A+ Changed 220-1101 Questions

The best tool to identify the correct cable is C. Toner probe.

A toner probe is a device that can be used to locate and trace a specific cable within a network rack or a wall outlet. A toner probe consists of two parts: a tone generator and a tone detector. The tone generator is connected to one end of the cable and sends an audible signal through the cable. The tone detector is used to scan the other end of the cable and pick up the signal. The tone detector emits a sound or a light when it detects the signal, indicating the correct cable.

A toner probe can be useful for network technicians who need to locate an end user’s Cat 6 cable within a network rack that is poorly documented and has no cable management system. A Cat 6 cable is a type of twisted pair cable that can support high-speed data transmission over Ethernet networks. A network rack is a frame that holds network equipment, such as servers, switches, routers, or patch panels. A cable management system is a set of devices or methods that organize and secure the cables within a network rack .

The other options are not the best tools to identify the correct cable, because they have different purposes or limitations. A cable tester (option A) is a device that can be used to test the functionality and quality of a cable, such as its continuity, resistance, or interference. A cable tester can help diagnose and troubleshoot faulty cables, but it cannot locate or trace specific cables within a network rack. A network tap (option B) is a device that can be used to monitor and analyze the traffic and data that pass through a network. A network tap can help capture and inspect network packets, but it cannot locate or trace specific cables within a network rack. A loopback plug (option D) is a device that can be used to test the functionality and connectivity of a port or an interface. A loopback plug can help verify if a port or an interface is working properly, but it cannot locate or trace specific cables within a network rack.

For more information about toner probes and other network tools, you can refer to the following web search results: [What Is a Toner Probe?], [What Is Cat 6 Cable?], [What Is a Network Rack?], [What Is a Cable Tester?], [What Is a Network Tap?], [What Is a Loopback Plug?].

A custom hosts file is a file that maps hostnames to IP addresses, allowing the user to access websites or servers by their names instead of their numerical addresses. For example, a user can add a line like 192.168.1.100 myserver.local to their hosts file and then access the server by typing myserver.local in their browser. However, this method only works if the IP address of the server does not change. If the server is configured with a dynamic IP address, which means it can be assigned a different IP address by the network router or DHCP server, then the hosts file entry will become invalid and the user will not be able to connect to the server by its hostname. Therefore, the technician should ensure that the server is configured with a static IP address, which means it has a fixed and permanent IP address that does not change. This way, the hosts file entry will always point to the correct IP address of the server and the user will be able to ping the server hostname from their computer.

A sandbox is a virtual environment that isolates the engineer’s research activities from the rest of the system. This allows the engineer to test, experiment, and modify the system without affecting the real data, applications, or settings. A sandbox is the best environment for research purposes because it provides a safe and controlled way to explore new ideas, simulate scenarios, and troubleshoot problems. A sandbox can also be easily reset or deleted after the research is done.

References

What is a Sandbox Environment?

Chapter 4: Virtualization and Cloud Computing

The best way to connect the devices is A. Enable pairing.

Pairing is a process that allows two Bluetooth devices, such as a smartphone and a headset, to communicate with each other wirelessly. Pairing creates a secure connection between the devices and allows them to exchange data and audio signals. To pair the devices, the user needs to enable Bluetooth on both devices, make them discoverable, and select the desired device from the list of available devices. The user may also need to enter a PIN code or confirm a passkey to complete the pairing process .

The other options are not the best ways to connect the devices. A hotspot is a feature that allows a smartphone to share its cellular data connection with other devices via Wi-Fi, Bluetooth, or USB. A hotspot can provide internet access to other devices, but it does not allow them to communicate with each other directly. NFC stands for Near Field Communication, which is a technology that allows two devices to exchange data by bringing them close together (usually within 4 cm). NFC can be used to initiate pairing between two Bluetooth devices, but it cannot establish a connection by itself. Synchronization is a process that allows two devices to update and match their data, such as contacts, calendars, photos, or music. Synchronization can be done via Wi-Fi, Bluetooth, USB, or cloud services, but it requires an existing connection between the devices.