Oracle 1Z0-820 Certification Sample Questions and Answers

1Z0-820 PDF, 1Z0-820 Dumps PDF Free Download, 1Z0-820 Latest Dumps Free PDF, Upgrade Solaris System Administrator PDF DumpsThe Oracle Upgrade Solaris System Administrator (1Z0-820) Sample Question Set is designed to help you prepare for the Oracle Certified Professional Oracle Solaris 11 System Administrator (upgrade) certification exam. To become familiar with the actual Oracle Certification exam environment, we suggest you try our Sample Oracle 1Z0-820 Certification Practice Exam.

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Oracle 1Z0-820 Sample Questions:

01. Several non-global zones share buildhost, and one of them is consuming most of the CPU and memory. You want a single continuously updating display that totals resource usage per zone rather than per individual process.
Which command produces that per-zone summary?
a) prstat -m
b) prstat -Z
c) prstat -t
d) prstat -a
 
02. app-prod must absorb the contents of a legacy NFS-mounted filesystem into a brand-new ZFS dataset, and applications need to begin reading and writing that new dataset immediately while the bulk copy proceeds in the background.
Which approach implements this on Oracle Solaris 11?
a) Run zfs send -R on the NFS source and pipe it into zfs receive -F app-prod/data, which streams the legacy files across while clients keep reading and writing the new target live throughout the copy.
b) Use zpool split to peel the source data off into the new dataset while applications keep writing to it.
c) Schedule an rsync cron job from the NFS mount into the mounted dataset and mark it shadow=on so shadowd resumes any partial copy.
d) Create the dataset with the shadow property aimed at the source (zfs create -o shadow=nfs://oldhost/export app-prod/data); shadowd then migrates the rest in the background while it stays live.
 
03. Host dbnode2 must keep IP connectivity if either of its two access switches fails. Its two NICs are cabled to two independent switches that are not stacked and do not act as a single LACP peer.
Which mechanism satisfies the redundancy requirement?
a) Configure an IPMP group across the two interfaces.
b) Configure a link aggregation with LACP across the two NICs.
c) Configure ILB across the two interfaces.
d) Create a VNIC over each NIC and join them with an etherstub.
 
04. You must decide whether dbnode2 genuinely needs more physical memory or is merely caching aggressively.
Which two observations are the strongest evidence of real memory pressure?
(Choose two.)
a) A large number of established TCP connections shown by netstat -an at peak load, read as memory being consumed per socket.
b) A low free-memory value on its own, regardless of the scan rate or any paging activity shown alongside it in vmstat.
c) Significant anonymous page-outs to swap (po) that persist rather than appearing only in brief bursts.
d) A sustained high scan rate (sr) in vmstat, showing the page scanner working continuously to reclaim pages.
e) A high %b value for the boot disk reported by iostat -xnz during the workload, taken as proof of paging pressure.
 
05. A consolidation project involves two moves: relocating an existing non-global zone from one Oracle Solaris 11 host to another, and folding a retiring physical Oracle Solaris 10 server into a branded zone. The team must classify each as V2V or P2V and choose the correct tooling.
Which two statements accurately distinguish these migration paths?
(Choose two.)
a) The P2V move captures the physical Solaris 10 system into an archive and installs it into a solaris10 branded zone via zoneadm install -a.
b) V2V is only valid between two hosts running identical package levels, so the update-on-attach option is never needed when the zone is reattached.
c) Both paths require running zoneadm detach on the source system before the environment can be archived and moved.
d) P2V produces a Kernel Zone under the solaris-kz brand, whereas V2V always produces a standard non-global zone on the target host.
e) The V2V move detaches the existing zone, archives its zonepath, and reattaches it on the target host with zoneadm attach.
 
06. During a design review, engineers debate when to deploy a Kernel Zone versus a standard non-global zone on Oracle Solaris 11.
Which two statements are true of a Kernel Zone but not of a standard non-global zone?
(Choose two.)
a) It shares the global zone's kernel and process scheduler to minimize overhead, so it cannot be patched independently of the host.
b) It maintains its own separate boot environment and kernel memory, isolating it from a global-zone kernel fault.
c) It cannot enforce any CPU or memory resource controls because it virtualizes the kernel independently of the global zone.
d) It must be configured as a solaris10 branded zone before it can boot its own separate kernel on the host.
e) It can be updated to a kernel and OS version independent of the global zone's.
 
07. After running js2ai against a collection of JumpStart profiles and sysidcfg files, an admin inspects the results before deploying anything.
Which two statements about js2ai are accurate?
(Choose two.)
a) It generates AI manifest and SC profile files from the JumpStart inputs
b) It performs a best-effort conversion whose output usually needs manual review and completion
c) It boots and installs the client directly over the network the moment conversion completes
d) It guarantees a fully working, deploy-ready manifest and SC profile that need no further editing at all
e) It converts the installed SVR4 packages into equivalent IPS packages inside the local repository
 
08. Monitoring flags web01 for 'low free memory'. On inspection, vmstat 5 shows a small free-memory value but a scan rate that stays at or near zero, and there are no page-outs.
What is the correct interpretation?
a) There is a memory leak; free memory can only fall this low if some long-running process is steadily failing to release the allocations it makes.
b) The system is not memory-constrained; a scan rate near zero with no page-outs means no shortage, and the low free figure largely reflects the ZFS ARC, which is reclaimable on demand.
c) Swap space is exhausted; a low free value always indicates that anonymous pages can no longer be paged out, and swap -l would report zero blocks free.
d) The system is thrashing; a low free-memory value on its own proves the page scanner cannot keep up with demand, so more RAM must be added and the swap slice enlarged before the next batch window.
 
09. Batch jobs on buildhost are missing their completion windows and you suspect a storage bottleneck rather than a CPU or network limit.
Which two approaches most directly help confirm and attribute the disk I/O problem?
(Choose two.)
a) Use DTrace with the io provider to attribute physical I/O to the files and processes responsible for it.
b) Run prstat -Z to measure the per-zone network bandwidth consumed during the run and blame the busiest zone.
c) Run netstat -i to count the interface input and output errors that are presumed to be slowing the batch read operations.
d) Run iostat -xnz to find any device whose %b and service time (asvc_t) stay consistently high under the batch load.
e) Run coreadm to capture a core file of each batch process and inspect the I/O counters presumed to be embedded in the dump.
 
10. Users report that app-prod has become sluggish during nightly batch loads. You run iostat -xnz 5 and see a steady pattern:
extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device / 3.2 188.6 96.4 9240.7 0.0 1.9 0.0 9.8 0 97 c0t5000A0d0 / 12.4 40.1 512.0 1620.3 0.0 0.2 0.0 3.1 0 21 c0t5000B1d0
What does this output most strongly indicate?
a) Physical memory is exhausted, forcing the paging activity that surfaces as the elevated kw/s column on the busy device, which a matching swap -l would show as a nearly consumed reservation.
b) The device is idle and healthy, since a %b value that sits below 100 always leaves ample I/O headroom, and the low asvc_t on the second device proves the first cannot be queuing work either.
c) The CPUs are saturated, because the high w/s value on the first device reflects processor run-queue depth, and mpstat would show the same threads pinned rather than write operations issued per second.
d) One storage device is saturated: c0t5000A0d0 shows %b near 100 with a high active queue (actv) and service time (asvc_t), marking it as the I/O bottleneck.

Answers:

Question: 01

Answer: b

Question: 02

Answer: d

Question: 03

Answer: a

Question: 04

Answer: c, d

Question: 05

Answer: a, e

Question: 06

Answer: b, e

Question: 07

Answer: a, b

Question: 08

Answer: b

Question: 09

Answer: a, d

Question: 10

Answer: d

 

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