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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Networking | 20% | - Network hardware and devices - IP addressing and subnetting basics - Network connectivity - Network protocols and services - Network troubleshooting - Network configurations |
| Topic 2: Mobile Devices | 15% | - Mobile device configuration - Mobile device management (MDM) - Mobile device synchronization - Mobile device troubleshooting - Cellular connectivity and settings |
| Topic 3: Virtualization and Cloud Computing | 12% | - Cloud concepts and models (IaaS, PaaS, SaaS) - Virtualization fundamentals - Cloud and virtualization troubleshooting - Virtual machine concepts - Cloud connectivity and configuration |
| Topic 4: Hardware | 27% | - Power supplies and connectors - RAM types and installation - Storage devices (HDD, SSD, NVMe) - CPU and expansion cards - Peripheral devices and connections - BIOS/UEFI and firmware - PC hardware and peripherals |
| Topic 5: Hardware and Network Troubleshooting | 26% | - Common symptoms and root causes - Hardware troubleshooting - Printers and multifunction devices - Troubleshooting methodology - Network troubleshooting - Mobile device troubleshooting |
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NEW QUESTION # 651
A technician receives several complaints from the same office about VoIP calls sounding broken up, being difficult to hear, and having lagging audio. The technician arrives on-site and runs an internet speed test on several wired and wireless computers. Internet speed seems normal throughout the office. Which of the following should the technician do to fix the call issues?
Answer: D
Explanation:
Quality of Service (QoS) prioritizes VoIP traffic on the network, reducing jitter, latency, and packet loss to improve call quality.
NEW QUESTION # 652
A technician receives a tablet that looks like it has a bulge inside. The bulge is pushing the screen away from the backplate. The tablet still turns on when it is plugged in, but the screen looks damaged and turns off when unplugged.
Which of the following is the most likely cause of this issue?
Answer: B
Explanation:
A bulging tablet casing is a classic sign of as wollen lithium-ion battery, often caused by age, overheating, or overcharging. This is a dangerous condition, as swollen batteries can rupture or catch fire. It also explains why the tablet only works when plugged in -- the battery is no longer holding a charge.
NEW QUESTION # 653
A user is setting up a gaming PC with multiple GPUs to play highly advanced games. The user's primary concern is that the power supply is sufficient to support these tasks while allowing for future upgrades. Which of the following power supply configurations should the user select?
Answer: C
Explanation:
For a gaming PC with multiple GPUs, the power supply must safely deliver high current on the 12V rails, since GPUs and CPUs draw most of their power from 12V. A multiple-rail power supply divides the 12V output into separate rails protected by overcurrent protection (OCP). This configuration helps prevent a single rail from being overloaded and can provide safer distribution when several high-draw components (multiple GPUs, high-end CPU) are installed. From a CompTIA A+ Core 1 perspective, selecting PSU characteristics that match system load and expansion needs is key, and multi-rail designs are directly related to supporting multiple high-power devices with better protection controls.
The other options do not meet the goal. Redundant PSUs are typically used in servers for uptime, not consumer gaming builds, and they don't inherently address GPU power distribution. Non-modular only affects cable management and airflow, not power capability or scalability. Low wattage directly conflicts with the requirement for multi-GPU performance and future upgrades. Therefore, the best choice given is multiple-rail.
NEW QUESTION # 654
A technician is replacing a failed power supply in a ten-year-old computer When installing the customer-provided power supply, the technician discovers the ATX connector would not plug into the motherboard. The customer wants a cost-effective solution. Which of the following should the technician do next?
Answer: C
Explanation:
Older motherboards use 20-pin connectors, while newer power supplies use 24-pin connectors.
An adapter resolves the compatibility issue cost-effectively.
NEW QUESTION # 655
Which of the following devices can provide combined data and power to hardwired VoIP phones in a small office?
Answer: A
Explanation:
A PoE switch supplies both electrical power and network connectivity over Ethernet cables, allowing VoIP phones to operate without separate power adapters while maintaining data communication.
NEW QUESTION # 656
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