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单选题
A user downloads a 4.1 GB ISO image from a website. Which of the following media types isrequired for the user to burn the image?（）
A
CD+R
B
BD-R
C
DVD-ROM
D
CD-ROM
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The Cisco IOS image file will not be visible in the output from the show flash command.B
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backup the BIOS configuration to use laterB
install the BIOS update from a command promptC
create a bootable floppy and copy the BIOS update tools to the floppyD
read the manufacturer’s guidelines and recommendations on installing the update
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多选题A coworker has reported that someone has engaged in prohibited activity. The supervisor hasasked the technician to quarantine the PC until police arrive. Which of the following should the technician do?（）AAllow the user to continue workingBCheck for virusesCRe-image the hard driveDDocument time/date for later referenceEPrevent users from accessing the PCFTurn off PC
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As the root user from serverA run the command rhost serverBB
As the root user from serverA run the command rlogin serverBC
As the desired user from serverB run the command rhost serverAD
As the desired user from serverA run the command rlogin serverB
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单选题A user reports that they are unable to reach a particular website. The user had no issues reaching the site earlier in the day. Which of the following is the MOST likely cause of the lack of access？（）A
The VLAN is misconfiguredB
The user has an improperly configured NICC
The DHCP server is downD
The DNS server is down
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单选题A user receives an email slating that their account was compromised and there is a need to verify account credentials by submitting the correct information on a website. Which of the following security threats is occurring?（）A
PhishingB
Smurf attackC
Denial of serviceD
Man-in-the-middle
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