单选题Which of the following would BEST optimize a computer that is heavily used? （）A ScandiskB DefragC IndexingD Chkdsk

第1题：

第2题：

A user has discovered that even though they are using the latest version of the anti-virus software,the computer is still being infected by a virus. Which of the following is the BEST solution for this problem?（）

• A、Replace the computer.
• B、Run chkdsk /f.
• C、Update the virus signatures.
• D、Run scandisk.

第3题：

第4题：

Which of the following commands would be used to display the IP address on a UNIX/Linux computer?（）

• A、netstat
• B、ipconfig
• C、ifconfig
• D、dig

第5题：

Which of the following commands would be used to verify the integrity of critical system files?（）

• A、verify
• B、nslookup
• C、sfc
• D、chkdsk

第6题：

A laptop LCD screen needs to be replaced. Which of the following tools would be BEST used toopen the case?（）

• A、Flathead screwdriver
• B、Plastic shim
• C、Metal shim
• D、Pliers

第7题：

Which of the following would be used to optimize network performance and increase bandwidth availability?（）

• A、Packet analysis
• B、QoS
• C、Traffic shaping
• D、Fault tolerance

第8题：

第9题：

Which of the following tools is used to consolidate files and folders on a local drive?（）

• A、CHKDSK
• B、DEFRAG
• C、DISK CLEANUP
• D、Computer Management

第10题：

Which of the following features would BEST be used to optimize real-time voice and video chat?（）(Select TWO)

• A、Load balancing
• B、Caching engines
• C、Qos
• D、Fault tolerance systems
• E、Traffic shaping