Bob, a technician, wants to run antivirus scans on every machine on a daily basis. To minimize the impact to all system resources, which of the following is the BEST time to schedule the scans to run?（）..

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

[单选题] 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? （）

A、Cable tester B、Ohm meter C、Field strength meter D、PSU tester

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第8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9题

[] A UNIX user named Bob wants to replace his chess program with a new one，but he is hot sure where the old one is in stalled.Bob is currently able to run a Java chess program starting from his home directory/home/bobusingthecommand： java-classpath/test：/home/bob/downloads/*.jargames.ChessBob’sCLASSPATHisset（atlogintime）to： /usr/lib：/home/bob/classes：/opt/java/lib：/opt/java/lib/*.jar What is a possible location for the Chess.class file？（） A UNIX user named Bob wants to replace his chess program with a new one，but he is hot sure where the old one is in stalled.Bob is currently able to run a Java chess program starting from his home directory/home/bobusingthecommand： java-classpath/test：/home/bob/downloads/*.jargames.ChessBob’sCLASSPATHisset（atlogintime）to： /usr/lib：/home/bob/classes：/opt/java/lib：/opt/java/lib/*.jar What is a possible location for the Chess.class file？（）

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

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第10题

[] Which of the following statements allows BOB to revoke access to the SAMPLE database from user TOM?（）

A、A.REVOKE ACCESS ON DATABASE FROM USER bob B、B.REVOKE CONNECT ON DATABASE FROM USER tom C、C.REVOKE tom FROM ACCESS ON DATABASE BY USER bob D、D.REVOKE tom FROM CONNECT ON DATABASE BY USER bob

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Bob, a technician, wants to run antivirus scans on every machine on a daily basis. To minimize the impact to all system resources, which of the following is the BEST time to schedule the scans to run?（）

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