Question Q-5487 A user reports that their Android smartphone shows "SIM not…
1 comment · last active May 19, 2026
CompTIA A+ Core 1 220-1201 - Domain 1 Mobile Devices
By Jordan Blake · Updated May 25, 2026
| Questions | 25 |
| Passing Score | 75% |
| Format | 100% Multiple Choice |
| Sessions Logged | 559 |
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Uncategorized25 questions
Discussion
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Thunderbolt/USB-C with PD is the only answer when they want 4K + charge in one cable. DisplayPort alone won't charge the laptop.
OLED = per-pixel off = true black. IPS is great angles but still backlight bleed on cheap panels.
+1 votes
Lid flicker + external HDMI fine = hinge cable 99% of the time. I've replaced three LVDS cables this year alone.
IMAP vs POP3 on mobile: they want folder sync + local storage — that's IMAP. POP3 pulls and often deletes from server.
MDM = remote policy, Wi-Fi profiles, remote wipe. Intune, Workspace ONE, etc. BYOD vs COPE is policy — MDM is the tool.
+1 votes
Soldered RAM = no field upgrade. Ultrabooks are basically replace-the-board-or-replace-the-laptop territory.
+2 votes
Touch not working after screen swap = digitizer cable left unplugged. Display can work fine without touch layer connected.
Selective wipe removes corporate container/data on BYOD without nuking personal photos. Full wipe is for COPE/company-owned.
+1 votes
Question catalog for this preview
Catalog listing of the 5 preview questions for this quiz.
Question 1
Which of the following BEST describes the difference between a BYOD and COPE mobile device policy?
Explanation
BYOD (Bring Your Own Device) = employee-owned device used for work. COPE (Corporate-Owned, Personally-Enabled) = company-owned device provided to the employee who may also use it personally. Both typically require MDM.
Question 2
A company issues iPhones to employees. The IT department wants to remotely enforce screen lock policies, push Wi-Fi profiles, and wipe lost devices. Which technology should be implemented?
Explanation
MDM (Mobile Device Management) solutions allow IT to remotely manage, configure, monitor, and wipe mobile devices. They can push policies (screen lock, encryption, VPN settings) and configurations enterprise-wide.
Question 3
A user wants to connect their laptop to an external 4K display using a single cable that also charges the laptop. Which connector type BEST supports this requirement?
Explanation
Thunderbolt 3 and USB4 over USB-C support DisplayPort Alt Mode (4K/8K video output), USB data, and Power Delivery (charging) over a single cable — meeting all three requirements simultaneously.
Question 4
Which of the following display technologies found in laptops produces DEEPER blacks and HIGHER contrast ratios by allowing individual pixels to be turned off completely?
Explanation
OLED displays emit light per-pixel and can turn individual pixels completely off, achieving true black and infinite contrast ratios. IPS offers wide viewing angles but uses a backlight. TN is fast but has poor viewing angles.
Question 5
A technician is setting up email on an iOS device for a user who wants email stored locally on the device (not deleted from server) and needs folder synchronization. Which email protocol is MOST appropriate?
Explanation
IMAP (Internet Message Access Protocol) keeps email on the server and synchronizes folder states across multiple devices. POP3 downloads and typically deletes from the server. SMTP is for sending, not receiving. SNMP is a network management protocol.
SIM not provisioned usually means the carrier hasn't activated the line on that SIM yet — not a phone hardware fault.