The correct combination is SMTP, POP3, and HTTP. SMTP handles all outgoing email from desktop clients like Outlook, while POP3 retrieves incoming messages and stores them locally, making it ideal for a single-device setup. HTTP (or HTTPS) enables web browser access to the same mailbox, allowing employees to check email without a dedicated client. On the CompTIA A+ Core 1 220-1201 exam, this question tests your ability to match each protocol to its specific role: SMTP for sending, POP3 or IMAP for receiving, and HTTP for webmail. A common trap is confusing IMAP with POP3—remember that IMAP keeps messages on the server for multi-device sync, while POP3 downloads and removes them, which is simpler for a small business with one desktop per user. For the exam, think of the mnemonic “S-P-H” for Send, Pull, and HTTP, and always pair SMTP with a retrieval protocol plus web access when browser-based email is required.
220-1201 Network Protocols Practice Question
This 220-1201 practice question tests your understanding of network protocols. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 configuring a new email server for a small business. Employees need to send and receive email from their desktop clients (Outlook) and also access email via a web browser. Which combination of protocols should the technician configure on the server to support both client types?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SMTP, POP3, and HTTP
This question tests knowledge of email protocols: SMTP for sending, POP3/IMAP for receiving, and HTTP/HTTPS for webmail. The correct combination is SMTP (for sending from clients) and either POP3 or IMAP (for receiving), plus HTTP/HTTPS for web access.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
SMTP, POP3, and HTTP
Why this is correct
SMTP sends email, POP3 receives it on clients, and HTTP provides webmail access.
Related concept
Static NAT maps one inside address to one outside address.
✗
FTP, SMTP, and DNS
Why it's wrong here
FTP is for file transfers, DNS for name resolution; neither handles email receiving or webmail.
✗
IMAP, SNMP, and HTTPS
Why it's wrong here
SNMP is for network management, not email; IMAP receives but SMTP is missing for sending.
✗
DHCP, SMTP, and POP3
Why it's wrong here
DHCP assigns IP addresses, not relevant to email; webmail access requires HTTP/HTTPS.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Network Protocols — This question tests Network Protocols — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: SMTP, POP3, and HTTP — This question tests knowledge of email protocols: SMTP for sending, POP3/IMAP for receiving, and HTTP/HTTPS for webmail. The correct combination is SMTP (for sending from clients) and either POP3 or IMAP (for receiving), plus HTTP/HTTPS for web access.
What should I do if I get this 220-1201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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