单选题A remote user is attempting to install a new external storage device on their computer. The user reports they only have one port open on the back of the device and the port is similar to the USB port their mouse is connected to. The port has a bevel on

A technician plugs a USB device into the computer. The system tray displays a message that reports the device is installed, but may not work properly. Which of the following is the MOST likely cause of the message?（）

A. The device needs a firmware update

B. The device needs an updated driver installed

C. The plugged in device is too slow for the USB port speed

D. The device is incompatible with the installed version of Windows

Refer to the exhibit. A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. If any other device is detected, the port is to drop frames from this device. The administrator configured the interface and tested it with successful pings from PC_A to RouterA, and then observes the output from these two show commands.Which two of these changes are necessary for SwitchA to meet the requirements? （）

A.Port security needs to be globally enabled.

B.Port security needs to be enabled on the interface.

C.Port security needs to be configured to shut down the interface in the event of a violation.

D.Port security needs to be configured to allow only one learned MAC address.

E.Port security interface counters need to be cleared before using the show command.

F.The port security configuration needs to be saved to NVRAM before it can become active.

You are the administrator of Ezonexam.com's network.

You want to connect your Windows 2000 Professional computer to a new TCP/IP based laser print device. The print device is Plug and Play compliant and is included on the current Hardware Compatibility List (HCL). When you attempt to create a new TCP/IP printer port you receive the following error message:

"Specified Port cannot be added. The port already exists."

You want to be able to use the new TCP/IP printer.

What should you do?

A．Modify the properties of the existing printer port to use the new print device.

B．Change the LPT port setting to bidirectional in the BIOS on your computer.

C．Change the LPT port setting to enable legacy Plug and Play detection on your computer.

D．Obtain and install the WDM-compliant device drivers and printing software for the printer.

A. The switch port link lights will be off on both switches indicating the ports are not connected.

B. The switch port link light will be off on one switch indicating that STP has disabled the port.

C. The switch port link lights will flash amber indicating an error.

D. The switch port link lights will be green indicating normal operation.

You have configured the Odyssey Access Client with a profile which has the "Disable Server Verification" setting cleared.What will be the result if the device certificate on the MAG Series device has expired and the user attempts to authenticate?（）

A. The user will be instructed to call the network administrator.

B. The user will fail authentication.

C. The user will be prompted to install a new device certificate on the MAG Series device.

D. The user will successfully authenticate and have full network access.