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单选题
A virus has been removed from the user’s machine, but the user still cannot access the Internet.Which of the following should the technician check NEXT?（）
A
Disable port forwarding on the router.
B
Reboot to Safe Mode and see if the Internet is accessible.
C
Format the machine and reinstall the OS.
D
Check the web browser’s proxy settings.
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更多 “单选题A virus has been removed from the user’s machine, but the user still cannot access the Internet.Which of the following should the technician check NEXT?（）A Disable port forwarding on the router.B Reboot to Safe Mode and see if the Internet is accessible.C Format the machine and reinstall the OS.D Check the web browser’s proxy settings.” 相关考题
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After a fire has been extinguished in a closed space, personnel may safely enter the space whenA.smoke density has been decreased sufficiently to see the bulkhead opposite the compartment's entranceB.a lifeline and explosion proof flash light are usedC.all smoke and toxic fumes are removed and an adequate oxygen supply is presentD.overhaul has been completed to remove any possible source of re-ignition
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A user states that their work PC has become infected with a virus. Which of the following shouldthe technician do FIRST?()
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共用题干
Using HIV Virus to Cure CancerScientists are planning to use human immuno deficiency（免疫缺陷）virus(HIV) , one of mankind's most feared viruses,as a carrier of genes which can fight cancer and a range of diseases that cannot be cured.The experts say HIV has an almost perfect ability to avoid the body's immune（免疫的）defenses, making it ideal for carrying replacement genes into patients'bodies,according to the Observer.A team at the California-based Salk Institute,one of the world's leading research centers on biological sciences,has created a special new breed of HIV and has started negotiations with the U.S.Food and Drug Administration(FDA)to begin clinical gene therapy（治疗）trials this year.The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have“far wider applications”.The plan remains very likely to cause controversy since it involves making use of a viruswhich has caused more than 22 million deaths around the world in the past two decades.Verma said that the idea of using HIV for a beneficial purpose was“shocking”but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly.In the past two years, breakthroughs in genetics（遗传学）have led gene therapy sci-entists to try and replace the genes that do not function normally.Unfortunately,the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.The HIV virus has the ability to escape from,and then destroy,the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients'bodies.The idea of using HIV for a beneficial purpose has been widely accepted.A:RightB:WrongC:Not mentioned
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共用题干
Using HIV Virus to Cure CancerScientists are planning to use human immuno deficiency（免疫缺陷）virus(HIV) , one of mankind's most feared viruses,as a carrier of genes which can fight cancer and a range of diseases that cannot be cured.The experts say HIV has an almost perfect ability to avoid the body's immune（免疫的）defenses, making it ideal for carrying replacement genes into patients'bodies,according to the Observer.A team at the California-based Salk Institute,one of the world's leading research centers on biological sciences,has created a special new breed of HIV and has started negotiations with the U.S.Food and Drug Administration(FDA)to begin clinical gene therapy（治疗）trials this year.The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have“far wider applications”.The plan remains very likely to cause controversy since it involves making use of a viruswhich has caused more than 22 million deaths around the world in the past two decades.Verma said that the idea of using HIV for a beneficial purpose was“shocking”but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly.In the past two years, breakthroughs in genetics（遗传学）have led gene therapy sci-entists to try and replace the genes that do not function normally.Unfortunately,the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.The HIV virus has the ability to escape from,and then destroy,the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients'bodies.The HIV virus has caused more deaths in developed countries.A:RightB:WrongC:Not mentioned
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共用题干
Using HIV Virus to Cure CancerScientists are planning to use human immuno deficiency（免疫缺陷）virus(HIV) , one of mankind's most feared viruses,as a carrier of genes which can fight cancer and a range of diseases that cannot be cured.The experts say HIV has an almost perfect ability to avoid the body's immune（免疫的）defenses, making it ideal for carrying replacement genes into patients'bodies,according to the Observer.A team at the California-based Salk Institute,one of the world's leading research centers on biological sciences,has created a special new breed of HIV and has started negotiations with the U.S.Food and Drug Administration(FDA)to begin clinical gene therapy（治疗）trials this year.The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have“far wider applications”.The plan remains very likely to cause controversy since it involves making use of a viruswhich has caused more than 22 million deaths around the world in the past two decades.Verma said that the idea of using HIV for a beneficial purpose was“shocking”but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly.In the past two years, breakthroughs in genetics（遗传学）have led gene therapy sci-entists to try and replace the genes that do not function normally.Unfortunately,the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.The HIV virus has the ability to escape from,and then destroy,the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients'bodies.HIV can be safely used to cure cancer only if the deadly genes have been removed.A:RightB:WrongC:Not mentioned
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共用题干
Using HIV Virus to Cure CancerScientists are planning to use human immuno deficiency（免疫缺陷）virus(HIV) , one of mankind's most feared viruses,as a carrier of genes which can fight cancer and a range of diseases that cannot be cured.The experts say HIV has an almost perfect ability to avoid the body's immune（免疫的）defenses, making it ideal for carrying replacement genes into patients'bodies,according to the Observer.A team at the California-based Salk Institute,one of the world's leading research centers on biological sciences,has created a special new breed of HIV and has started negotiations with the U.S.Food and Drug Administration(FDA)to begin clinical gene therapy（治疗）trials this year.The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have“far wider applications”.The plan remains very likely to cause controversy since it involves making use of a viruswhich has caused more than 22 million deaths around the world in the past two decades.Verma said that the idea of using HIV for a beneficial purpose was“shocking”but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly.In the past two years, breakthroughs in genetics（遗传学）have led gene therapy sci-entists to try and replace the genes that do not function normally.Unfortunately,the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.The HIV virus has the ability to escape from,and then destroy,the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients'bodies.The HIV virus is an excellent warrior to fight the body's immune cells.A:RightB:WrongC:Not mentioned
考题
A system administrator has disabled USB ports after experiencing several virus outbreaks. A user needs to transfer several extremely large work related files from their home desktop computer to their work desktop computer. Which of the following will allow the user to transfer the needed files?（）A、An IEEE-1394 deviceB、A NIC deviceC、An IrDA deviceD、A FDD device
考题
Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?（）A、The files have grown to over eight gigabytes in sizeB、The file systems are corrupt, and fsck should be runC、The tape block size has been changed from the defaultD、The user’s limit has been changed to less than eight gigabytes
考题
A user has changed their password using the passwd command， and notices that the change is only made tothe local node. When the administrator changes the user’s password from the command line using the passwd command thechange is made cluster-wide. What is the most likely cause of this problem？（）A、The user has a UID less than 200B、The user has been defined as an administrative userC、The file /usr/es/sbin/cluster/clpasswd is not executable by the userD、The user needs explicit authorization to change their password cluster-wide
考题
Which of the following commands will repair boot sector blocks after a virus has been removed?（）A、chkdskB、formatC、fixmbrD、sfc
考题
A virus has been removed from the user’s machine, but the user still cannot access the Internet.Which of the following should the technician check NEXT?（）A、Disable port forwarding on the router.B、Reboot to Safe Mode and see if the Internet is accessible.C、Format the machine and reinstall the OS.D、Check the web browser’s proxy settings.
考题
Under which of the following circumstances would a technician use IPCONFIG /RENEW?（）A、After an unsuccessful rebootB、If a user’s IP address has been spoofedC、After using IPCONFIG /RELEASED、If the computer has an ARP address conflict
考题
A user selects their proper domain and is unable to log into their Windows computer.The error states：‘System cannot log you on to the domain because the system’s computer account in its primary domain is missing or the password on that account is incorrect’.Which of the following is the MOST likely cause for this error？（）A、The computer’s account was removed from Active Directory.B、The user’s account was removed from Active Directory.C、The computer was disjoined from the domain.D、The user typed in the wrong password.
考题
A technician notices a machine’s performance has degraded. The machine has constant errorswhen trying to read data from the drive. Which of the following should be used to repair the disk errors?（）A、DEFRAGB、MSCONFIGC、EDITD、CHKDSK
考题
A user attempts to login to a bookmarked site but is prompted for their social security number,mother’s maiden name and date of birth. Which of the following has MOST likely happened?（）A、The website has updated the security policies.B、The user’s identity has been stolen.C、The browser has been hijacked.D、The user typed the website address incorrectly.
考题
A user’s OS has become corrupt, and the user would like to restore the PC back to when they first bought the machine. Which of the following would be the BEST choice?（）A、Factory Recovery PartitionB、Use Safe ModeC、Last Known Good ConfigurationD、Purchase a copy of the original OS
考题
单选题A user attempts to login to a bookmarked site but is prompted for their social security number,mother’s maiden name and date of birth. Which of the following has MOST likely happened?（）A
The website has updated the security policies.B
The user’s identity has been stolen.C
The browser has been hijacked.D
The user typed the website address incorrectly.
考题
单选题Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?（）A
The files have grown to over eight gigabytes in sizeB
The file systems are corrupt, and fsck should be runC
The tape block size has been changed from the defaultD
The user’s limit has been changed to less than eight gigabytes
考题
单选题From the last paragraph the author tells us that ______.A
economy is the only reason for small car’s popularity.B
the size of a car also does matter to people in their 20sC
Honda is better than Suburban in terms of quality.D
small car already has been popular for 10 years.
考题
单选题Malware has been detected and removed on a customer computer several times in a short periodof time. Which of the following will BEST help prevent future occurrences?（）A
Defragment the hard driveB
Discuss safe web-browsing habits with the customerC
Delete temporary files, cookies and browser historyD
Install anti-virus software which uses manual updates
考题
单选题A user has changed their password using the passwd command， and notices that the change is only made tothe local node. When the administrator changes the user’s password from the command line using the passwd command thechange is made cluster-wide. What is the most likely cause of this problem？（）A
The user has a UID less than 200B
The user has been defined as an administrative userC
The file /usr/es/sbin/cluster/clpasswd is not executable by the userD
The user needs explicit authorization to change their password cluster-wide
考题
单选题A user states that their work PC has become infected with a virus. Which of the following shouldthe technician do FIRST?（）A
Perform an antivirus program scanB
Boot the machine into Safe ModeC
Remove the machine from the networkD
Check for system security patches
考题
单选题A user selects their proper domain and is unable to log into their Windows computer.The error states：‘System cannot log you on to the domain because the system’s computer account in its primary domain is missing or the password on that account is incorrect’.Which of the following is the MOST likely cause for this error？（）A
The computer’s account was removed from Active Directory.B
The user’s account was removed from Active Directory.C
The computer was disjoined from the domain.D
The user typed in the wrong password.
考题
单选题Which of the following is correct according to the passage you have just heard?A
Microsoft has been through a bruising battle with antitrust regulators.B
Mr. Gates’s position as the industry’s figurehead has been challenged.C
The computer industry is currently having a hard time.D
Mr. Gates has earned 870 billion US dollars over the last two decades.
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