- (Topic 4)
An engineer discovers the reason a user is unable to access the internet on a company laptop is because the RJ45 port failed. Which of the following should the engineer do to immediately restore network connectivity?
Correct Answer:
B
- (Topic 2)
A technician is working on a help desk ticket for a user who wants the filament replaced in a 3-D printer. Which of the following should the technician do to remove the old filament and load the new one?
Correct Answer:
D
A technician is working on a help desk ticket for a user who wants the filament replaced in a 3-D printer. To remove the old filament and load the new one, the technician should preheat the nozzle to melting temperature. After the nozzle is heated, the technician should withdraw the filament and remove the spool. Then, cut a sharp angle on the end of the new strand, and push it along until resistance is felt.
- (Topic 3)
Following a scheduled power outage, users report they cannot access the local intranet. A technician is able to ping the IP address of the server that is hosting the website. Which of the following serves is MOST likely offline?
Correct Answer:
B
DNS stands for Domain Name System and is a service that translates domain names (such as www.example.com) into IP addresses (such as 192.168.1.100) that computers can use to communicate over a network. If the DNS server is offline, users may not be able to access websites or other network resources by using their domain names, even if they are online and reachable by their IP addresses. The technician should check if the DNS server is running and configured correctly, or use an alternative DNS
server if possible. Reference: https://www.comptia.org/training/books/a-core-1-220-1101- study-guide (page 81)
- (Topic 4)
Given the following output from a cable tester:
===================
= Open
=12345678=
=12 45 78=
===================
Which of the following tools should the technician use to resolve this issue? (Select two).
Correct Answer:
DE
The output from the cable tester indicates that there is an open fault in the cable, which means that one or more of the wires in the cable are not connected properly or are broken. The open fault affects the wires 3, 4, and 6, which are used for transmitting and receiving data in Ethernet networks. The open fault can cause network connectivity issues, such as no link, slow speed, or packet loss12.
To resolve this issue, the technician should use a crimper and a punchdown tool, which are tools that are used to attach connectors to cables or wires to patch panels. A crimper is a tool that squeezes or crimps a connector, such as an RJ-45, to the end of a cable, ensuring that the wires are securely inserted into the pins of the connector. A punchdown tool is a tool that pushes or punches a wire into a slot on a patch panel, creating a connection between the wire and the panel. Both tools can be used to fix or replace the faulty wires or connectors that cause the open fault12.
The other options are not as effective or relevant as a crimper and a punchdown tool. A loopback plug is a tool that is used to test the functionality of a network port or device, by sending and receiving signals from the same port or device. A loopback plug can help diagnose network problems, such as faulty ports or devices, but it cannot fix the open fault in the cable12. A network tap is a tool that is used to monitor or capture network traffic, by creating a copy of the data that passes through a network link. A network tap can help analyze network performance, security, or troubleshooting, but it cannot fix the open fault in the cable12. A toner probe is a tool that is used to trace or identify a cable or wire, by sending and detecting an audible tone along the cable or wire. A toner probe can help locate or label network cables or wires, but it cannot fix the open fault in the cable12. A Wi- Fi analyzer is a tool that is used to scan or measure wireless networks, by displaying information such as signal strength, channel, encryption, etc. A Wi-Fi analyzer can help optimize or troubleshoot wireless networks, but it cannot fix the open fault in the cable12. References:
✑ Network Tools – CompTIA A+ 220-1101 - Professor Messer IT …
✑ CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 5: Networking, Section 5.5: Network Tools, Page 249
✑ CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 5: Networking, Section 5.5: Network Tools, Page 213
✑ CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Pearson uCertify Course and Labs and Textbook Bundle, Chapter 5: Networking, Section 5.5: Network Tools, Page 250
- (Topic 3)
Which of the following describes the BEST use case for a client-side hypervisor?
Correct Answer:
A
A client-side hypervisor is a virtual machine monitor (VMM) that resides in and virtualizes a user’s computer, allowing it to run multiple operating systems (or virtual machines) on shared hardware12. A client-side hypervisor can be useful for a software developer who needs to test an application in many environments, such as different versions of Windows, Linux, or Mac OS. By using a client-side hypervisor, the developer can switch between different virtual machines without rebooting the computer or using multiple physical devices3.
