試験の準備方法-完璧な220-1102関連資格知識試験-素晴らしい220-1102日本語版テキスト内容

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220-1102関連資格知識

CompTIA 220-1102日本語版テキスト内容、220-1102関連資料

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CompTIA A+ Certification Exam: Core 2 認定 220-1102 試験問題 (Q259-Q264):

質問 # 259
A systems administrator is troubleshooting network performance issues in a large corporate office. The end users report that traffic to certain internal environments is not stable and often drops. Which of the following command-line tools can provide the most detailed information for investigating the issue further?

A. arp
B. ipconfig
C. pathping
D. nslookup

正解：C

解説：
Explanation
Pathping is the best command-line tool to provide the most detailed information for investigating the network performance issue further. Pathping is a utility that combines the functions of ping and tracert, which are two other command-line tools that test network connectivity and latency. Pathping sends packets to each router on the path to a destination and then computes results based on the packets returned from each hop. Pathping can show the route taken by the packets, the number of hops, the latency of each hop, and the packet loss percentage. This information can help the systems administrator identify where the network problem occurs and how severe it is. Ipconfig, arp, and nslookup are not as useful as pathping for this task. Ipconfig shows the configuration of the network interface card, such as IP address, subnet mask, and default gateway. Arp shows the mapping of IP addresses to MAC addresses in the local network. Nslookup queries DNS servers for domain name resolution. References:
Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 21 CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Cert Guide, page 457

質問 # 260
A systems administrator is creating a new document with a list of the websites that users are allowed to access.
Which of the following types of documents is the administrator MOST likely creating?

A. Acceptable use policy
B. Incident report
C. Standard operating procedure
D. Access control list

正解：D

解説：
Explanation
An access control list (ACL) is a list of permissions associated with a system resource (object), such as a website. An ACL specifies which users or system processes are granted access to objects, as well as what operations are allowed on given objects . A systems administrator can create an ACL to define the list of websites that users are allowed to access.
References: 1: Access-control list - Wikipedia (https://en.wikipedia.org/wiki/Access-control_list)

質問 # 261
A user is unable to use any internet-related functions on a smartphone when it is not connected to Wi-Fi When the smartphone is connected to Wi-Fi the user can browse the internet and send and receive email. The user is also able to send and receive text messages and phone calls when the smartphone is not connected to Wi-Fi. Which of the following is the MOST likely reason the user is unable to use the internet on the smartphone when it is not connected to Wi-Fi?

A. The smartphone has too many applications open
B. The smartphone's Bluetooth radio is disabled.
C. The smartphone's line was not provisioned with a data plan
D. The smartphone's SIM card has failed

正解：C

質問 # 262
An Internet cafe has several computers available for public use. Recently, users have reported the computers are much slower than they were the previous week. A technician finds the CPU is at 100% utilization, and antivirus scans report no current infection. Which of the following is MOST likely causing the issue?

A. A keylogger is capturing user passwords.
B. A cryptominer is verifying transactions.
C. Files were damaged from a cleaned virus infection.
D. Spyware is redirecting browser searches.

正解：B

解説：
A cryptominer is a malicious program that uses the CPU resources of a computer to generate cryptocurrency, such as Bitcoin or Ethereum. This can cause the CPU to run at 100% utilization and slow down the system.
Spyware, virus and keylogger are other types of malware, but they do not necessarily cause high CPU usage.
Verified References:
https://www.comptia.org/blog/what-is-cryptomininghttps://www.comptia.org/certifications/a

質問 # 263
During a network outage, a technician discovers a new network switch that was not listed in the support documentation. The switch was installed during a recent change window when a new office was added to the environment. Which of the following would most likely prevent this type of mismatch after next month's change window?

A. Allowing network changes once per year
B. Requiring all network changes include updating the network diagrams
C. Performing annual network topology reviews
D. Routinely backing up switch configuration files

正解：B

解説：
This would ensure that the support documentation reflects the current state of the network and prevents any confusion or mismatch during a network outage. Updating the network diagrams is also one of the best practices for network documentation, as stated in the Official CompTIA A+ Core 2 Study Guide1. The other options are not as effective or feasible as option B. Performing annual network topology reviews is too infrequent and may not capture recent changes. Allowing network changes once per year is too restrictive and may not meet the business needs. Routinely backing up switch configuration files is important, but it does not help with identifying new switches or devices on the network.

質問 # 264
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