Bob, a technician, is troubleshooting a PC that intermittently does not power on. Which of the following tools would be the BEST choice to use to verify a possible cause? （）..

第1题

[单选题] A customer, Bob, needs to be able to access the Internet while traveling. Which of the following could Jill, a technician, recommend to Bob?（）

A、Cellular service with an adapter for Bob’s laptop. B、USB adapter with 802.11n capabilities for maximum speeds. C、A Bluetooth card to attach to multiple networks. D、Enable Wi-Fi so Bob can connect to any open network.

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第2题

[单选题] 若Bob给Alice发送一封邮件，并想让Alice确信邮件是由Bob发出的，则 Bob应该选用（）对邮件加密。

A、Alice的公钥 B、Alice的私钥 C、Bob公钥 D、Bob的私钥

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第3题

[单选题] On which of the following hard drive types must Bob, a technician, change the jumper setting to match the motherboard/cabling combination?（）

A、SATA B、eSATA C、Solid state D、PATA

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第4题

[] Which of the following switches for the FORMAT command line utility allows Bob, a technician, toformat a floppy disk the FASTEST?（）

A、A./c B、B./q C、C./x D、D./v

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第5题

[] 如下图所示，Alice用Bob的密钥加密明文，将密文发送给Bob。Bob再用自己的私钥解密，恢复出明文。以下说法正确的是（）如下图所示，Alice用Bob的密钥加密明文，将密文发送给Bob。Bob再用自己的私钥解密，恢复出明文。以下说法正确的是（）

A、A.此密码体制为对称密码体制 B、B.此密码体制为私钥密码体制 C、C.此密码体制为单钥密码体制 D、D.此密码体制为公钥密码体制

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第6题

[单选题] A UNIX user named Bob wants to replace his chess program with a new one, but he is not sure where theold one is installed. Bob is currently able to run a Java chess program starting from his home directory /home/bob using the command: java-classpath /test:/home/bob/downloads/*.jar games.Chess Bob'sCLASSPATH is set (at login time) to/usr/lib:/home/bob/classes:/opt/java/lib:/opt/java/lib/*.jar What is a possible location for the Chess.class file?（）

A、/test/Chess.class B、/home/bob/Chess.class C、/test/games/Chess.class D、/usr/lib/games/Chess.class E、/home/bob/games/Chess.class F、inside jarfile /opt/java/lib/Games.jar (with a correct manifest) H、inside jarfile /home/bob/downloads/Games.jar (with a correct manifest)

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第7题

[填空题] "在请求消息INVITEsip：bob@acme.comSIP/2.0。。。。。。。中，sip：bob@acme.com被称之为（）"

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第8题

[单选题] How are you, Bob?（）

A、How are you? B、I'm fine. Thank you. C、How do you do? D、Nice to meet you.

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第9题

[单选题] A:Hi Bob, I'd like to congratulate you on the progress of Beihai project. B:（）

A、Fine,thankyou.Itisreallyaninterestingproject B、Thankyou,John.Itisreallyaninterestingproject C、Mypleasure,Itisreallyaninterestingproject

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Bob, a technician, is troubleshooting a PC that intermittently does not power on. Which of the following tools would be the BEST choice to use to verify a possible cause? （）

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