AIX 25个考题

1.After rebooting, the support specialist decides to check the error log for errors. Which of the following is the correct command to use?
A.crash
B.errpt -a
C.errlog -a
D.errlog -k
2.All of the following are contained in a system dump except:
A. The entire contents of memory
B. The history of kernel function calls
C. The process/thread that was active
D. The final history of error log events leading up to the system crash
3.Which one of the following will result from an adapter configuration of
ifconfig en0 129.35.22.8 network 255.0.0.0?
A. Destination Gateway 129.0.0.99 129.35.22.8
B. Destination Gateway 129.255.0.1 129.35.22.8
C. Destination Gateway 224.0.0.1 129.35.22.8
D. Destination Gateway 254.0.0.1 129.35.22.8
4.A client is setting up an 128-port asynchronous adapter with two remote RANs. The two SA devices (RANs) are not available to the system. In addition, node 1’s LEDs is displaying AC and node 2’s LEDs is displaying En. What is the most likely cause of the problem?
A.There are 2 RANs with the same node number.
B.The adapter itself is not being recognized by the system.
C.The serial line in SMIT is defined with the wrong speed.
D.The serial line in SMIT is defined with the wrong cable type.
5.When starting a system, a user does not get a login prompt at the console.
However, the user can get a login using telnet from another machine. All of
the following are probable solutions for this problem except:
A. chdev
B. chcons -a ‘login=enable’
C. Edit /etc/inittab.
D. Reconfigure the network.
6.Scenario: A network administrator has been asked to integrate a new
RS/6000 to be used as a corporate mail server into the network. There are
five nodes on the Ethernet II network, with a network address of 193.3.7.0
and a subnet mask of 255.255.255.0. The machine contains ATM, token-ring
and integrated Ethernet adapters.
Which one of the following files must be edited to allow the machine to be a
TFTP server?
A. /etc/bootptab
B. /etc/rc.tcpip
7.Which command is used to modify network options?
A. no -o
B. ifconfig -a
C. chdev -l
D. netstat -m
8.The system administrator for Company XYZ is monitoring a system that has recently shown a decrease in performance. What is the best tool to identify where a performance bottleneck may exist?
A.lsps
B.errpt
C.svmon
D.vmstat
9.After a user initiates a dump request on an AIX system, the entry shown in
Figure 5-4 on page 104 is recorded in the systems error log.

Which of the following conclusions can be drawn?
A. The dump request failed.
B. The dump request was initiated due to an invalid sequence number.
C. The dump request was partially successful.
D. The dump request was initiated due to a problem with the device with the major/minor numbers 10,1.
10.Once a file has been edited, which one of the following actions must occur
before clients can use the bootp server?
A. telinit q
B. refresh -s inetd
C. startsrc -s bootpd
D. No action is required
11.A customer is experiencing performance problems and runs the iostat command. The output of the iostat command is shown below. What should be recommended?
tty: tin tout avg-cpu: % user % sys % idle % iowait
0.0 170.2 7.1 12.1 0.8 80.0
Disks: % tm_act Kbps tps Kb_read Kb_wrtn
hdisk0 0.0 0.0 0.0 0 0
hdisk1 0.0 0.0 0.0 0 0
cd0 55.9 622.4 155.6 1250 8
tty: tin tout avg-cpu: % user % sys % idle % iowait
0.0 170.2 5.1 14.1 0.8 80.0
Disks: % tm_act Kbps tps Kb_read Kb_wrtn
hdisk0 0.5 2.0 0.5 4 0
hdisk1 0.0 0.0 0.0 0 0
cd0 55.9 622.4 155.6 1270 0
A.A user program needs optimizing.
B.Another ATM card needs to be added.
C.The CD-ROM needs to be removed from the configuration.
D.Space permitting, the volume mounted on the CD-ROM should be moved to a disk.
12.Using information provided in Figure 4-3 on page 63, all of the following are
true except:
A. The error was unrecoverable.
B. The termination of the SCSI bus failed.
C. A defective cable or terminator probably caused the error.
D. The presence of all zeros in the sense data indicates invalid data.
13.The ODM is located in:
A./etc/objrepos
B./usr/lib/objrepos
C./usr/share/lib/objrepos
D.All of the above
14.Operator-attention messages from print commands are routed through which
subsystem daemon?
A. qdaemon
B. lpd
C. errdemon
D. writesrv
15.A system performs large batch-type jobs with mostly sequential I/O. The system memory is not fully committed. What vmtune settings should be changed to increase sequential read throughput?
A.maxperm and minperm
B.maxpin and numfsbufs
C.maxpgahead and minfree
D.maxrandwrt and minpgahead
16.User X on machine AAA is trying to rsh to machine BBB. The user is prompted for a password, even though a /u/X/.rhosts file is configured on machine BBB. The user discovers this is a permission problem with the .rhosts file. Which of the following are the correct permissions of a .rhosts file?
A.400
B.440
C.600
D.660
17.Analyzing the following error report listing, how would a system specialist find out detailed information on why the system shutdown?
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
2A9F5252 1119151898 P H tok0 WIRE FAULT
2BFA76F6 1117101698 T S SYSPROC SYSTEM SHUTDOWN BY USER
9DBCFDEE 1117101998 T O errdemon ERROR LOGGING TURNED ON
192AC071 1117101598 T O errdemon ERROR LOGGING TURNED OFF
AA8AB241 1116181498 T O CMDCRASH_EXIT OPERATOR NOTIFICATION
AA8AB241 1116181498 T O CMDCRASH_ENTRY OPERATOR NOTIFICATION
2BFA76F6 1116173598 T S SYSPROC SYSTEM SHUTDOWN BY USER
9DBCFDEE 1116174198 T O errdemon ERROR LOGGING TURNED ON
192AC071 1116173498 T O errdemon ERROR LOGGING TURNED OFF
2BFA76F6 1116164698 T S SYSPROC SYSTEM SHUTDOWN BY USER
A.errpt 2BFA76F6
B.errpt -j 2BFA76F6
C.errpt -a -j 2BFA76F6
D.errpt -a -k 2BFA76F6
18.The order-processing department of a company has complained of slow response times from their application. The system administrator has determined this is due to a disk I/O bottleneck on the physical volume where the application data file system is located. Which of the following could be used to help improve the application response times?
A.Stripe the file system logical volume across multiple disks.
B.Move the jfslog to the same physical volume as the file system.
C.Increase the size of the application data file system.
D.Move the physical volume into a separate volume group.
19.A system administrator is experiencing performance problems and runs the vmstat command. The output of vmstat is shown below. What can be concluded from this output?
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
2 0 9200 11027 0 0 0 0 0 0 103 52 14 14 16 0 69
2 1 9200 11027 0 0 0 0 0 0 207 251 29 12 11 0 67
3 1 9200 11027 0 0 0 0 0 0 207 120 29 9 11 0 80
5 1 9200 11027 0 0 0 0 0 0 206 120 29 13 5 0 79
4 1 9200 11027 0 0 0 0 0 0 207 131 32 9 8 0 72
A.The machine is I/O bound.
B.The machine needs its memory optimized.
C.The machine needs a FDDI card installed.
D.A user program is causing unnecessary paging.
20.Which of the following commands should be used to determine the microcode
level of a system?
A. lsattr -El
B. lscfg -vl
C. lsCs ssa
D. lsdev -Cc disk
21.A customer would like to remove an unneeded, but active, paging space called paging00. What is proper sequence of steps to accomplish this?
A.Remove the paging space with the rmps command and reboot the system.
B.Disable the paging space with the chps command, reboot the system and remove the paging00 logical volume with the rmps command.
C.Disable the paging space with the chps command, remove the paging00 logical volume with the rmps command, and reboot the system.
D.Disable the paging space with the chps command, reboot the system and remove the paging00 logical volume with the rmlv command
22.Using SMIT, a support specialist is installing a PTF to correct a problem. The installation has failed. Where would the support specialist look to troubleshoot the cause of the installation failure?
A./smit.log
B./image.data
C./tmp/bos/smit.log
D./var/adm/ras/bosinstlog
23.A file system shows the following output from the df command:
However, a long listing of the file /tmp/myfile shows the following:
2066 -rwxrwxrwx 1 lucinda staff 100000000 May 07 14:41 /tmp/myfile
Which of the following file types is /tmp/myfile?
A. Dense
B. Sparse
C. Fragmented
D. Compressed
24.A user on system sys01 rlogins to system sys05 and attempts to run an X-Windows based application and receives the error message unable to open display. What should the user do to resolve this problem?
A.Type export DISPLAY=sys01:0 on sys01.
B.Type export DISPLAY=sys01:0 on sys05.
C.Type export DISPLAY=sys05:0 on sys01.
D.Type export DISPLAY=sys05:0 on sys05.
25.What type of protocol or protocols should be used by the spray command, by default, to send a one-way stream of packets to the host?
A.UDP
B.TCP
C.ICMP
D.RPC, UDP