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单选题
Which command will give a kernel stack traceback? （）
A
trace
B
traceson
C
trcon
D
trcrpt
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Which statement is true regarding the Junos OS?（）A、The Junos kernel is based on the Solaris operating system.B、The Junos kernel is based on the GNU Zebra operating system.C、The Junos kernel is completely original and not based on any other operating system.D、The Junos kernel is based on the FreeBSD UNIX operating system.
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单选题After running the vmstat command， which of the following would most likely cause the value in the blocked column to be unusually high？（）A
Kernel threadB
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单选题Which statement is true regarding the Junos OS?（）A
The Junos kernel is based on the Solaris operating system.B
The Junos kernel is based on the GNU Zebra operating system.C
The Junos kernel is completely original and not based on any other operating system.D
The Junos kernel is based on the FreeBSD UNIX operating system.
考题
单选题Which of the following statements are FALSE concerning the defragfs command？（）A
The defragfs command should not be run against file systems and logical volumes that contain mostly transitory information， such as /tmp.B
The defragfs command should not be run on a large JFS2 file system when running on a 32-bit kernel.C
The defragfs command can improve file system performance by increasing the file system’s contiguous free space.D
The defragfs command can only be run against file systems that are mounted with read-write permissions.
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Repoint the symbolic link of /unix to unix_mp. Perform a bosboot and reboot the partition.C
Use the SMIT menu to select 32 bit versus the 64 bit kernel. Select 32 bits and reboot the partition.D
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考题
单选题Which statement is true regarding the Junos OS?（）A
The Junos kernel is based on the Solaris operating systemB
The Junos kernel is based on the GNU Zebra operating systemC
The Junos kernel is completely original and not based on any other operating systemD
The Junos kernel is based on the FreeBSD UNIX operating system
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单选题Which of the following actions will enable 64-bit applications on a system with a 32-bit kernel？（）A
change the kernel to 64bit， reboot， and then use the following command：chdev -l sys0 -a applications=64_bitB
Re-install the OS with 64-bit kernel enabledC
Re-install all applications with 64-bit versionsD
Use smit to enable the 64-bit applications
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单选题Multi Protocol Label Switching （MPLS） is a data-carrying mechanism that belongs to the family of packet-switched networks. For an MPLS label， if the stack bit is set to1， which option is true？（）A
The stack bit will only be used when LDP is the label distribution protocolB
The label is the last entry in the label stack.C
The stack bit is for Cisco implementations exclusively and will only be used when TDP is the label distribution protocol.D
The stack bit is reserved for future use.
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