220-1201 Leak Questions

Identifying changes made to the system is the next step to troubleshoot why an application no longer launches, as recent changes often cause such issues.

Why Not A (Research the symptoms): Research is broader and should come after identifying changes.

Why Not C (Determine which steps need to be performed): This comes after identifying the issue.

Why Not D (Check the vendor ' s website): This is a later step if further guidance is needed.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 3.1, troubleshooting methodology​.

NVMe (Non-Volatile Memory Express) drives commonly use the M.2 interface and provide the highest performance for SSDs.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.2 – Storage devices:

“NVMe drives connect via the M.2 slot and provide the fastest data transfer rates available for storage devices.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Storage Technologies

CompTIA Exam Objectives 220-1101, Domain 3.2

A Lightning cable provides the best connectivity performance when you want strong, stable connectivity while keeping required accessories to a minimum. In a mobile troubleshooting and connectivity context, this refers to USB tethering from an iPhone to another device (such as a laptop). Wired tethering typically offers higher throughput, lower latency, and better stability than wireless tethering methods because it avoids Wi-Fi interference, signal loss, and radio congestion. It also reduces configuration variables—once the cable is connected and tethering is enabled, the connection is generally consistent and less prone to dropouts than wireless options.

A hotspot can provide good performance, but it relies on Wi-Fi and is more susceptible to interference and distance, and it also increases battery drain. Bluetooth tethering works with minimal setup but is usually the slowest option and is best suited for low-bandwidth needs. NFC is used for short-range pairing or tap-to-connect actions and does not provide an internet data connection by itself. Therefore, the best option for performance with limited accessories is using a Lightning cable.

Certificate security warnings commonly occur when a system cannot properly validate the validity period of an SSL/TLS certificate. According to CompTIA Core 1 (220-1201) networking and security fundamentals, two of the most common causes of certificate errors are expired certificates and incorrect system date and time.

After a power outage, systems without internet access cannot automatically synchronize time with an NTP server. If the system clock resets or becomes inaccurate, the browser may interpret a valid certificate as expired or not yet valid, triggering an “insecure site” warning. Setting the correct system date and time in the BIOS immediately resolves this mismatch and is a primary troubleshooting step.

Additionally, renewing the SSL certificate resolves errors if the certificate has legitimately expired or was invalid at the time of access. This is especially relevant for internal network services using self-signed or internally managed certificates.

Replacing the CMOS battery can prevent future time resets but does not immediately correct the certificate error. Adjusting browser security settings is unsafe and not recommended. Firewall port configuration and network scanning are unrelated to certificate validation.

CompTIA emphasizes validating time/date accuracy and certificate status as core steps when resolving certificate-related security warnings.