Oracle 1z0-105 問題集

質問 1：
Examine the parameters shown using the sysctl command relating to panic situations:
[root@WAYOUT etc]# sysctl -a |grep panic |grep -v hung
kernel.panic = 0
kernel.panic_on_oops = 0
kernel.softlockup_panic = 0
kernel.unknown_nmi_panic = 0
kernel.panic_on_unrecovered_nmi = 0
kernel.panic_on_io_nmi = 0 kernel.panic_on_oom = 2
[root@WAYOUT etc]# sysctl -a |grep hung
kernel.hung_task_panic = 0
kernel.hung_task_chek_count - 4194304
kernel.hung_task_timeout_secs = 120
kernel.hung_task_warnings = 10
Which two statements are true about system behavior?
A. The kernel always panics if an out-of-memory condition arises.
B. The kernel tries to kill some memory-consuming processes to avoid a panic if an out-of-memory condition arises.
C. The kernel panics if a user thread sleeps in theTASK_UNINTERRUPTABLEstate for more than 120 seconds.
D. The kernel delays panic for a few seconds if a bug is encountered to allow theklogdkernel logging daemon to log theoopsoutput.
E. The kernel panics if a kernel thread sleeps in theTASK_UNINTERRUPTABLEstate for more than 120 seconds.
F. The kernel attempts to continue if a bug is encountered.
正解：C,E

質問 2：
Which two statements are true about building binary RPMs using rpmbuild?
A. Only theROOTuser can install source RPMs.
B. Using customer-complied binary RPMs is not supported by Oracle.
C. A binary RPM for a given hardware platform can be built on another hardware platform.
D. Building a binary RPM will always generate a new source RPM.
E. Building a source RPM always produces exactly one binary RPM.
F. Only theROOTuser can create binary RPMs.
正解：B,F

質問 3：
Which three statements are true about an OpenLDAP server?
A. In can be used to store hostnames and their IP addresses.
B. /etc/openldap.confis the main configuration file for the LDAP server.
C. LDAP entries are stored in a flat namespace.
D. It can be used to store users and groups.
E. It can replicate entries synchronously to another OpenLDAP server.
正解：B,C,D

質問 4：
Which command can be used to display the parameters of a given cgroup in the cpuset subsystem?
A. lssubsys | grep group | grep cpuset
B. cgget -g cpuset cgroup
C. lscgroup | grep group | grep cpuset
D. cat /cgroup/cpuset/cgroup/params
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
You have a mounted mirrored btrfs file system in RAID-1 on /btrfs: # btrfs filesystem show Label: 'Btrfs'uuid:7bfe3239-47ee-442b-b9f8-49f88b6b1be4 Total devices 2 FS bytes used 250.46MB devid 2 size 4.88GB used 1.54GB path /dev/sdd devid 1 size 4.88GB used 1.54GB path /dev/sdc You found an error on one device: #btrfs scrub start -B -d -r /btrfs scrub device /dev/sdc (id 1) done scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds total bytes scrubbed: 250.34MB with 0 errors scrub device /dev/sdd (id2) done scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds total bytes scrubbed: 250.39MB with 26 errors error details: read=13 csum=13 corrected errors: 13, uncorrectable errors: 0, unverified errors: 0 Which statements repairs the corrupted blocks?
A. fsck -t btrfs /btrfs
B. fsck.btrfs -f /dev/sdd
C. btrfs scrub start /dev/sdd
D. btrfs scrub/dev/sdc
正解：C

質問 6：
Which statement is true about OCFS2 file system creation?
A. Disabled features are prefixed with a dash.
B. After the cluster stack is online, newOCFS2file systems can be created without specifying any additional cluster configuration parameters.
C. Themkfs.ocfs2utility allows users to specify the level of cache coherency between nodes.
D. Users can toggle file system features online on mounted volumes.
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 7：
You dynamically configure a system to concurrently run tasks A1 and A2 using these commands: # mkdir /cgroup/cpu # mount -t cgroup -o cpu cpu /cgroup/cpu # mkdir /cgroup/cpu/A1 # mkdir /cgroup/cpu/A2 # echo 5 > /cgroup/cpu/A1/cpu.shares # echo 5 > /cgroup/cpu/A2/cpu.shares # mkdir /cgroup/cpuacct # mount -t cgroup -o cpuacct cpuacct /cgroup/cpuacct You want to generate a /etc/cgconfig.conf configuration fail that contains the current cgroup
configuration on the system. Which command would you use?
A. cgset
B. cgcreate
C. lscgroup
D. cgsnapshot
E. cgclassify
正解：A

質問 8：
Examine this command and its output: # yum history list Loaded plugins: security ID Login user Data and time Action(s) Altered 3 <oracle> 2014-07-29 13:34 Install 3 2 <oracle> 2014-07-29 13:33 Install 7 1
<oracle>
2014-07-29 13:33
Install
history list
Which command must you use to undo the last two yum transactions?
A. # yum history undo last-3
B. # yum history rollback 2
C. # yum history undo last-1
D. # yum history rollback 3
正解：B