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Microsoft Azure Fundamentals CompTIA Network+ CompTIA CySA+ CompTIA Linux+ CompTIA PenTest+ CompTIA Cloud+ CompTIA ITF+ AWS Cloud Practitioner Microsoft Azure FundamentalsPrepare for the CompTIA A+ 220-1101 exam with our free practice test. Randomly generated and customizable, this test allows you to choose the number of questions.
You work for a small enterprise with 3 on-premise servers and a shared private network. You are able to connect a new laptop to the wireless network but it has no network or internet connectivity. The servers on the same network are working as expected. You know these servers have static IPs. Based on this info, where should you start looking FIRST?
Try connecting to 5Ghz instead of 2.4Ghz
Check for WiFi interference
Check DHCP is working correctly
Disable the firewall between the WiFi and VLAN networks
Based on the information given, it seems like the new device is not receiving an IP addresses and DHCP is the best place to start troubleshooting.
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices connected to the network using a client–server architecture.The technology eliminates the need for individually configuring network devices manually, and consists of two network components, a centrally installed network DHCP server and client instances of the protocol stack on each computer or device. When connected to the network, and periodically thereafter, a client requests a set of parameters from the server using DHCP. DHCP can be implemented on networks ranging in size from residential networks to large campus networks and regional ISP networks. Many routers and residential gateways have DHCP server capability. Most residential network routers receive a unique IP address within the ISP network. Within a local network, a DHCP server assigns a local IP address to each device. DHCP services exist for networks running Internet Protocol version 4 (IPv4), as well as version 6 (IPv6). The IPv6 version of the DHCP protocol is commonly called DHCPv6.
Dynamic_Host_Configuration_Protocol - Wikipedia, the free encyclopediaWhat is the purpose of entering a PIN code during the Bluetooth pairing process?
To reset the Bluetooth device to factory settings
To authenticate and establish a secure connection between devices
To increase the range of the Bluetooth signal
To specify the type of data that can be shared
To configure the Bluetooth device's network settings
To set a permanent password for the device
A PIN code is used to authenticate and establish a secure connection between two Bluetooth devices. The PIN ensures that the devices pairing is authorized by the users and helps prevent unwanted or unauthorized access to the device's Bluetooth service.
In a virtualized environment, what technology is used to run the virtual machines?
Hypervisor
Virtual Host Machine (VHM)
vHost
Sandbox
In virtual computing the Hypervisor is the component that manages and runs the virtual machines. It can be a software running on top of a host operating system or can be a hardware/firmware component that runs without the need for a host operating system.
A hypervisor (also known as a virtual machine monitor, VMM, or virtualizer) is a type of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is called a host machine, and each virtual machine is called a guest machine. The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems. Unlike an emulator, the guest executes most instructions on the native hardware. Multiple instances of a variety of operating systems may share the virtualized hardware resources: for example, Linux, Windows, and macOS instances can all run on a single physical x86 machine. This contrasts with operating-system–level virtualization, where all instances (usually called containers) must share a single kernel, though the guest operating systems can differ in user space, such as different Linux distributions with the same kernel. The term hypervisor is a variant of supervisor, a traditional term for the kernel of an operating system: the hypervisor is the supervisor of the supervisors, with hyper- used as a stronger variant of super-. The term dates to circa 1970; IBM coined it for the 360/65 and later used it for the DIAG handler of CP-67. In the earlier CP/CMS (1967) system, the term Control Program was used instead.
Hypervisor - Wikipedia, the free encyclopediaSeveral employees are experiencing poor quality and interruptions during VoIP calls around the same time. After verifying that the VoIP software configurations are correct, which of the following is the BEST action to take to resolve the problem?
Upgrade the VoIP software to the latest version
Check the QoS configurations on network devices to prioritize VoIP traffic.
Switch to a different VoIP service provider as the current one may have a bad connection
Replace the employee's patch cable connecting their phone or computer to the network
The correct answer is checking the QoS configurations on network devices. VoIP is highly sensitive to network congestion and delays. Ensuring that Quality of Service (QoS) is configured correctly on network devices can help prioritize VoIP traffic and improve call quality by minimizing packet loss and jitter. Replacing patch cables would not likely resolve a network-wide problem. Upgrading the VoIP software could solve issues related to the software itself but doesn't address a network-specific problem like poor call quality. Lastly, switching to a different VoIP provider would be a drastic measure without first confirming network issues.
A user's workstation is reporting inaccurate system date/time and the issue persists after replacing the CMOS battery. Your initial theory was that the CMOS battery needed replacement. Given that the issue remains, what should be your NEXT step in troubleshooting?
Replace the computer, as it is indicative of a failing machine.
Escalate the problem to the vendor immediately.
Examine the motherboard for faults or damage that might be causing the problem.
Perform a BIOS update in the hopes that it will correct the issue.
If the problem persists after the initial theory (replacing the CMOS battery) is tested and does not resolve the issue, a new theory must be established. In this case, the next logical step would be to check the motherboard for issues, as a faulty motherboard can also lead to inaccurate system date/time records and is a testable, next step. Escalating the issue may be premature if further onsite troubleshooting can address the problem. Updating BIOS or replacing the computer altogether without further diagnosis does not apply the best troubleshooting practices to correct the issue.
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