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

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

单项选择题Which of the following characteristics is true of a PCIe x8 card?（）

A. It can use only IRQ8.
B. It uses eight memory addresses for storage of data.
C. It has eight lanes by which data is transmitted.
D. It has eight times the bandwidth of a standard PCI card.

单项选择题Which of the following has the speed of PC133?（）

A.SDRAM
B.RAMBUS
C.DDR2
D.DDR