A.RIMMB.DDR RAMC.SDRAMD.SODIMMA technician needs to upg……

单项选择题A user explains that after the office was vacuumed the previous night their sound is not working and they cannot get onto the network. The user has verified that all of the PC’s cables are plugged into their respective ports. Which of the following is the MOST likely cause?（）

A. Frayed or broken cables
B. UPS is unplugged
C. NIC and sound card are disabled in Device Manager
D. Speakers are muted

单项选择题Which of the following describes the random access memory limitations with Vista 64-bit operating system?（）

A.2GB
B.4GB
C.8GB
D.128GB

单项选择题A user wants to install an external hard drive using the fastest connection available. Which of the following should the technician recommend?（）

A.USB 1.1
B.eSATA
C.USB 2.0
D.IEEE 1394

单项选择题Which of the following is an example of a hot swappable component on a laptop?（）

A. Internal wireless adapter
B. CPU
C. PCMCIA card
D. RAM

单项选择题Which of the following passive cooling methods BEST dissipates a component’s heat?（）

A. Heatsink
B. Fan
C. Liquid cooling
D. Compressed air