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单选题What command will allow the operator to add the current working directory to the command search path?（）A export PATH=pwdB export PATH=$PWDC export PATH=$PATH:pwdD export PATH=$PATH:$PWD

题目
单选题
What command will allow the operator to add the current working directory to the command search path?（）
A

export PATH=pwd

B

export PATH=$PWD

C

export PATH=$PATH:pwd

D

export PATH=$PATH:$PWD

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Anadministratorneedstoaddthe／usr／vac／bindirectorytotheirPATHenvironmentvariableforthecurrentsession.Whichofthefollowingwillaccomplishthistask()

A.path=$path：/usr/vac/bin；exportpath

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C.Modifythe pathenvironmentvariablein/etc/profile

D.Modifythepathenvironmentvariablein/.profile


参考答案：A

第2题：

AS PATH列表可以被应用于如下哪些场景?()

A.从BGP Peer接收路由基于as-path属性过滤，Peerx.x.x.xas-path-filter import

B.向BGP Peer发送路由基于as-path属性过滤，PeerX.X.X.Xas-path-filter，该命令不需要关键字export。缺省方向为export

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第3题：

You have a login-path named "adamlocal" that was created by using the mysql_config_editor command. You need to check what is defined for this login_path to ensure that it is correct for you deployment.You execute this command:$mysql_config_editor print –login-path=adamlocal What is the expected output of this command?（）

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第4题：

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  • A、 export LD_PRELOAD=/usr/local/lib
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第5题：

What are the mandatory， well-known BGP attributes？（）

  • A、origin,AS-path,next-hop
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正确答案:A

第6题：

What command will allow the operator to add the current working directory to the command search path?()

A. export PATH=pwd

B. export PATH=$PWD

C. export PATH=$PATH:pwd

D. export PATH=$PATH:$PWD


参考答案：C

第7题：

linux系统中，以下显示结果相同的是（）。

  • A、echo The current working path is $PWD.
  • B、echo "The current working path is $PWD." Echo hello
  • C、echo 'The current working path is $PWD.' Echo hello
  • D、echo "The current working path is `pwd`."
  • E、echo The current working path is $PWD. Echo hello

正确答案:A,B,D,E

第8题：

What is the default function of a secondary path in MPLS?()

A. to act as an equal-cost path to the primary path

B. to enable another LSP for load balancing

C. to act as a diverse backup path to the primary path

D. to allow the use of explicit path selection via EROs


参考答案：C

第9题：

linux系统中，以下显示结果不同的是（）。

  • A、echo The current working path is $PWD.
  • B、echo 'The current working path is $PWD.'
  • C、echo "The current working path is $PWD."
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正确答案:B

第10题：

What command will allow the operator to add the current working directory to the command search path?（）

  • A、export PATH=pwd
  • B、export PATH=$PWD
  • C、export PATH=$PATH:pwd
  • D、export PATH=$PATH:$PWD

正确答案:C

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