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| Section | Weight | Objectives |
|---|---|---|
| Security | 28% | - Network and application security
|
| Operational Procedures | 21% | - Safety and compliance
|
| Software Troubleshooting | 23% | - Operating system issues
|
| Operating Systems | 28% | - Mobile operating systems
|
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NEW QUESTION # 19
Which of the following is a protocol that provides AAA for network services?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
RADIUS (Remote Authentication Dial-In User Service)provides centralized Authentication, Authorization, and Accounting (AAA) for users who connect and use a network service.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"RADIUS is a widely used protocol for implementing AAA in network environments, allowing centralized control over user access and accounting."
NEW QUESTION # 20
An application's performance is degrading over time. The application is slowing, but it never gives an error and does not crash. Which of the following tools should a technician use to start troubleshooting?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Resource Monitor provides real-time monitoring of system performance and resource usage, including CPU, memory, disk, and network usage. It helps technicians identify performance bottlenecks (e.g., high memory or CPU usage) that can cause slowdowns in applications over time without producing crash errors.
A: Reliability history logs application crashes or errors - not helpful if the app doesn't crash.
B: Computer Management is a broad utility with limited real-time monitoring capability.
D: Disk is too vague - tools like CHKDSK can help with disk errors but not general performance degradation.
Reference:
CompTIA A+ 220-1102 Objective 3.2: Given a scenario, troubleshoot common personal computer issues.
Study Guide Section: System performance tools - Resource Monitor, Task Manager
NEW QUESTION # 21
Users access an internal application through a browser website. When a user is browsing the site a message appears that states it is not safe. The message also displays an Advanced Options button to continue or close the site. During security training, all users were told to close any site that displays this message. Which of the following should the technician do to resolve the issue?
Answer: A
Explanation:
Installing a Secure Sockets Layer certificate ensures the website uses trusted HTTPS encryption, eliminating browser security warnings and allowing users to access the internal application safely without bypassing security alerts.
NEW QUESTION # 22
A utility failure causes a workstation to immediately shut down. Which of the following would help prevent this from reoccurring?
Answer: A
Explanation:
A "utility failure" means the building's AC power source has dropped out (blackout) or sagged severely, causing the workstation to lose power instantly and shut down. The best way to prevent an immediate shutdown during these events is an Uninterruptible Power Supply (UPS), which contains a battery and can continue supplying AC power long enough to keep the PC running briefly and allow a graceful shutdown.
Mike Meyers' Lab Manual states that a UPS "continues to supply AC power...during both brownouts and blackouts via a battery," preventing the computer from instantly losing power when the utility fails. Quentin Docter likewise explains that UPS devices protect against "power sags and even power outages," using stored battery energy so the administrator (or OS integration) can safely shut down rather than crash off.
A surge suppressor protects from spikes, not outages. A redundant PSU only helps if the PSU fails, and Docter notes it cannot keep a system running during a power outage. A line voltage regulator helps stabilize voltage but doesn't provide power when utility power is absent.
References: Quentin Docter - CompTIA A+ Complete Study Guide (UPS vs redundant PSU; UPS protects outages); Travis Everett & Andrew Hutz - CompTIA A+ All-in-One Exam Guide (UPS protects during sag
/outage with battery); Mark Soper - Mike Meyers' A+ Lab Manual (UPS supplies power during brownouts
/blackouts; surge suppressor limits spikes).
NEW QUESTION # 23
A technician is deploying mobile devices and needs to prevent access to sensitive data if the devices are lost.
Which of the following is the best way to prevent unauthorized access if the user is unaware that the phone is lost?
Answer: B
Explanation:
Remote wipe is the best option to prevent unauthorized access to data when a mobile device is lost or stolen- especially if the user is unaware of the loss. It allows administrators or mobile device management (MDM) systems to remotely erase all data on the device, rendering it unusable for unauthorized users.
A). Encryption protects the data, but if the device remains powered and logged in, it may still be accessible.
C). Geofencing can restrict features based on location but does not erase data.
D). Facial recognition helps secure access but can be bypassed in some cases or fail in practical situations.
Reference:
CompTIA A+ 220-1102 Objective 2.2: Compare and contrast security measures and tools.
Study Guide Section: Mobile device security (remote wipe, lockout, MDM tools)
NEW QUESTION # 24
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