命令cat file1 file2 >file3把file1和file2组合成file3。..

第1题

[单选题] Files /tmp/file2 and /tmp/file3 are hard linked to /tmp/file1. What will the result be if a user makes changes to /tmp/file2 at the same time another user tries to delete /tmp/file1?（）

A、All three files will contain the updates and will remain available. B、All three files will be deleted and no changes will be made to /tmp/file2. C、Only /tmp/file2 will contain the updates, but /tmp/file3 will remain available. D、Both /tmp/file2 and /tmp/file3 will contain the updates and will remain available.

点击查看答案

第2题

[单选题] Given a portion of a valid Java EE web application’s directory structure： MyApp | |-- File1.html | |-- Directory1 ||-- File2.html| |-- META-INF |-- File3.html You want to know whether File1.html， File2.html， and/or File3.html will be directly accessible by your webclient’s browsers. Which statement is true？（）

A、All three files are directly accessible. B、Only File1.html is directly accessible. C、Only File2.html is directly accessible. D、Only File3.html is directly accessible. E、Only File1.html and File2.html are directly accessible.

点击查看答案

第3题

[单选题] 在UNIX中，可用ls命令察看文件属性，一个文件file1的属性为“RW_R_ _ R _ _”，如果对文件赋予本用户读写执行权限，组内用户和其它用户读写权限，则使用（）命令。

A、chmod g+rw，o+r file1 B、chmod 755 file1 C、chmod g+rwx file1 D、chmod 775 file1

点击查看答案

第4题

[单选题] You are the network administrator for your company. All network servers run Windows Server 2003.The network includes a file server named File1. File1 contains a single disk for system files and two SCSIhard disks that comprise a 72-GB mirrored volume with 65 GB of read-only data. Users connect to thisdata by using shortcuts on their desktops.File1 is scheduled for replacement. You have a scheduled maintenance window to complete this task.Before the maintenance window, you build a new server.You need to bring the new server online with current data and re-establish redundancy as quickly aspossible. You must also ensure that the desktop shortcuts will continue to function.What should you do? （）

A、Name the new server File2. Create a new mirrored volume by using two 72-GB disks. Connect File2 to the network and copy the data from File1. When copying is complete, shut down the old File1. B、Name the new server File1. Move both disks from the old File1 to the new File1. Scan the disks for changes. Import the disks. Connect the new File1 to the network. C、Name the new server File1. Break the mirror on the old File1. Move one of the disks from the old File1 to the new File1. Scan the disk for changes. Initialize the disk. Select the spare disk and create the mirror. Connect the new File1 to the network. D、Name the new server File1. Remove one of the disks in the mirror from the old File1. Move the disk to the new File1. Scan the disk for changes. Import the disk. Shut down the old File1 and connect the new File1 to the network.

点击查看答案

第5题

[单选题] You are the network administrator for your company. All network servers run Windows Server 2003. The network includes a file server named File1. File1 contains a single disk for system files and two SCSI hard disks that comprise a 72-GB mirrored volume with 65 GB of read-only data. Users connect to this data by using shortcuts on their desktops. File1 is scheduled for replacement. You have a scheduled maintenance window to complete this task. Before the maintenance window, you build a new server. You need to bring the new server online with current data and re-establish redundancy as quickly as possible. You must also ensure that the desktop shortcuts will continue to function. What should you do? （）

A、Name the new server File2. Create a new mirrored volume by using two 72-GB disks. Connect File2 to the network and copy the data from File1. When copying is complete, shut down the old File1. B、Name the new server File1. Move both disks from the old File1 to the new File1. Scan the disks for changes. Import the disks. Connect the new File1 to the network. C、Name the new server File1. Break the mirror on the old File1. Move one of the disks from the old File1 to the new File1. Scan the disk for changes. Initialize the disk. Select the spare disk and create the mirror. Connect the new File1 to the network. D、Name the new server File1. Remove one of the disks in the mirror from the old File1. Move the disk to the new File1. Scan the disk for changes. Import the disk. Shut down the old File1 and connect the new File1 to the network.

点击查看答案

第6题

[判断题] 命令ls -l >file1与ls -l >>file1的含义的含义一样。

点击查看答案

第7题

[单选题] Given a portion of a valid Java EE web application’s directory structure：MyApp | |--Directory1 ||--File1.html| |--META-INF| |--File2.html| |--WEB-INF |--File3.html You want to know whether File1.html， File2.html，and/or File3.html is protected from direct access by yourweb client’s browsers. What statement is true？（）

A、All three files are directly accessible. B、Only File1.html is directly accessible. C、Only File2.html is directly accessible. D、Only File3.html is directly accessible.

点击查看答案

第8题

[多选题] public class test { public static void main（String [] a） { assert a.length == 1； } } Which two will produce an AssertionError？（）

A、 java test B、 java -ea test C、 java test file1 D、 java -ea test file1 E、 java -ea test file1 file2 F、 java -ea：test test file1

点击查看答案

第9题

[单选题] Files /tmp/file2 and /tmp/file3 are hard linked to /tmp/file1. What will the result be if a user makes changes to /tmp/file2 at the same time another user tries to delete /tmp/file1？（）

A、All three files will contain the updates and will remain available. B、All three files will be deleted and no changes will be made to /tmp/file2. C、Only /tmp/file2 will contain the updates， but /tmp/file3 will remain available. D、Both /tmp/file2 and /tmp/file3 will contain the updates and will remain available.

点击查看答案

命令cat file1 file2 >file3把file1和file2组合成file3。

请使用微信扫码支付