[Free] 2017(July) Ensurepass Passguide Oracle 1Z0-105 Latest Dumps 51-60

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Oracle Linux 6 Advanced System Administration

QUESTION 51

What is the purpose of thekpartxcommand?

 

A.

It is a graphical XWindows application to manipulate kernel partition tables.

B.

It is a graphical XWindows application to manipulate partition tables on disk.

C.

It prints virtual disk partition tables.

D.

It manipulates and prints virtual disk partition tables.

E.

It creates device maps from partition tables.

 

Correct Answer: E

Explanation:

The kpartx command creates device maps from partition tables. Each guest storage image has a partition table embedded in the file.

 

 

QUESTION 52

Which two occur when you run the command:

 

[root@FAROUT/root] rndc reload

 

A.

They key file/etc/rndc.keyis reloaded.

B.

The configuration file/etc/named.confis reloaded.

C.

Only new zones are reloaded.

D.

All zones are reloaded.

E.

Only changed zones are reloaded.

F.

Only new keys are reloaded.

G.

All keys are reloaded.

 

Correct Answer: AE

 

 

QUESTION 53

You have a mounted mirroredbtrfsfile system in RAID-1 on/btrfs:

 

# btrfs filesystem show

 

Label: `Btrfs’uuid:7bfe3239-47ee-442b-b9f8-49f88b6b1be4

 

Total devices2 FS bytes used 250.46MB

< font style="font-size: 10pt" color="#000000"> 

devid2 size 4.88GB used 1.54GB path /dev/sdd

 

devid1 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.btrfs -f /dev/sdd

B.

fsck -t btrfs /btrfs

C.

btrfs scrub/dev/sdc

D.

btrfs scrub start /dev/sdd

 

Correct Answer: D

 

 

QUESTION 54

Examine the D scrypt:

 

syscall::read:entry,

 

syscall::write:entry

 

/pid == $1/

 

{

 

ts[probefunc] = timestamp;

 

}

 

syscall::read:return,

 

syscall::write:return

 

/pid == $1 && ts[probefunc] != 0/

 

{

 

printf(“%d nsecs”, timestamp ?ts[probefunc]);

 

}

 

Which statement is true about this script?

 

A.

It produces aggregations of system calls made by the process whose PID is passed as a command-line argument represented by $1. You see which system calls are issued, and how many times, over a fixed interval.

B.

It produces elapsed times for reads and writes to the entry and returns DTrace probes for the process whose PID is passed as a command-line argument represented by $1.

C.

It produces elapsed times between entry and return of read and write system calls for the process whose PID is passed as the first command-line argument to the D script, represented by $1.

D.

It produces a measure of useful time spent in read and write system calls for the process whose PID is passed as a command-line argument represented by $1.

 

Correct Answer: A

 

 

QUESTION 55

Examine the two commands and theoutput produced:

 

[root@host03 ~]# iscsiadm -m session

 

iscsiadm: No active sessions.

 

[root@host03 ~]# iscsiadm -m node

 

192.0.2.1:3260,1 iqn.2013-03.com.example.mypc:3

 

192.0.2.1:3260,1 iqn.2013-03.com.example.mypc:2

 

192.0.2.1:3260,1 iqn.2013-03.com.example.mypc:1

 

Which option represents the correct command or commands to establish iSCSI sessions with the target portal192.0.2.1:3260?

 

A.

iscsiadm-m session -1

B.

iscsiadm-m node -1

C.

iscsiadm-m discovery -t st -p 192.0.2.1

iscsiadm-m session -1

D.

iscsiadm-m discovery -t st -p 192.0.2.1

iscsiadm-m host -1

 

Correct Answer: C

 

 

QUESTION 56

What are two ways to invoke the rescue procedure for Oracle Linux while booting from the installation media?

 

A.

Press theEsckey on the Oracle Linux Boot Menu screen.

B.

Press theEsckey on thegrubloader menu.

C.

selecting “Rescue Installed System” on the Oracle Linux Boot Menu screen.

D.

selecting “Rescue Installed System” on thegrubloader menu.

E.

Press the Shift+Ctrl keys on thegrubloader menu.

F.

Press the Shift+Ctrl keys on the Oracle Linux Boot Menu screen.

 

Correct Answer: CF

 

 

QUESTION 57

Which three statements are true aboutBtrfs copy –reflink?

 

A.

Itworks only on the samebtrfsfile system.

B.

It works only on the same subvolumes.

C.

It creates a new link pointing to an existing inode.

D.

It creates a new inode that shares the same disk blocks as the original.

E.

It creates a clone file and disk blocks are duplicated.

 

Correct Answer: ABC

Explanation:

https://blogs.oracle.com/OTNGarage/entry/save_disk_space_on_linux

 

 

QUESTION 58

Identify the two commands that can be used to set SELinux file labels back to their default values.

 

A.

chcon

B.

fixfiles

C.

semanage fcontext

D.

restorecon

E.

matchpathcon

F.

opdate_selinux

 

Correct Answer: AD

 

 

QUESTION 59

What statement describes the iSCSI client system’s iSCSI database?

 

A.

The client maintains a text formatted file,/etc/iscsi/iscsi.db.

B.

The client can use either a local database in the form of a Berkeley DB formatted file in/etc/iscsior a distributed database in the form of Internet StorageNaming Service (iSNS) as its database. It is a decision for the System and StorageAdministration team.

C.

The client maintains a local database in the form of a directory tree structure in/var/lib/iscsi.

D.

The client maintains a local database in the form of a directory tree structure in/etc/iscsi/db.

 

Correct Answer: A

 

 

QUESTION 60

After creating empty mount point/xfs1, you execute the command:

 

# mkfs -t xfs -L /xfs1 -I logdev=/dev/sdd1 /dev/sdh1

 

Which two statements are true about the effects of executing themkfscommand?

 

A.

It fails if there is an existing XFS file system on/dev/sdh1.

B.

It fails if there is an existing XFS log on/dev/sdd1.

C.

It fails if there is an existing XFS file system on/dev/sdd1.

D.

It fails because there is no size specified for the XFS log.

E.

Thexfs1file system is mounted automatically during system startup.

F.

It creates and mounts the/xfs1file system.

 

Correct Answer: DF

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