单项选择题

Assuming the network supports all speeds， which of the following should an administrator use to get the MOST throughput？（）

A. CAT5 cabling
B. Gigabit NIC
C. 10/100 full duplex NIC
D. 100 half duplex NIC

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单项选择题

Which of the following statements is true about L3 cache？（）

A.L3 cache operates faster than the system processor.
B.L3 cache runs at the speed of the processor.
C.L3 cache can deliver data in as little as 15ns.
D.L3 cache runs at the speed of the system bus.

单项选择题

Which of the following is a key component of a directory services server？（）

A. VPN
B. RIS
C. LDAP
D. RAS

单项选择题

An administrator installs a new server with five 146GB drives and implements RAID 5 for hardware redundancy.How much disk space will be available for the OS， tools and regular files？（）

A.146GB
B.438GB
C.584GB
D.730GB