An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low.  Which of the following commands is used to reset the level？（）

单项选择题Thesystemadministratornoticesthatafterrunningnetstat-rn，severalsmallc’sareshowingupundertheflagscolumns，androutesthatwerenotdefinedarealsoshowingup.Howcantheseclonedroutesbestopped？（）

A. By default cloned routes are turned on.  To turn cloned routes off issue the command：      #no -o tcp_pmtu_discover=0       #no -o udp_pmtu_discover=0       and add to the rc.net or rc.bsdnet file for next reboot
B. By default cloned routes are turned on.  To turn cloned routes off issue the command：        # no -o tcp_pmtu_discover=1        #no -o udp_pmtu_discover=1         and add to the rc.net or rc.bsdnet file for next reboot
C. By default cloned routes are turned on.  To turn cloned routes off issue the command：         #no -o ipforwarding=0         and add to the rc.net or rc.bsdnet file for next reboot
D. By default cloned routes are turned on.  To turn cloned routes off issue the command：         #no -o ipforwarding=1         and add to the rc.net or rc.bsdnet file for next reboot

单项选择题To examine the Exhibit， press the Exhibit button. Using the  ps -el  output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）

A. The snmpd process is running at a fixed priority of 60
B. If both the syncd process and the portmap process become available to be run at the same time， then the syncd process would get scheduled first
C. If both the userprog process and the qdaemon process become available to be run at the same time， then the qdaemon process would get scheduled first
D. If both the syslogd process and the llbd process become available to be run at the same time， then the llbd process would get scheduled first

单项选择题WhichofthefollowingcommandsshouldbeusedtoresettheVirtualMemoryManagertuningparameterstotheirdefaultvalues？（）

A. schedtune -t
B. vmtune -R
C. schedtune -r
D. schedtune -D

单项选择题Thenicevalueis60inthepslisting.Whichcommandisusedtochangethistoavalueof20？（）

A. renice -n -20 {PID}
B. renice -n 20 {PID}
C. renice -n -40 {PID}
D. renice -n 40 {PID}

单项选择题Thenfsstat-ccommandshowszerobadxid，butretransandtimeoutsaresizeable，whatisthemostprobablecauseoftheproblem？（）

A. Too many nfsd’s running
B. Client and server with different buffer sizes
C. Bridges， routers or gateways are receiving too many fragmentated packets
D. Too few nfsd’s running