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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Mobile Devices | 13% | - Network connectivity & configuration - Synchronization & data management - Mobile device security & troubleshooting - Hardware components & replacement |
| Topic 2: Networking | 23% | - Wireless networking standards & security - Network connectivity & troubleshooting - Network types, topologies & cables - Network devices & configuration - IP addressing & protocols |
| Topic 3: Hardware and Network Troubleshooting | 28% | - Troubleshooting methodology - Network issues & resolution - Hardware problems & solutions - Component failure diagnosis & repair |
| Topic 4: Virtualization and Cloud Computing | 11% | - Cloud infrastructure & resource management - Cloud service models & deployment types - Virtualization concepts & hypervisors - Virtual & cloud security |
| Topic 5: Hardware | 25% | - PC components, installation & configuration - Power supply & cooling systems - Peripherals & storage devices - Custom PC builds & specialized hardware - Hardware maintenance & upgrades |
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Mit einem CompTIA 220-1201 Zertifikat kann der Berufstätige in der IT-Branche bessere berufliche Aufstiegschancen haben. Das CompTIA 220-1201 Zertifikat ebnet den Berufstätigen in der IT-Branche den Weg zur erfolgreichen Karriere!
264. Frage
A technician must upgrade a computer system to improve its overall processing performance. Which of the following should the technician focus on to ensure maximum system performance?
Antwort: A
Begründung:
Clock frequency is one of the most significant factors influencing a computer system's processing performance. According to CompTIA Core 1 (220-1201) CPU and performance objectives, clock speed-measured in gigahertz (GHz)-determines how many instruction cycles a processor can perform per second.
Higher clock frequencies generally result in faster execution of instructions, leading to improved performance in both single-threaded and multi-threaded workloads. While modern CPUs also rely on core count, cache size, and architecture efficiency, clock frequency remains a primary metric for evaluating raw processing speed.
An integrated GPU affects graphics performance rather than overall CPU processing capability. Power connectors ensure proper electrical delivery but do not directly improve processing performance. The voltage regulator module (VRM) stabilizes and regulates power supplied to the CPU but does not itself increase processing speed.
CompTIA expects candidates to recognize clock frequency as a key determinant of CPU performance when upgrading or comparing processors.
Reference:
CompTIA A+ Core 1 (220-1201) Official Study Guide - CPU Architecture and Performance
265. Frage
Which of the following records allow a user to navigate to a server by using a memorable title instead of an IPv4 address? (Choose two.)
Antwort: B,E
Begründung:
A CNAME record allows a domain name to act as an alias for another domain, making it easier to access servers using memorable names. An A record maps a human-readable domain name directly to an IPv4 address, enabling users to reach servers without remembering numeric IP addresses.
266. Frage
Users in a 200-person call center report that phone calls experience severe performance degradation on busy days. The technician confirms:
- Upload and download speeds are 50Mbps during a speed test.
- VoIP call prioritization settings are properly configured for the
VLAN that the call center uses.
Which of the following is most likely the cause of this issue?
Antwort: A
Begründung:
Voice over IP (VoIP) traffic is highly sensitive to latency, jitter, and packet loss, especially in large environments such as a 200-person call center. Although the technician confirms that VoIP prioritization (QoS) is configured correctly and speed tests show 50 Mbps upload and download speeds, overall available bandwidth can still be insufficient during peak usage.
Speed tests measure raw throughput at a point in time and do not reflect real-world congestion caused by hundreds of simultaneous calls, application usage, and data transfers. On busy days, the cumulative bandwidth demand likely exceeds the available capacity, leading to degraded call quality despite correct VLAN and QoS settings.
267. Frage
A user's computer can connect to internal network resources but cannot access websites on the internet. Other users on the same network do not have this issue. Which of the following should a technician do first to troubleshoot the issue?
Antwort: D
Begründung:
If a computer can access internal network resources but cannot reach external websites, the most likely issue is a DNS configuration problem. According to CompTIA Core 1 (220-1201) networking troubleshooting methodology, DNS should be one of the first items checked when internet access fails but local connectivity remains intact.
DNS translates human-readable domain names into IP addresses. If DNS settings are incorrect, missing, or pointing to an invalid server, the computer will be unable to resolve website names even though it has network connectivity. Since other users on the same network can access the internet, the issue is isolated to the individual workstation.
Replacing the network cable is unnecessary because internal connectivity is already working. Restarting the DHCP server would impact all users, not just one. Adjusting firewall rules on the router would affect the entire network rather than a single computer.
CompTIA emphasizes starting with least disruptive and most likely causes when troubleshooting. Verifying DNS settings aligns with this best-practice approach.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - Network Troubleshooting and DNS
268. Frage
Which of the following is an example of VDI?
Antwort: B
Begründung:
Virtual Desktop Infrastructure (VDI) delivers a desktop operating system hosted on a centralized server and streams the graphical user interface (GUI) to endpoint devices such as thin clients, zero clients, or standard PCs. According to CompTIA Core 1 (220-1201) virtualization objectives, VDI allows users to access their desktop environments remotely while all processing and data remain on the server.
Option A accurately describes this model: a GUI streamed from a server to thin clients. This approach improves centralized management, enhances security, and simplifies endpoint hardware requirements.
Provisioning a sandbox is an example of test or development virtualization, not desktop virtualization. High-performance workstations with a local OS are physical desktops, not VDI. Launching a virtual machine server on a hypervisor describes server virtualization, not desktop delivery.
CompTIA highlights VDI as a common enterprise solution that separates the desktop environment from the physical device, enabling flexibility, scalability, and centralized control.
269. Frage
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