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| Section | Weight | Objectives |
|---|---|---|
| Virtualization and Cloud Computing | 11% | - Cloud computing concepts
|
| Networking | 20% | - Network fundamentals
|
| Mobile Devices | 15% | - Mobile device hardware and components
|
| Hardware and Network Troubleshooting | 29% | - Troubleshooting methodology
|
| Hardware | 25% | - PC hardware components
|
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質問 # 207
Which of the following networking hardware devices is primarily used to connect different network segments and forward data based on MAC addresses?
正解：C
解説：
A switch is the device that primarily forwards traffic based on MAC addresses and is used to connect devices within the same local network. It operates at Layer 2 (Data Link) of the OSI model. When a switch receives an Ethernet frame, it reads the source MAC address and records it in its MAC address table along with the port it arrived on. Then, when the switch needs to send a frame to a destination, it looks up the destination MAC address in that table and forwards the frame only out the correct port. This makes switching efficient and reduces unnecessary traffic compared to older hub-based networks. In CompTIA A+ Core 1, recognizing that MAC-based forwarding is a key switch function is essential.
A router forwards traffic based on IP addresses at Layer 3 and is used to connect different IP networks or VLANs. A modem converts signals for ISP connectivity (e.g., cable/DSL/fiber handoff) and does not forward frames by MAC table learning. A firewall filters traffic based on security rules and is not primarily a MAC- forwarding device. Therefore, the best answer is Switch.
質問 # 208
A technician is manually configuring network settings on a user's computer to route network traffic to a newly deployed firewall. Which of the following should the technician change?
正解：A
解説：
Routing network traffic through a firewall requires changing the default gateway so the computer sends outbound traffic to the firewall as the next hop.
質問 # 209
A user receives a warning message on their tablet that states, "You are locked out due to unlawful activity." The user was shopping for clothes online. Which of the following should a technician try first?
正解：A
解説：
Warning messages like this can be caused by malicious pop-ups or temporary software glitches.
Restarting the device is the safest and quickest first step to clear temporary processes, refresh the system, and remove transient malware or pop-up overlays.
This approach addresses the issue without risking data loss or unnecessary downtime.
質問 # 210
A human resources manager printed a sensitive termination document and forgot to retrieve it from the printer. Which of the following prevents this situation?
正解：D
解説：
Secure badging-often used with "pull printing" or "secure print release"-requires users to authenticate at the printer before documents are printed. CompTIA A+ highlights this feature as critical for protecting sensitive data in corporate environments. With badge-based printing, jobs stay in a secure print queue until the authorized user physically scans their badge.
This prevents confidential documents, like HR termination notices, from sitting unattended in the output tray.
It also reduces print waste and ensures accountability for printed materials.
Duplex printing (B) simply prints double-sided pages. Printer sharing (C) allows multiple users to use a printer but does not provide security. Wireless encryption (D) protects network traffic but does not address abandoned print jobs.
Therefore, badging / secure print release is the correct protective measure.
質問 # 211
A systems administrator deploys BitLocker to all devices. However, one of the desktop PCs is not able to encrypt the boot drive. Which of the following should the administrator check?
正解：A
解説：
BitLocker Drive Encryption in Windows requires aTrusted Platform Module (TPM)to encrypt the boot drive securely. The TPM is a dedicated microcontroller designed to secure hardware through integrated cryptographic keys. It validates system integrity during boot and securely stores the encryption keys. If BitLocker cannot find a TPM or it is disabled in BIOS/UEFI, drive encryption cannot proceed.
BitLocker can function without TPM using a USB startup key, but this compromises some security and is not recommended for managed enterprise environments.
Reference:
"CompTIA A+ Certification All-in-One Exam Guide, Eleventh Edition" by Travis Everett and Andrew Hutz - Chapter 13, page 536-537.
"CompTIA A+ Guide to Managing and Troubleshooting PCs" by Mark Soper - Chapter 13, page 446-447.
"CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 1, page 36-38.
質問 # 212
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