Which of the following components of a laptop is NOT upgradeable?（）
A、Ethernet LAN card
B、Motherboard
C、Hard disk
D、RAM
相关问题推荐
-
你想构建你的项目，让每个项目队员完成独立的工作包。这工作包是一个（）。
A、WBS中可交付的最小的工作单元
B、有独特标记的任务
C、报告所需要的层次
D、可以被分配给多家机构单位的工作
-
Hardware locks, keypads on entry doors, badge readers, and biometric readers are all examplesof which of the following security types?（）
A、Physical
B、Logical
C、Software
D、Authentication
-
Which of the following statements about an LCD screen is not true?（）
A、An LCD screen consumes more power than a CRT screen.
B、An LCD screen display may present high-quality images but only to viewers sitting directly in fron of the screen.
C、Currently, all laptops use LCD screens.
D、An LCD screen is considerably more expensive than a CRT screen.
-
In order to link data centers, a customer is evaluating the installation of fiber optic cable between buildings that are 400 meters apart. The installation will require multiple patch panels and cables. Which of the following is the most critical factor to consider for this installation?（）
A、I/O rate
B、bandwidth
C、signal loss
D、Dense Wavelength Division Multiplexing (DWDM)
-
Which of the following interfaces is used to connect analog devices to the Internet?（）
A、POTS
B、ATM
C、VDSL
D、SDSL