220-1101 Mobile Devices Practice Question
A user's smartphone is connected to a Wi-Fi network but cannot send or receive email. The user can browse the internet using the web browser. Which of the following is the MOST likely cause?
⚠ Common exam trap
CompTIA often tests the distinction between general internet connectivity (which works with basic HTTP/HTTPS) and secure protocol-specific failures (like email or VPN) that depend on accurate system time for certificate validation, leading candidates to mistakenly blame the email server or Wi-Fi signal.
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
✓
The smartphone's date and time settings are incorrect
The smartphone can browse the internet, indicating that the Wi-Fi connection and general internet access are working. Email protocols (IMAP, POP3, SMTP) rely on TLS/SSL certificates for secure connections, and these certificates are validated against the device's system clock. If the date and time are incorrect, the certificate validation fails, preventing the email client from establishing a secure connection to the email server, even though basic web browsing (which may use less strict certificate checks or cached content) still works.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The email server is offline
Why it's wrong here
An email server outage would block connections to that specific mail service, but web browsing relies on separate web servers and protocols. Since the smartphone is connected to Wi-Fi and other internet services like browsing work, the local network and general internet connectivity are functioning. A server-side outage would also affect many users, not just one device, making it an unlikely cause for a device-specific email failure.
- ✓
The smartphone's date and time settings are incorrect
Why this is correct
Incorrect date and time settings on the smartphone cause SSL/TLS certificate validation to fail because the device's clock falls outside the certificate's validity window. Email servers encrypt messages with TLS, so the handshake is aborted before authentication, resulting in a connection failure. Web browsing might still appear to work if the browser accesses sites over plain HTTP or if the user ignores certificate warnings, but email clients enforce certificate checks strictly.
- ✗
The email account password has changed
Why it's wrong here
If the email account password had changed, the server would still complete the TCP and TLS handshake, and only after that reject the user's credentials with an authentication error like 'invalid username/password' or an HTTP 401 status. Most email clients display a specific prompt to re-enter the password, which is a different symptom from a failure to connect. Since web browsing is unaffected, a password issue would not explain a connectivity failure.
- ✗
The Wi-Fi signal is weak
Why it's wrong here
A weak Wi-Fi signal would cause high packet loss, low signal-to-noise ratio, and reduced throughput across all network traffic, including web browsing. The scenario states that web browsing works, which indicates the device has a stable IP connection and adequate signal strength for data transfer. If the signal were too weak for email sync, it would also interrupt HTTP requests, so weak signal cannot be the cause when other services are functional.
Go deeper
Related to this question
Learn chapter
Mobile Email Configuration: POP3, IMAP, Exchange
Key term
Hypertext Transfer Protocol Secure
Hypertext Transfer Protocol Secure, or HTTPS, is the secure version of HTTP that encrypts data between a web browser and a website using SSL/TLS to protect sensitive information like passwords and credit card numbers.
Key term
Post Office Protocol
Post Office Protocol (POP) is a standard internet protocol used by email clients to retrieve email from a remote server and download it to the user's local device.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1101 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 220-1101 exam.