A+ 1201 12-20

A user connects a laptop to a projector in a meeting room, but the display appears narrower at the bottom than the top. Restarting the laptop and reseating the cable didn't help. What should the technician do next to correct the display?

• Replace the HDMI cable.

• Power cycle the projector.

• Adjust the keystone.

• Increase the resolution.

Which type of network is created when you connect your smartphone to a wireless speaker via Bluetooth?

• LAN

• PAN

• CAN

• WAN

A support technician is checking a laptop keyboard because one key is unresponsive. After confirming there's no debris under the key, what is the most economical step to try next?

• Replace the keyboard.

• Replace the key switch.

• Replace the circuit board.

• Replace the keycap.

Which networking technology should be implemented to move a desktop to a separate logical network without changing its physical location?

• DHCP

• VLAN

• DNS

• VPN

An employee working remotely tries to change an expired domain password using Ctrl+Alt+Delete but receives a message saying the configuration information could not be retrieved from the domain controller. What should be done to fix this?

• Restart the computer.

• Connect to the VPN.

• Reset the account in Active Directory.

• Join the Wi-Fi network.

A technician inspects a tablet that has a bulge pushing the screen outward. The device powers on when charging, but the screen appears damaged and turns off when unplugged. What is the most likely cause?

• Malfunctioning power supply

• Damaged charge port

• Deprecated battery

• Broken screen

How is a virtual machine most effectively used as a sandbox environment?

• Run an application on multiple workstations without installation.

• Explore how an application behaves in a different environment.

• Migrate a currently used legacy application from physical to virtual.

• Create a firewall where the sandbox acts as a perimeter network.

Which service is typically responsible for automatically distributing IP addresses across a corporate network?

• DNS

• Syslog

• Telnet

• DHCP

While replacing the power supply in an older desktop PC, a technician discovers that the new ATX connector does not fit the motherboard. What is the best cost-effective solution?

• Adjust the input voltage.

• Install a modular power supply.

• Rebuild the failed power supply.

• Use a 20-pin to 24-pin adapter.

What type of light source is used in OLED displays?

• Halogen

• LED

• Fluorescent

• Incandescent