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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Virtualization and Cloud Computing | 12% | - Cloud and virtualization troubleshooting - Cloud concepts and models (IaaS, PaaS, SaaS) - Cloud connectivity and configuration - Virtual machine concepts - Virtualization fundamentals |
| Topic 2: Networking | 20% | - Network protocols and services - Network connectivity - Network configurations - IP addressing and subnetting basics - Network hardware and devices - Network troubleshooting |
| Topic 3: Hardware | 27% | - BIOS/UEFI and firmware - CPU and expansion cards - Peripheral devices and connections - RAM types and installation - Power supplies and connectors - Storage devices (HDD, SSD, NVMe) - PC hardware and peripherals |
| Topic 4: Hardware and Network Troubleshooting | 26% | - Troubleshooting methodology - Mobile device troubleshooting - Hardware troubleshooting - Common symptoms and root causes - Printers and multifunction devices - Network troubleshooting |
| Topic 5: Mobile Devices | 15% | - Mobile device synchronization - Mobile device troubleshooting - Mobile device management (MDM) - Mobile device configuration - Cellular connectivity and settings |
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57. Frage
A company implements a new policy that prohibits users from installing unapproved applications on corporate tablets. Which of the following should the technician use to enforce this policy?
Antwort: C
Begründung:
Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Official Study Guide) Mobile Device Management (MDM) is the technology used by organizations to centrally configure, secure, and control mobile devices such as smartphones and tablets.
The CompTIA A+ Core 1 (220-1201) objectives specify that MDM solutions allow administrators to implement and enforce security and usage policies, including:
Application control (whitelisting and blacklisting)
Restricting installation of unapproved applications
Enforcing corporate compliance requirements
Remotely managing mobile device configurations
This directly applies to the scenario: the company wants to prevent users from installing unapproved apps on corporate tablets.
MDM enforces this through:
App whitelisting → only approved apps can be installed
App blacklisting → specific apps are blocked
Locked-down app stores → only corporate-approved app stores or catalogs This is exactly the function MDM is designed for in enterprise mobile security and management.
Why the Other Options Are Incorrect
B . ACL (Access Control List)
ACLs control network or file-system access, such as allowing or denying IP addresses, ports, or file permissions.
They cannot control app installation behavior on mobile devices.
C . DRM (Digital Rights Management)
DRM protects digital content from unauthorized copying or distribution.
It does not restrict which applications can be installed on a mobile device.
D . PAM (Privileged Access Management)
PAM controls administrative or privileged accounts in enterprise environments.
It is unrelated to app-installation restrictions on tablets.
58. Frage
A technician is troubleshooting a computer that has random BSOD alerts and intermittently freezes during normal use. Performance degrades as the day goes on. No new software or hardware changes have been implemented. Freezing occurs under performance-intensive operations. Which of the following hardware components is most likely at fault?
Antwort: D
Begründung:
Comprehensive and Detailed Step-by-Step
Random BSODs (Blue Screen of Death), intermittent freezing, and degraded performance under load are common symptoms of failing or faulty RAM (Random Access Memory). Here's the reasoning:
RAM Module (Correct Answer):
Faulty or failing RAM can cause random BSODs due to memory errors when the system attempts to read or write to corrupted memory locations.
Intermittent freezing, especially under performance-intensive operations, can occur because the CPU relies heavily on RAM for active processing tasks.
Over time, heat generated during usage can exacerbate RAM instability, leading to progressively worse performance throughout the day.
Solution: The technician should run a memory diagnostic tool, such as Windows Memory Diagnostic or MemTest86, to confirm if the RAM is at fault.
Incorrect Options:
A . Video Card: A faulty video card can cause graphical glitches, screen artifacts, or crashes, but it is unlikely to cause system-wide performance degradation and random freezing under normal operations unless the issue is specific to GPU-intensive tasks (e.g., gaming or video rendering).
B . HDD: A failing hard drive can cause system slowdowns and freezing, but it typically produces other symptoms such as read/write errors, boot failures, or clicking sounds. HDD issues do not usually cause BSODs unless critical system files are corrupted.
D . TPM (Trusted Platform Module): A TPM is a hardware-based security module used for encryption and secure authentication. It does not affect performance or cause BSODs or freezing under normal operation.
Key Takeaway:
The symptoms described (random BSODs, intermittent freezing, and degraded performance under load) are most likely caused by faulty or failing RAM. Memory diagnostic tools should be used to confirm the issue.
59. Frage
Which of the following is an isolated virtual machine?
Antwort: C
Begründung:
A sandbox is an isolated virtual environment, often used for testing code or software safely without affecting the host system.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.7 - Virtualization:
"A sandbox provides an isolated environment, often implemented as a virtual machine, to safely test applications or code." Verified Source:
* CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Virtualization
* CompTIA Exam Objectives 220-1101, Domain 3.7
60. Frage
While using a laptop and Bluetooth headset for conference calls, a user notices intermittent sound issues. The user frequently walks between office rooms during calls, leaving the laptop in place. The office network uses fiber internet and has two connected APs. What is the MOST likely cause?
Antwort: D
Begründung:
Bluetooth audio issues are typically related to distance and signal strength, not internet connectivity or Wi-Fi access points. Bluetooth devices-especially headsets-generally have a limited effective range of around 10 meters (33 feet) for Class 2 Bluetooth, which is common in consumer laptops and headsets. When the user leaves the room and walks into adjacent offices, they are likely moving beyond the optimal Bluetooth range or passing through walls that weaken the signal.
CompTIA A+ highlights that Bluetooth uses low-power radio frequencies easily disrupted by physical obstructions, distance, and interference. Since the laptop remains stationary and the user moves, the headset becomes progressively further from the laptop, causing intermittent audio dropouts, stuttering, or loss of connection.
The number of APs (A) is irrelevant because the headset is not using Wi-Fi. Mesh mode (C) applies only to wireless AP-to-AP communication. The internet connection (D) is high-quality fiber and conference calls work fine when stationary, so the issue is not bandwidth or WAN throughput.
Thus, the most likely cause is that the user is moving in and out of Bluetooth range.
61. Frage
Which of the following networking devices will most likely need to be installed in between the ISP running DOCSIS and the LAN in a SOHO environment?
Antwort: D
Begründung:
Comprehensive and Detailed Step-by-Step
To determine the correct device, we need to understand how a DOCSIS (Data Over Cable Service Interface Specification) network functions in a Small Office/Home Office (SOHO) environment:
C . Cable Modem:
A cable modem is required to convert the signal provided by the ISP (Internet Service Provider) over a DOCSIS network into a format that is usable by the local area network (LAN).
DOCSIS is a standard for high-speed internet over cable television infrastructure, and the cable modem acts as the gateway between the ISP's coaxial network and the LAN.
Without the cable modem, devices in the LAN would not be able to access the internet.
Reference:
Incorrect Options:
A . Switch:
A switch is used to connect multiple devices within the LAN. It does not connect the LAN to the ISP's DOCSIS network.
B . Firewall:
While firewalls provide security by managing inbound and outbound traffic, they do not serve as the interface between the ISP and LAN.
D . Router:
A router directs traffic between different networks (e.g., between a LAN and the internet). However, in a DOCSIS network, the cable modem is the device that first connects to the ISP. Many modern cable modems also include built-in routers, but the modem is the primary device needed.
E . Access Point:
An access point provides wireless connectivity within the LAN. It does not connect directly to the ISP or handle DOCSIS signals.
Key Takeaway:The correct device required to interface between the ISP's DOCSIS network and the SOHO LAN is the cable modem.
62. Frage
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