发信人: superbug (红蚂蚁), 信区: Computer
标 题: AIX 4.3 SYSTEM SUPPORT SAMPLE TEST189
发信站: 紫 丁 香 (Mon Oct 25 15:55:08 1999), 转信
【 以下文字转载自 Unix 讨论区 】
【 原文由 liudehua 所发表 】
AIX V4.3 System Support
Sample Test 189
1.After a power failure, the system attempts to reboot but hangs on
LED 557. This indicates
file system corruption. Which of the following actions should be
taken to recover?
A.Restore /etc/filesystems from mksysb.
B.Execute chfs -a size=+1 against all filesystems in rootvg.
C.From a maintenace shell run lppchk -v against all filesets
installed.
D.From a maintenance shell run fsck -y against all filesystems
in rootvg.
2.Customer XYZ discovered that one of their hard drives, hdisk3, was
bad. The drive contains
volume group data3vg which was used by an application many years
ago. Since they do not
need to keep this information, they decided to simply remove the
drive. After rebooting,
the physical volume for hdisk3 is still listed in the volume
group descriptor area (VGDA).
Which of the following commands can be used to delete the
physical volume from data3vg?
A.syncvg
B.reducevg
C.synclvodm
D.reducelvodm
3.A client is setting up a 128-port asynchronous adapter with 2
remote RANs. The 2 SA
devices (RANs) are not available to the system. In addition, node
1 LED is displaying AC
and node 2 LED is displaying En. What is most likely the cause of
this 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.
4.The lpstat output indicates plainview cannot communicate with
beaumont. The system
administrator runs a ping command from plainview to beaumont and
receives ping packets
back. Which of the following actions can be performed so
plainview can print to beaumont?
Queue
Dev
Status
Job
Files
User
PP %
Blks
Cp
Rnk
-------
-----
---------
---
-----
------
----
--
-----
---
---
lp0
lp0
RUNNING
1
/tmp/report
root
�
7911
1
1
rq0
@beau
READY
�
�
�
�
�
�
�
rq0
rq0
HOST_DOWN
�
�
�
�
�
�
�
A.Execute enq -d on plainview.
B.Start the lpd daemon on beaumont.
C.Start the lpd daemon on plainview.
D.Add the hostname beaumont hostname to plainview's
/etc/hosts.lpd file.
5.Company ABC has sent a support specialist to a customer site in
response to a complaint
about slow system performance. The support specialist verified
unusually slow performance
on the customer's system, and is attempting to find the source of
the problem using the
vmstat command. Give the output of the vmstat command below, what
is the most likely cause
of the performance problem?
kthr
------
�
memory
---------------
�
page
--------------------------
�
faults
---------------
�
cpu
---------------
r
b
�
avm
fre
�
re
pi
po
fr
sr
cy
in
�
sy
cs
us
�
sy
id
wa
0
0
�
5311
48642
�
0
0
0
0
0
0
102
�
4
11
0
�
0
99
0
0
1
�
52197
1756
�
0
78
24
0
0
0
206
�
157
26
23
�
11
52
14
0
1
�
51192
2751
�
0
82
26
0
0
0
204
�
24
22
26
�
13
51
10
A.excessive system paging
B.high user process activity
C.excessive system CPU interrupts
D.poor disk drive I/O response time
6.A client is experiencing performance problems and runs the iostat
command. The output of
iostat is shown below. What can be concluded from this output?
tty:
�
�
tin
0.0
�
tout
170.2
�
avg-cpu:
�
�
%
user
7.1
�
%
sys
12.1
�
%
idle
0.8
�
%
iowait
80.0
Disks:
hdisk0
hdisk1
cd0
�
�
%
tm_act
0.0
0.0
55.9
�
Kbps
0.0
0.0
622.4
�
tps
0.0
0.0
155.6
�
Kb_read
0
0
1250
�
Kb_wrtn
0
0
8
�
�
�
tty:
�
�
tin
0.0
�
tout
170.2
�
avg-cpu:
�
�
%
user
5.1
�
%
sys
14.1
�
%
idle
0.8
�
%
iowait
80.0
Disks:
hdisk0
hdisk1
cd0
�
�
%
tm_act
0.0
0.0
55.9
�
Kbps
0.0
0.0
622.4
�
tps
0.0
0.0
155.6
�
Kb_read
0
0
1200
�
Kb_wrtn
0
0
0
�
�
�
A.The machine needs a memory upgrade.
B.Another ATM card needs to be added.
C.A user program is causing a system loop.
D.The data on CDROM should be moved to disk.
7.A system administrator is able to login to system A from the
console. Other systems can
ping system A, but the system administrator is unable to telnet
or rlogin to system A from
any other system on the network. Which of the following is the
most likely cause of this
problem?
A.inetd is not running on system A.
B.routed is not running on system A.
C.The routing table on system A is corrupted.
D.The domain name server is not functioning correctly.
8.After booting, NFS is not available. Based on Exhibit A (shown
below), what can be
concluded?
A./etc/rc.nfs is corrupted.
B.The /var filesystem is corrupted.
C.The TCP/IP initialization is incorrect.
D.The start NFS call should read "rcnfs:1:wait:/etc/rc.nfs >
/dev/console 2>&1.
***** Exhibit A ************* init:2:initdefault:
brc::sysinit:/sbin/rc.boot 3 >/dev/console 2>&1 # Phase 3 of
system boot
powerfail::powerfail:/etc/rc.powerfail 2>&1 | alog -tboot >
/dev/console # Power Failure
Detection
rc:2:wait:/etc/rc 2>&1 | alog -tboot > /dev/console # Multi-User
checks
fbcheck:2:wait:/usr/sbin/fbcheck 2>&1 | alog -tboot >
/dev/console # run /etc/firstboot
srcmstr:2:respawn:/usr/sbin/srcmstr # System Resource Controller
rctcpip:2:wait:/etc/rc,tcpip > /dev/console 2>&1 # Start TCP/IP
daemons
rcnfs:2:wait:/etc/rc.nfs > /dev/console 2>&1 # Start NFS Daemons
cron:2:respawn:/usr/sbin/cron
piobe:2:wait:/usr/lib/lpd/pio/etc/pioinit >/dev/null 2>&1 # pb
cleanup
qdaemon:2:wait:/usr/bin/startsrc -sqdaemon
writesrv:2:wait:/usr/bin/startsrc -swritesrv
uprintfd:2:respawn:/usr/sbin/uprintfd
logsymp:2:once:/usr/lib/ras/logsymptom # for system dumps
pmd:2:wait:/usr/bin/pmd > /dev/console 2>&1 # Start PM daemon
diagd:2:once:/usr/lpp/diagnostics/bin/diagd >/dev/console 2>&1
dt:2:wait:/etc/rc.dt
cons:0123456789:respawn:/usr/sbin/getty /dev/console
cfgmceh:2:once:/usr/lib/methods/cfgmceh >/dev/null 2>&1 #
Configure Machine Check Error
Handler
infod:2:once:startsrc -s infod
browser:2:respawn:/usr/lpp/xlC/browser/pdnsd
9.A long listing of the file, /usr/local/bin/scan_it, is shown. When
the command is executed
as a nonroot user, it fails to run as root. What would be the
first action to take?
-rwsr-xr-w 1 root system 76528 Mar 13 06:13 /usr/local/bin/scan_it
A.file /usr/local/bin/scan_it
B.chmod 4764 /usr/local/bin/scan_it
C.Run the command in the background.
D.Copy /usr/local/bin/scan_it to the own home directory and
execute it from there.
10.If a user runs the command "crontab /tmp/mycron", what would be
the result of this
command?
A.The user's crontab file would be replaced with the contents of
/tmp/mycron.
B.The entries contained in /tmp/mycron would be appended to the
user's crontab file.
C.An error message would be generated. This is not valid syntax
for the crontab command.
D.The current contents of the user's crontab file would be
written to the file
/tmp/mycron.
11.At the XYZ Company, a nightly backup is performed to the tape
drive using mksysb scheduled
by cron. Where can the support specialist look to find the output
of the mksysb command?
A./smit.log
B./var/adm/messages
C./var/spool/mail/root
D./var/spool/cron/cronlog
12.A technical specialist working on an RS/6000 model 397 running AIX
4.3.1 determines that
the system needs to be reinstalled with the same version of the
operating system. What is
the best method to perform the reinstallation without erasing
/home and /data, a
filesystem used to store project data?
A.reinstall bos.rte from the installation media
B.perform a preservation installation from a mksysb
C.perform a migration installation from the installation media
D.perform a preservation installation from the installation
media
AIX V4.3 System Support
Sample Test 189
ANSWER KEY:
1.D
2.B
3.A
4.B
5.A
6.D
7.A
8.C
9.A
10.A
11.C
12.D
--
※ 来源:·紫 丁 香 bbs.hit.edu.cn·[FROM: citslab.hit.edu]
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※ 转载:．紫 丁 香 bbs.hit.edu.cn．[FROM: 202.118.239.7]
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