最新的CompTIA A+ Certification Exam: Core 1 - 220-1201免費考試真題
SIMULATION 13
A user at site A is reporting dropped VoIP calls when using a softphone application. However, users at site B are not experiencing any issues. The VoIP provider has a tool to troubleshoot connectivity issues.
INSTRUCTIONS
Click on each tab to investigate the cause of the dropped calls. In Part 1, type help in each terminal to view a list of available commands. Then, select the correct answer for each question.
In Part 2, make necessary network configuration changes to resolve the reported issue.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
A user at site A is reporting dropped VoIP calls when using a softphone application. However, users at site B are not experiencing any issues. The VoIP provider has a tool to troubleshoot connectivity issues.
INSTRUCTIONS
Click on each tab to investigate the cause of the dropped calls. In Part 1, type help in each terminal to view a list of available commands. Then, select the correct answer for each question.
In Part 2, make necessary network configuration changes to resolve the reported issue.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正確答案:
Part 1 (VoIP troubleshooting tool)
Most likely cause of the VoIP quality issue
Select: Latency
Reason: Site A shows extremely high latency (310.6 ms) while jitter is moderate and packet loss is 0%.
First action to quickly resolve the issue and minimize disruption
Select: Plug an Ethernet cable into the user workstation.
Reason: This is the fastest, least disruptive way to reduce latency/jitter if the user is on Wi-Fi or has a poor wireless link.
Part 2 (Network configuration change)
On the Site A Switch, configure port Eth4 as the Call center user port:
Description: Call center
State: No shut
VLAN: 300
Mode: Access
Most likely cause of the VoIP quality issue
Select: Latency
Reason: Site A shows extremely high latency (310.6 ms) while jitter is moderate and packet loss is 0%.
First action to quickly resolve the issue and minimize disruption
Select: Plug an Ethernet cable into the user workstation.
Reason: This is the fastest, least disruptive way to reduce latency/jitter if the user is on Wi-Fi or has a poor wireless link.
Part 2 (Network configuration change)
On the Site A Switch, configure port Eth4 as the Call center user port:
Description: Call center
State: No shut
VLAN: 300
Mode: Access
A manager wants to ensure that employees can only pick up their own printouts. Which of the following accomplishes this objective? (Choose two.)
正確答案: A,B
說明：（僅 Fast2test 成員可見）
A technician is configuring a laptop with an IP address that will not change but will be assigned dynamically. Which of the following configurations should the technician use to achieve this goal?
正確答案: B
說明：（僅 Fast2test 成員可見）
Which of the following cloud-computing concepts describes an environment in which various internal VM servers for a specific organization are stored within both a physical server and a cloud environment?
正確答案: D
說明：（僅 Fast2test 成員可見）
A small business is growing and wants to scale its computing capacity. The business wants to continue using on-site equipment until it is EOL. The solution must be able to share data with the local data center. Which of the following models should a technician suggest?
正確答案: E
說明：（僅 Fast2test 成員可見）
Which of the following port numbers are associated with email traffic? (Choose two.)
正確答案: B,C
說明：（僅 Fast2test 成員可見）
An administrator for a wireless network is planning the company's floor plan using a heat map.
Which of the following types of networks is the administrator configuring?
Which of the following types of networks is the administrator configuring?
正確答案: A
說明：（僅 Fast2test 成員可見）
Employees are concerned about sensitive data being printed on a shared multifunction printer located in a high-traffic hallway. Which of the following should a technician do to address this concern?
正確答案: B
說明：（僅 Fast2test 成員可見）
Which of the following port numbers is used for a file transfer?
正確答案: B
說明：（僅 Fast2test 成員可見）
A technician upgrades a PC with two DIMMs, for a total of 32GB. After installing the two DIMMs, the user notices the OS is reporting only 16GB. Which of the following tasks should the technician perform to resolve the issue in the most rapid, cost-effective way possible?
正確答案: A
說明：（僅 Fast2test 成員可見）
Which of the following is commonly affected by high latency?
正確答案: B
說明：（僅 Fast2test 成員可見）
An end user reports that their laptop shuts down when they undock it. Even when using a new charging cable, the issue persists. Which of the following should the technician do next?
正確答案: A
說明：（僅 Fast2test 成員可見）
A receipt printer produces completely black pages when printing. Which of the following should the technician do to resolve the issue?
正確答案: D
說明：（僅 Fast2test 成員可見）
A client is unable to unlock their smartphone. When they try to enter their code, the input is unsuccessful. Which of the following components has most likely failed?
正確答案: B
說明：（僅 Fast2test 成員可見）