IBM(000-234) 题目列表
单选题Which of the following performance tools will work with optimized code and also provides source statement profiling？（）A profB gprofC kprofD tprof
单选题The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution？（）A Increase the size of the JFS log logical volume so more transacations can be written to this log.B Create a second， additional JFS log and have the /mydatabase logical volume point to both JFS logs.C Migrate the JFS log device to another physical disk in the same volume group.D Only one JFS log device for each volume group can be used. Use the migratepv command to move the JFS log device to an empty disk in another volume group.
单选题An AIX system administrator needs to adjust the maximum amount of memory that can be pinned. Which of the following commands is used to make the change？（）A vmtune -MB svmon -mC vmstat -sD schedtune -m
单选题The nice value is 60 in the ps listing. Which command is used to change this to a value of 20？（）A renice -n -20 {PID}B renice -n 20 {PID}C renice -n -40 {PID}D renice -n 40 {PID}
单选题Which of the following commands should be used to report statistics on network protocols used by the system？（）A lsattrB pstatC netstatD ifconfig
单选题Given the following on a system that is not a name server， which will be the first area searched to resolve a host name to an IP address？（） #cat /etc/resolv.conf domain abc.century.com nameserver 192.9.201.1 nameserver 192.9.201.2 #cat /etc/netsvc.conf hosts = bind，nis，local #echo $NSORDER local，bindA /etc/hosts on server 192.9.201.2B /etc/hosts on the local systemC /etc/named.rev on 192.9.201.1D /etc/netsvc.conf on the NIS server
单选题Using the schedtune output， memory is considered over-committed if：（）A more than one process is spinning.B more than 4 processes become active.C the system schedules more than 16 processes.D the pageouts divided by page steals is greater than 1/h.
单选题Which of the following performance tools can be used to determine if a system is thrashing？（）A svmon and tprofB vmtune and schedtuneC ps and schedtuneD vmstat and topas
单选题Which of the following commands will only provide a snapshot of average memory usage for a process？（）A vmtuneB ps auC iostatD rmss -m
单选题Which of the following metrics provided by the iostat report is used to initially determine if a system is I/O bound？（）A % idleB % sysC % userD % iowait
单选题In an iostat report， which of the following options best describes the value of % tm_act？（）A The total CPU usage for this driveB The bandwidth utilization of the indicated driveC It can best be represented by the equation （%iowait - %ioidle）D It can best be represented by the equation （kilobytes read/kilobytes written） *100
单选题A TCP/IP application is transferring files from a personal machine to a remote machine. The application writes 32 kilobytes of data at a time to the socket， but has not issued a system call to set the window size. Which of the following procedures should be performed on the personal machine to increase the throughput of the application？（）A Increase the size of thewallB Increase the size of sb_maxC Increase the size of tcp_recvspaceD Increase the size of tcp_sendspace
单选题Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks？（）A Adjust Path MTU attributes， using the no command.B Adjust the status queue size on the adapters， using the chdev command.C Adjust ipforwarding to enabled， using the no command.D Adjust tcp_maxburst to enabled， using the no command.
单选题Which of the following commands is most useful in initially collecting data to determine a network performance problem？（）A pingB traceC ifconfigD lsattr
单选题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？（）A vmtune -wB svmon -wC schedtune -wD vmstat -s