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NEW QUESTION 41
CORRECT TEXT
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server.
How will make successfully ping to 192.168.1.0/24 Network's Host?
Answer:
Explanation:
vi/etc/sysconfig/networkGATEWAY=192.168.0.254ORvi/etc/sysconf/network-scripts/ifcfg-eth0DEVICE=eth0BOOTPROTO=staticONBOOT=yesIPADDR=192.168.0.?NETMASK=255.255.255.0GATEWAY=192.168.0.254
servicenetworkrestartGatewaydefinesthewaytoexitthepackets.AccordingtoquestionSystemworkingasarouterfortwonetworkshaveIPAddress192.168.0.254and192.168.1.254.
NEW QUESTION 42
CORRECT TEXT
Who ever creates the files/directories on archive group owner should be automatically should be the same group owner of archive.
Answer:
Explanation:
chmodg+s/archive
Verifyusing:ls-ld/archivePermissionshouldbelike:drwxrws---2rootsysuser4096Mar1618:08/archiveIfSGIDbitissetondirectorythenwhoeveryuserscreatesthefilesondirectorygroupownerautomaticallytheownerofparentdirectory.TosettheSGIDbit:chmodg+sdirectoryToRemovetheSGIDbit:chmodg-sdirectory
NEW QUESTION 43
CORRECT TEXT
Configure autofs.
Configure the autofs automatically mount to the home directory of LDAP, as required:
server.domain11.example.com use NFS to share the home to your system. This file system contains a pre
configured home directory of user ldapuserX.
Home directory of ldapuserX is:
server.domain11.example.com /home/guests/ldapuser
Home directory of ldapuserX should automatically mount to the ldapuserX of the local /home/guests Home directory's write permissions must be available for users ldapuser1's password is password
Answer:
Explanation:
yuminstall-yautofsmkdir/home/rehome
/etc/auto.master/home/rehome/etc/auto.ldapKeepthenexitcp/etc/auto.misc/etc/auto.ldap
/etc/auto.ldapldapuserX-fstype=nfsrwserver.domain11.example.com:/home/guests/Keepthenexitsystemctlstartautofssystemctlenableautofssu-ldapuserX//testIftheabovesolutionscannotcreatefilesorthecommandpromptis-bash-4.2$itmaybeexistmulti-leveldirectorythisneedstochangetheserver.domain11.example.com:/home/guests/toserver.domain11.example.com:/home/guests/ldapuserX.Whatismulti-leveldirectory?ItmeansthereisadirectoryofldapuserXunderthe/home/guests/ldapuserXinthequestions.Thisdirectoryistherealdirectory.
NEW QUESTION 44
CORRECT TEXT
Configure a task: plan to run echo hello command at 14:23 every day.
Answer:
Explanation:
#whichecho
#crontab-e2314***/bin/echohellos
#crontab-l(Verify)
NEW QUESTION 45
CORRECT TEXT
You have a domain named www.rhce.com associated IP address is 192.100.0.2. Configure the Apache web server by implementing the SSL for encryption communication.
Answer:
Explanation:
vi/etc/httpd/conf.d/ssl.conf<VirtualHost192.100.0.2>ServerNamewww.rhce.comDocumentRoot/var/www/rhceDirectoryIndexindex.htmlindex.htmServerAdminwebmaster@rhce.comSSLEngineonSSLCertificateFile/etc/httpd/conf/ssl.crt/server.crtSSLCertificateKeyFile/etc/httpd/conf/ssl.key/server.key</VirtualHost>
cd/etc/httpd/conf3maketestcert
Createthedirectoryandindexpageonspecifiedpath.(Indexpagecandownloadfromftp://server1.example.comatexamtime)
servicehttpdstart|restart
chkconfighttpdonApachecanprovideencryptedcommunicationsusingSSL(SecureSocketLayer).Tomakeuseofencryptedcommunicationaclientmustrequesttohttpsprotocolwhichisusesport443.ForHTTPSprotocolrequiredthecertificatefileandkeyfile.
NEW QUESTION 46
CORRECT TEXT
Binding to an external validation server.
System server.domain11.example.com provides a LDAP validation service, your system should bind to this service as required:
Base DN of validation service is dc=example,dc=com
LDAP is used for providing account information and validation information Connecting and using the certification of http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to encrypt
After the correct configuration, ldapuser1 can log into your system, it does not have HOME directory until you finish autofs questions, ldapuser1 password is password.
Answer:
Explanation:
yum-yinstallsssdauthconfig-gtkkrb5-workstationauthconfig-gtk//openthegraphicalinterfaceModifyuseraccountdatabasetoldapfillupDNandLDAPSERVERasquestionsrequireduseTLStoencryptconnectionsmakingtickwritehttp://server.domain11.example.com/pub/EXAMPLE-CA-CERTtodownloadcaauthenticationmethodchooseldappassword.Youcantestiftheldapuserisaddedbythefollowingcommand:Idldapuser1Note:userpassworddoesn'tnotneedtoset
NEW QUESTION 47
CORRECT TEXT
You are new System Administrator and from now you are going to handle the system and your main task is Network monitoring, Backup and Restore. But you don't know the root password. Change the root password to redhat and login in default Runlevel.
Answer:
Explanation:
WhenyouBoottheSystemitstartsondefaultRunlevelspecifiedin/etc/inittab:Id:?:initdefault:WhenSystemSuccessfullybootitwillaskforusernameandpassword.Butyoudon'tknowtheroot'spassword.Tochangetherootpasswordyouneedtobootthesystemintosingleusermode.Youcanpassthekernelargumentsfromthebootloader.1.RestarttheSystem.2.YouwillgetthebootloaderGRUBscreen.3.Pressaandtype1orsforsinglemoderoroot=LABEL=/rhgbqueits4.SystemwillbootonSingleUsermode.5.Usepasswdcommandtochange.6.Pressctrl+d
NEW QUESTION 48
CORRECT TEXT
Configure /var/tmp/fstab Permission.
Copy the file /etc/fstab to /var/tmp/fstab. Configure var/tmp/fstab permissions as the following:
Owner of the file /var/tmp/fstab is Root, belongs to group root
File /var/tmp/fstab cannot be executed by any user
User natasha can read and write /var/tmp/fstab
User harry cannot read and write /var/tmp/fstab
All other users (present and future) can read var/tmp/fstab.
Answer:
Explanation:
cp/etc/fstab/var/tmp/
/var/tmp/fstabviewtheownersetfacl-mu:natasha:rw-/var/tmp/fstabsetfacl-mu:haryy:---/var/tmp/fstabUsegetfacl/var/tmp/fstabtoviewpermissions
NEW QUESTION 49
CORRECT TEXT
Your System is going use as a router for 172.24.0.0/16 and 172.25.0.0/16. Enable the IP Forwarding.
1. echo "1" >/proc/sys/net/ipv4/ip_forward
2. vi /etc/sysctl.conf net.ipv4.ip_forward=1
Answer:
Explanation:
/procisthevirtualfilesystemcontainingtheinformationabouttherunningkernel.Tochangetheparameterofrunningkernelyoushouldmodifyon/proc.FromNextrebootthesystemkernelwilltakethevaluefrom/etc/sysctl.conf.
NEW QUESTION 50
CORRECT TEXT
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50 servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from all servers into on LOG Server.
How will you configure the LOG Server to accept logs from remote host?
Answer:
Explanation:
Bydefaultsystemacceptthelogsonlygeneratedfromlocalhost.ToaccepttheLogfromotherhostconfigure:vi/etc/sysconfig/syslogSYSLOGD_OPTIONS="-m0-r"Where-m0disables'MARK'messages.-renablesloggingfromremotemachines-xdisablesDNSlookupsonmessagesreceivedwith-rservicesyslogrestart
NEW QUESTION 51
CORRECT TEXT
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
Answer:
Explanation:
groupaddadminuseradd-Gadminmaryuseradd-Gadminaliceuseradd-s/sbin/nologinbobbyecho"password"|passwd--stdinmaryecho"password"|passwd--stdinaliceecho"password"|passwd--stdinbobby
NEW QUESTION 52
CORRECT TEXT
Configure a task: plan to run echo "file" command at 14:23 every day.
Answer:
Explanation:
(a)Createdasadministrator
#crontab-unatasha-e2314***/bin/echo"file"(b)Createdasnatasha
#su-natasha$crontab-e2314***/bin/echo"file"
NEW QUESTION 53
CORRECT TEXT
Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).
Answer:
Explanation:
if=/dev/zeroof=/swapfilebs=1Mcount=600mkswap/swapfile/etc/fstab:/swapfileswapswapdefaults00mount-a
NEW QUESTION 54
CORRECT TEXT
Configure iptables, there are two domains in the network, the address of local domain is 172.24.0.0/16 other domain is 172.25.0.0/16, now refuse domain 172.25.0.0/16 to access the server.
Answer:
Explanation:
below
iptables-F
serviceiptablessave
iptables-AINPUT-s172.25.0.0/16-jREJECT
serviceiptablessave
serviceiptablesrestart
NEW QUESTION 55
CORRECT TEXT
One Package named zsh is dump on ftp://server1.example.com under /pub/updates directory and your FTP server is 192.168.0.254. Install the package zsh.
Answer:
Explanation:
rpm-ivhftp://server1/example.com/pub/updates/zsh-*or
Logintoftpserver:ftpftp://server1.example.comusinganonymoususer.
Changethedirectory:cdpubandcdupdates
Downloadthepackage:mgetzsh-*
Quitfromtheftpprompt:bye
Installthepackage
rpm-ivhzsh-*
Verifyeitherpackageisinstalledornot:rpm-qzsh
NEW QUESTION 56
CORRECT TEXT
Configure the permissions of /var/tmp/fstab
Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:
the file /var/tmp/fstab is owned by the root user.
the file /var/tmp/fstab belongs to the group root.
the file /var/tmp/fstab should not be executable by anyone.
the user natasha is able to read and write /var/tmp/fstab.
the user harry can neither write nor read /var/tmp/fstab.
all other users (current or future) have the ability to read /var/tmp/fstab.
Answer:
Explanation:
cp-a/etc/fstab/var/tmp
cd/var/tmp
ls-l
getfacl/var/tmp/fstab
chmodugo-x/var/tmp/fstab[Noneedtodothistherewon'tbeexecutepermissionforthefilebydefault]
#setfacl-mu:natasha:rw/var/tmp/fstab
#setfacl-mu:harry:0/var/tmp/fstab(zero)[Readpermissionwillbethereforalltheusersbydefault.Checkitusingls-l/var/tmp/fstab]Verifyby[ls-la/var/tmp/fstab]
NEW QUESTION 57
CORRECT TEXT
Create one partitions having size 100MB and mount it on data.
Answer:
Explanation:
1.Usefdisk/dev/hdatocreatenewpartition.2.TypenForNewpartitions.3.ItwillaskforLogicalorPrimaryPartitions.Presslforlogical.4.ItwillaskfortheStartingCylinder:UsetheDefaultbypressingEnterKey.5.TypetheSize:+100MyoucanspecifyeitherLastcylinderofsizehere.6.PressPtoverifythepartitionslistsandrememberthepartitionsname.7.Presswtowriteonpartitionstable.8.EitherRebootorusepartprobecommand.9.Usemkfs-text3/dev/hda?ORmke2fs-j/dev/hda?Tocreateext3filesystem.vi/etc/fstabWrite:/dev/hda?/dataext3defaults12VerifybymountingoncurrentSessionsalso:mount/dev/hda?/data
NEW QUESTION 58
CORRECT TEXT
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 400MB. Make successfully that the size of Logical Volume 200MB without losing any data. The size of logical volume 200MB to 210MB will be acceptable.
Answer:
Explanation:
FirstcheckthesizeofLogicalVolume:lvdisplay/dev/vo/myvol
Makesurethatthefilesystemisinaconsistentstatebeforereducing:
#fsck-f/dev/vo/myvol
Nowreducethefilesystemby200MB.
#resize2fs/dev/vo/myvol200M
Itisnowpossibletoreducethelogicalvolume.
#lvreduce/dev/vo/myvol-L200M
VerifytheSizeofLogicalVolume:lvdisplay/dev/vo/myvol
Verifythatthesizecomesinonlineornot:df-h
NEW QUESTION 59
CORRECT TEXT
Create the following users, groups, and group memberships:
A group named adminuser.
A user natasha who belongs to adminuser as a secondary group A user harry who also belongs to adminuser as a secondary group.
A user sarah who does not have access to an interactive shell on the system, and who is not a member of adminuser, natasha, harry, and sarah should all have the password of redhat.
Answer:
Explanation:
groupaddsysmgrs
useradd-GsysmgrsNatasha
Wecanverifythenewlycreateduserbycat/etc/passwd)
#useradd-Gsysmgrsharry
#useradd-s/sbin/nologinsarrh
#passwdNatasha
#passwdharry
#passwdsarrah
NEW QUESTION 60
CORRECT TEXT
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.
Answer:
Explanation:
lvextend-L190M/dev/mapper/vgsrv-commonresize2fs/dev/mapper/vgsrv-common
NEW QUESTION 61
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