[long] Oubtfuls questions on test199 (from Redbook)???
From: Michael (azmk_at_gazeta.pl)
Date: 06/07/03
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Date: 7 Jun 2003 07:29:55 -0700
I'm learning to the test199 and in the Redbook I have found the
folowing questions:
1.
A system administrator has just moved an Ethernet adapter to another
slot,
removed the old definition, and added the IP address and subnet mask
just as
before. The netstat and ifconfig commands show the interface just as
before, but the system administrator still cannot communicate with any
other
servers. Which of the following could cause this problem?
A. The connecter type has changed to BNC.
B. The adapter speed has changed to 10 Mbps.
C. The adapter should be removed and reseated.
D. The drivers were not reloaded after moving the adapter.
AND TEHE CORRECT ANSWER IS A - WHY !?!??!
2.
After booting, NFS is not available. Based on the exhibit, what can be
concluded?
A. etc/rc.nfs is corrupted.
B. The /var file system 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 pertaining to question 2:
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
WHY THE CORRECT ANSWER IS C ?
3.
256 IBM ^ Certification Study Guide - pSeries AIX System Support
A system has a 128-port controller with 130 TTYs configured total for
the
system and the terminal input and output is slowing down. The console
is
exhibiting the same behavior. Systems support runs the netstat,
vmstat, and
ps aux commands. Based on the outputs of these commands, what needs to
be done to remedy the problem?
# vmstat
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
0 0 9778 1262 0 0 0 0 0 0 161 72 32 10 15 75 0
0 0 9778 1261 0 0 0 0 0 0 171 161 38 11 20 69 0
0 0 9778 1261 0 0 0 0 0 0 162 119 32 11 20 69 0
0 0 9778 1261 0 0 0 0 0 0 163 119 32 12 20 68 0
0 0 9778 1261 0 0 0 0 0 0 164 120 33 11 20 69 0
# netstat
16 mbufs in use:
0 mbuf cluster pages in use
4 Kbytes allocated to mbufs
110 requests for mbufs denied
0 calls to protocol drain routines
0 sockets not created because sockthresh was reached
# ps aux
USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
root 516 99.1 0.0 4 8 - A Jul 27 2851:18 kproc
root 14474 1.1 1.0 980 1180 - A 08:01:48 1:09
/usr/dt/bin/dtter
root 1032 0.2 0.0 316 232 - A Jul 27 6:51 kproc
root 2258 0.2 1.0 964 1148 - A 08:01:13 0:14
/usr/dt/bin/dtter
user1 2364 0.1 5.0 5468 4768 - A Jul 27 2:02
/usr/lpp/X11/bin/
root 5676 0.0 0.0 116 184 - A Jul 27 1:11 ./sapd
root 4154 0.0 0.0 84 96 - A Jul 27 0:53
/usr/sbin/syncd 6
root 0 0.0 0.0 8 12 - A Jul 27 0:31 swapper
root 4044 0.0 2.0 1808 2008 - A 08:00:43 0:01 dtwm
root 1 0.0 0.0 384 436 - A Jul 27 0:07 /etc/init
root 7740 0.0 1.0 980 1132 - A Jul 27 0:04
/usr/sbin/snmpd
root 774 0.0 0.0 12 16 - A Jul 27 0:03 kproc
user2 3376 0.0 0.0 432 428 - A Jul 27 0:02
/usr/dt/bin/dtlog
user2 8796 0.0 0.0 232 312 - A Jul 27 0:01
/usr/sbin/cron
root 7998 0.0 0.0 272 260 - A Jul 27 0:01
/usr/sbin/tftpd -
root 5196 0.0 1.0 456 532 - A Jul 27 0:01
/usr/bin/cnsview
imnadm 12132 0.0 2.0 1756 1808 - A Jul 27 0:00
/usr/IMNSearch/ht
A. Add another paging space.
B. Increase the value of thewall.
C. Increase the size of paging space.
D. Run kill -9 on the PID of the kproc process.
THE CORRECT ANSWER IS B - but please give me more information about
the wall - what is it?
4.
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
CORRECT ANSWER IS D - but what is RPC ?
- Previous message: Erik Kluit: "Re: 64bit compatibility"
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- Reply: Mark Taylor: "Re: [long] Oubtfuls questions on test199 (from Redbook)???"
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