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单选题
After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）
A
Use refresh -s sshd
B
Use init.sshd /etc/rc.ssh
C
Use /usr/sbin/sshd -restart
D
Use stopsrc -s sshd and then startsrc -s sshd
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Linux系统里,想要禁止root远程登陆,需要修改()文件,然后重启服务。
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After performing a copy backup of a file server, the archive bit on the backed up files will be which of the following?()
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After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）A. Use refresh -s sshdB. Use init.sshd /etc/rc.sshC. Use /usr/sbin/sshd -restartD. Use stopsrc -s sshd and then startsrc -s sshd
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Duringanattemptto’scp’betweentwohosts,anerrorindicatingPRNGisnotseededisdisplayed.Whatisthelikelycauseoftheerror?()
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考题
可通过修改哪个文件,更改ssh服务的默认端口()
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Which of the following files should be edited to disable remote machines from performing a "finger" on a system？（）A、/etc/security/userB、/etc/servicesC、/etc/inetd.confD、/etc/hosts.equiv
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可通过修改哪个文件，更改ssh服务的默认端口（）。A、/etc/ssh/sshd_configB、/etc/ssh/ssh_configC、/etc/sysconfig/sshD、/etc/sysconfig/sshd
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如何启动ssh服务（）。A、service sshd statusB、/etc/init.d/ssh statusC、service ssh statrtD、service sshd start
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Which of the following will corrupt the BIOS?（）A、Applying the BIOS settings in the incorrect orderB、Power being lost during the upgrade processC、Installing the OS before applying the BIOS upgradeD、Imaging the system after performing a BIOS upgrade
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After performing a copy backup of a file server， the archive bit on the backed up files will be which of the following？（）A、 DeletedB、 UnchangedC、 SetD、 Copied
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The system hangs at boot time after starting NFS services. What is the most likely cause？（） A、The action parameter of rcnfs in /etc/inittab is ’off’ and the script called is not exiting.B、The action parameter of rcnfs in /etc/inittab is ’wait’ and the script called is not exiting.C、The action parameter of rcnfs in /etc/inittab is ’once’ and the script called is not exiting.D、The action parameter of rcnfs in /etc/inittab is ’respawn’ and the script called is not exiting
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单选题Which of the following files should be edited to disable remote machines from performing a "finger" on a system？（）A
/etc/security/userB
/etc/servicesC
/etc/inetd.confD
/etc/hosts.equiv
考题
单选题After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）A
Use refresh -s sshdB
Use init.sshd /etc/rc.sshC
Use /usr/sbin/sshd -restartD
Use stopsrc -s sshd and then startsrc -s sshd
考题
单选题What command should a system administrator run after using an editor to create the /etc/tunables/nextboot file？（）A
ksh -n nextbootB
tunsave -a -f nextbootC
tuncheck -r -f nextbootD
diff $（vmtune） /etc/tunables/nextboot
考题
单选题Linux系统里，想要禁止root远程登陆，需要修改（）文件，然后重启服务。A
/etc/sshd/ssh_configB
/etc/sshd/sshd_configC
/etc/ssh/ssh_configD
/etc/ssh/sshd_config
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单选题By saying “You have left the door wide open”, a speaker might be performing the three acts: locutionary, illocutionary and perlocutionary _____.A
at the same timeB
one after anotherC
two first and then the otherD
one first and then the other two
考题
单选题An administrator learns that users are unable to login to a server via ssh. After making a telnet connection to the server， how can the administrator check the status of the sshd subsystem？（）A
lssys -a comB
lssys -a sshdC
lssrc -s sshdD
lssrc -s tcpip
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单选题Linux系统的安全设置主要从磁盘上分区、账户安全设置、禁用危险服务、远程登录安全、用户鉴别安全、审计策略、保护root账户、使用网络防火墙的文件权限共10个方面来完成。小张在学习了Linux系统安全的相关知识后，尝试为自己计算机上的Linux系统进行安全配置。下列选项是他的部分操作。其中不合理的是（）A
编辑文件/etc/passwd,检查文件中用户ID 禁用所有ID=0的用户B
编辑文件/etcf/ssh/sshd_config。将PermitRootLogin设置为noC
编辑文件/etc/pam.d/system-auth,设置authrequire pam_tally,so onerr-fail deny-6 unlock_time=300
考题
单选题可通过修改哪个文件，更改ssh服务的默认端口（）。A
/etc/ssh/sshd_configB
/etc/ssh/ssh_configC
/etc/sysconfig/sshD
/etc/sysconfig/sshd
考题
单选题During an attempt to ’scp’ between two hosts， an error indicating PRNG is not seeded is displayed.What is the likely cause of the error？（）A
The sshd user id is locked.B
The /var/empty directory needs to be created.C
PRNG is set to ’no’ in the /etc/ssh/sshd_config file.D
The permissions on /dev/random and /dev/urandom are incorrect.
考题
单选题如何启动ssh服务（）。A
service sshd statusB
/etc/init.d/ssh statusC
service ssh statrtD
service sshd start
考题
单选题After performing a copy backup of a file server， the archive bit on the backed up files will be which of the following？（）A
DeletedB
UnchangedC
SetD
Copied
考题
填空题What is meant if you go on using the service after changes in the agreement are posted?It means you have ____ the modification.
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