tests Network Protocols — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: HTTP — The proxy server is most likely using HTTP (Hypertext Transfer Protocol) to forward requests to external web servers. Since users are accessing internal resources but cannot reach external websites, the proxy server acts as an intermediary for web traffic. HTTP is the standard protocol for web communication, and proxy servers typically use HTTP (or HTTPS) to forward client requests to internet web servers, as it allows the proxy to cache, filter, and modify web traffic.
What should I do if I get this 220-1201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
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
More 220-1201 practice questions
- During a network cable installation, a technician needs to verify that a newly run Cat6 cable is properly terminated and…
- A user connects a 4K monitor to their laptop using a USB-C port. The monitor is detected, but the resolution is stuck at…
- A technician is troubleshooting a laptop that will not charge. The battery is removable, and the power adapter works on…
- A customer brings in a smartphone with a broken charging port. They want the port replaced. During disassembly, the tech…
- A user reports that their laptop's keyboard types random characters when certain keys are pressed. The laptop has not be…
- A technician is troubleshooting a laptop that shuts down randomly after a few minutes of use. The fan is spinning, and t…
Last reviewed: Jul 4, 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.