1z0-105.exam. Number: 1z0-105 Passing Score: 800 Time Limit: 120 min ORACLE. 1z Oracle Linux 6 Advanced System Administration

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1 1z0-105.exam Number: 1z0-105 Passing Score: 800 Time Limit: 120 min ORACLE 1z0-105 Oracle Linux 6 Advanced System Administration

2 Exam A QUESTION 1 Examine the contents of /etc/mail/access: This system is to be used as an MTA or mail gateway for the local LAN network address /24. Which two actions allow this mail host to route for the network? A. Run sendmail again; and the updated file can be accessed automatically. B. Add this line to /etc/mail/access: C. Add this line to /etc/mail/access: D. Add this line to /etc/mail/access: E. Rebuild the access database file after the source files have been modified. Restarting the sendmail service automatically rebuilds the maps. Correct Answer: DE /Reference:

3 QUESTION 2 Which three statements are true about support for the XFS file system in Oracle Linux? A. It is a journaling, extend-based file system. B. It is not supported for the /boot file system. C. It is supported for the root (/) file system. D. It supports user and group disk quotas. E. It is supported only when created on Logical Volumes. F. It has a built-in volume manager. Correct Answer: BDF /Reference: Reference: QUESTION 3 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 /Reference: QUESTION 4 Examine the dtrace command. dtrace q n syscall:::

4 Which two statements are true? A. The command produces minimal output, but this includes the CPU on which the probe fires, the probe ID, and the probe name. B. The dtrace command matches with all probes in the syscall provider. C. The -q option is invalid when not used with an explicit action, as in this case. D. The probe name specification is incorrect and does not match with any probes. This produces an "invalid probe specifier syscall:::" error message. E. The command produces no output. Correct Answer: DE /Reference: QUESTION 5 Which statement describes the default network set up by an Oracle template script? A. The container is isolated from the network. B. A veth device is added to libvirt's virbr0 bridge. C. A macvlan device enables DHCP from the host's network. D. A private interface is routed to Open vswitch. Correct Answer: B /Reference: : By default, the lxc-oracle template script sets up networking by setting up a veth bridge. In this mode, a container obtains its IP address from the dnsmasq server

5 that libvirtd runs on the private virtual bridge network (virbr0) between the container and the host. The host allows a container to connect to the rest of the network by using NAT rules in iptables, but these rules do not allow incoming connections to the container. Both the host and other containers on the veth bridge have network access to the container via the bridge. QUESTION 6 Consider a cgroup configuration in the /etc/cgconfig.conf file: mount { cpuset = /cgroup/a; cpu = /cgroup/a; cpuacct = /cgroup/cpuacct; } group A1 { perm { admin { uid = root; gid = wheel; } task { uid = root; gid = users; } } cpuset { cpuset.mems= 0 ; cpuset.cpus= 0 ; } cpu { cpu.shares= 5 ; } } group A2 { perm { admin { uid = root; admin { uid = root gid = root; } task { uid = root; gid = users; }

6 } cpuset { cpuset.mems= 0 ; cpuset.cpus= 1 ; } cpu { cpu.shares= 5 ; } } Which two statements are true? A. Two cgroup hierarchies and three subsystems are defined; cgroup A1 and A2 are located in the same sgroup hierarchy. B. Two cgroup hierarchies and three subsystems are defined; cgroup A1 and A2 are located in different cgroup hierarchiers. C. Three cgroup hierarchies and three subsystems are defined; cgroup A1 and A2 are located in the same sgroup hierarchy. D. Three cgroup hierarchies and three subsystems are defined; cgroup A1 and A2 are located in different cgroup hierarchiers. E. Any user who is a member of the users group is allowed to move his or her own tasks from the root cgroup to cgroup A1 or cgroup A2. F. Any user who is a member of the users group is allowed to execute tasks in cgroups A1 and A2 and change the cpu.shares parameter in cgroups A1 and A2. Correct Answer: BD /Reference: QUESTION 7 You want to create a new LUN, LUN ID =1, on a new target, target ID = 2. Inspect the current state of targets and LUNs in the output from tgt-admin s. The output is filtered to show only target and LUN associations. [root@edfar9p0 init.d]# tgt-admin s egrep i target lun Target 1: iqn com.example.mypc:1 LUN information: LUN: 0 LUN: 1 LUN: 2 LUN: 3 You want to add a new LUN to a new target by using the /iscsishareddisk/physdisk4.img disk image file. Which two options would you use to do this?

7 A. tgt-setup-lun t 2 tgt-setup-lun d /iscsishareddisk/physdisk4.img t 2 B. tgt-setup-lun d /iscsishareddisk/physdisk4.img n 2 C. tgt-admin --op new \ --mode target \ --tid 2\ --targetname iqn com.example.mypc:2 D. tgt-admin --op new \ --mode logicalunit \ --tid 2 \ --lun 1 \ --backing-store /iscsishareddisk/physdisk4.img E. tgtadm -- op new \ --mode target \ --tid 2\ --targetname iqn com.example.mypc:2 \ --lun 1 \ --backing-store /iscsishareddisk/physdisk4.img F. tgt-admin d /iscsishareddisk/physdisk4.img n 2 Correct Answer: AE /Reference: QUESTION 8 Which statement is true about the net_cls cgroup subsystem? A. It controls the throughput limits for network packets. B. It dynamically sets the priority of network traffic per network interface. C. It enforces a limit on the number of opened sockets. D. It tags network packets with an identifier. Correct Answer: D /Reference:

8 Reference: single/resource_management_guide/ QUESTION 9 You have an unmounted btrfs file system: # btrfs filesystem show Label: Btrfs uuid: 7bfe ee-442b-b9f8-49f88b6b1be4 Total devices 3 FS bytes used MB devid 2 size 4.88GB used 1.06GB path /dev/sdd devid 1 size 4.88GB used GB path /dev/sdc devid 3 size 4.88GB used 1.50GB path /dev/sdb You have these mounted devices: # df h You have a mount point for the btrfs file system: # ls all /btrfs total 0 drwxr-xr-x. 1 root root 0 Aug 12 10:17. dr-xr-xr-x. 1 root root 276 Aug 12 10:36.. Examine these steps: 1. Manual defragment is not needed. Btrfs will defragment it automatically. 2. btrfs device defragment /dev/sdd 3. btrfs filesystem defragment /btrfs 4. btrfs device delete /dev/sdb /btrfs 5. mount UUID=7bfe ee-442b-b9f8-49f88b6b1be4 /btrfs 6. btrfs device delete /dev/sdb /dev/sdd What is the correct order to delete the /dev/sdb device from the btrfs file system and for defragmenting the reduced file system? A. 6, 1 B. 5, 4, 3 C. 5, 6, 4, 3

9 D. 5, 6, 1 E. 4, 2 Correct Answer: B /Reference: QUESTION 10 What statement is true about udev? A. It uses predefined kernel devices in /dev for all combinations of that may be connected to a system to support dynamic device name assignment. B. It dynamically creates kernel devices for only those devices that are connected. C. It produces persistent device names for all devices. D. Its configuration is based on device properties and attributes maintained in devfs. Correct Answer: B /Reference: Reference: QUESTION 11 Consider the features of virtualization modes. Which three statements are correct? A. With full virtualization (FV), all aspects of a guest OS are virtualized. The guest OS running on a virtual machine (VM) can run unmodified. B. With paravirtualization (PV), the paravirtualized guests run a modified version of the guest OS, which communicates with the hypervisor by using hypercalls.

10 C. PV takes advantage of the virtualization hardware extensions offered by the physical server. These hardware extensions are required to run paravirtualized VMs. D. Xen is a type-2 hypervisor that allows guests to run either as fully paravirtualized (PV guests) or as hardware virtualized (HVM guests), with or without paravirtualized drivers. E. The Oracle Linux Unbreakable Enterprise Kernel (UEK) is a PVOPS kernel that contains all paravirtualized drivers and can determine whether the underlying system supports FV or PV operations. Correct Answer: CDE /Reference: QUESTION 12 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/iscsi or a distributed database in the form of Internet Storage Naming Service (isns) as its database. It is a decision for the System and Storage Administration 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 /Reference: QUESTION 13 Which three statements are true about an OpenLDAP server? A. /etc/openldap.conf is the main configuration file for the LDAP server.

11 B. LDAP entries are stored in a flat namespace. C. It can be used to store users and groups. D. In can be used to store hostnames and their IP addresses. E. It can replicate entries synchronously to another OpenLDAP server. Correct Answer: ABC /Reference: QUESTION 14 Which two statements are true about building binary RPMs using rpmbuild? A. Building a source RPM always produces exactly one binary RPM. B. Using customer-complied binary RPMs is not supported by Oracle. C. Only the ROOT user can create binary RPMs. D. Only the ROOT user can install source RPMs. E. A binary RPM for a given hardware platform can be built on another hardware platform. F. Building a binary RPM will always generate a new source RPM. Correct Answer: BC /Reference: QUESTION 15

12 Examine the dtrace command. dtrace n proc:::exec {trace(execname);trace(pid);trace(stringof(arg0));} Which two statements are true? A. The trace(execname) action causes the called program name to be printed. B. The trace(pid) action causes the calling program's process to be printed C. The trace(stringof(arg0)) action causes the called program's first argument to be printed. D. The probe name is exec. E. The probe function is not specified. Correct Answer: CE /Reference: Reference: QUESTION 16 Examine the contents of the /etc/ocfs2/cluster.conf file: node: name = exam2 cluster = mycluster number = 0 ip_address = ip_port = 7777 node: name = exam3 cluster = mycluster number = 1 ip_address = ip_port = 7777

13 clustr: name = mycluster heartbeat_mode = local node_count = 2 Identify the minimum number of commands issued, in the correct order, to create this file. 1. o2cb add-cluster --heartbeat_mode local mycluster 2. o2cb add-node --ip number 1 mycluster exam3 3. o2cb add-cluster mycluster 4. o2cb add-node --ip number 0 mycluster exam2 5. o0cb config-cluster node_count 2 mycluster 6. o2cb configure A. 3, 4, 2 B. 6, 4, 2, 3 C. 6, 4, 2, 5, 3 D. 6, 1, 4, 2 E. 1, 4, 2 F. 1, 4, 2, 5 Correct Answer: C /Reference: QUESTION 17 Examine the two commands and the output produced: [root@host03 ~]# iscsiadm m session iscsiadm: No active sessions. [root@host03 ~]# iscsiadm m node :3260,1 iqn com.example.mypc: :3260,1 iqn com.example.mypc: :3260,1 iqn com.example.mypc:1 Which option represents the correct command or commands to establish iscsi sessions with the target portal :3260? A. iscsiadm m session -1 B. iscsiadm m node -1 C. iscsiadm m discovery t st p

14 iscsiadm m session -1 D. iscsiadm m discovery t st p iscsiadm m host -1 Correct Answer: C /Reference: QUESTION 18 Identify the minimum required steps to configure an NIS master. 1. Ensure that the yptools, ypbind, and ypserv RPMs are installed. 2. Configure and set the NIS domain name. 3. Start the ypserv service. 4. Start the ypxfrd service. 5. Start the yppasswdd service 6. Run ypinit -m 7. Start the ypbind service A. 1, 2, 3, 6 B. 1, 2, 3, 6, 7 C. 1, 2, 3, 4, 6, 7 D. 1, 2, 3, 4, 5, 6, 7 E. 1, 2, 3, 4, 5, 6 Correct Answer: B /Reference: Reference: configuration-setup/ QUESTION 19 Which three types of output may be obtained from commands from the crash utility in Oracle Linux? A. kernel data structures B. information about all open and closed files

15 C. kernel symbol names D. information about all mounted and unmounted file systems E. a list of tasks on the sleep queue F. a list of tasks on the stopped queue Correct Answer: ABC /Reference: QUESTION 20 Which statement is true about btrfs file system devices? A. You must execute the btrfs device scan after every reboot to add a device to a btrfs file system. B. The btrfs device scan -all-devices command scans physical devices looking for members of a btrfs volume. C. Blocks are automatically rebalanced across all existing devices after adding new devices. D. A device may be added to btrfs only if the file system is unmounted. Correct Answer: B /Reference: QUESTION 21 Which two statements are true about debugging OCFS2? A. The o2image command copies OCFS2 file system data from the device to the specified image file. B. The o2image command copies OCFS2 file system metadata from the device to the specified image file. C. You must mount the debugfs file system to enable the use of the debugfs.ocfs2 command. D. Trace bits has two possible statuses: allow and deny. E. You must unmount all ocfs2 file systems to enable the use of the debugfs.ocfs2 command. Correct Answer: BC

16 /Reference: : o2image copies the OCFS2 file system meta-data from the device to the specified image-file. This image file contains the file system skeleton that includes the inodes, directory names and file names. It does not include any file data. This image file can be useful to debug certain problems that are not reproducible otherwise. Like on-disk corruptions. It could also be used to analyse the file system layout in an aging file system with an eye towards improving performance. As the image-file contains a copy of all the meta-data blocks, it can be a large file. By default, it is created in a packed format, in which all meta-data blocks are written back-to-back. With the -r option, the user could choose to have the file in the raw (or sparse) format, in which the blocks are written to the same offset as they are on the device. debugfs.ocfs2 understands both formats. QUESTION 22 Consider the features and capabilities of Kernel-based Virtual Machine (kvm). Which two statements are correct? A. kvm is considered both a type-1 and type-2 hypervisor because it turns the Linux kernel into a bare-metal hypervisor but the OS running on the virtualization host is a full OS. B. kvm is an open source hypervisor, which provides full virtualization with hardware-assisted virtualization. It does not support paravirtualized devices. C. There are two kvm modules: a kvm module that provides the core virtualization infrastructure and a kvm_hw module that ensbles x86 hardware virtualization extensions (Intel VT or AMD- V). D. The kvm hypervisor in Oracle Linux is managed with libvirt API and tools built for libvirt, such as virt-manager and virsh. E. kvm provides a software package called Linux Integration Services (LIS) that provides integration between the OS running in the kvm virtual machine and the physical host. Correct Answer: AD /Reference: QUESTION 23 Which three statements are true about Btrfs copy --reflink? A. It works only on the same btrfs file system.

17 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 /Reference: Reference: QUESTION 24 Examine the dtrace command: dtrace n syscall::read:entry Which two statements are true? A. This statement fails with a syntax error because no action is defined. B. This statement runs successfully with the default action being executed. C. The probe name is read. D. The probe name is entry. E. The probe name is not specified in this command, but it is implied through adjacent colons. F. This command runs but produces no output; is no predicate to select when the probe fires. Correct Answer: BC /Reference:

18 QUESTION 25 Examine the output of the lscgroup command: cpuset, cpu, memory:/ cpuset, cpu, memory:/a2 cpuset, cpu, memory:/a2/a3 cpuset, cpu, memory:/b1 cpuset, cpu, memory:/a1 blkio:/ blkio:/b1 cpuacct:/ Which statement changes the shares parameter of the cpu subsystem for the group A3 to a value of 2? A. cgset r cpu.shares=2 A3 B. cgset r cpu.shares=2 A3/A3 C. cgset r shares=2 cpu:/a2/a3 D. cgset r cpu.shares=2 cpuset, cpu, memory:/a2/a3 Correct Answer: C /Reference: QUESTION 26 Examine the D script: syscall::write:entry = avg(arg2); } Note that the third argument to the write(2) system call is the size of the write being made. Which statement is true about this D script? A. It displays the average write size that each unique process makes. B. It displays the average write size that each running program makes. C. It does not run because the aggregate is not named. D. It runs but produces no output.

19 Correct Answer: C /Reference: QUESTION 27 Examine the UserDir directives in this extract from /etc/httpd/conf/httpd.conf: Ifmodule mod_userdir.c> UserDir enabled user1 UserDir disabled user1 UserDir public_html </ifmodule> The web server URL is A website exists in the user's directory /home/user1/public_html. A user attempts to access user1's webpages by using the URL: Which statement describes the outcome? A. The occurrence of user1 in the list of disabled users causes an access denied error to the website contained in user1's public_html subdirectory, overridding the enabled directive. B. The occurrence of user1 in the list of enabled users allows access to the website contained in user1's public_html subdirectory, overridding the disabled directive. C. The configuration produces an error upon web server startup, because the enabled and disabled directives conflict. D. Access is granted because the UserDir public_html directive applies default access to all local users on the system, overriding the enabled or disabled directive. Correct Answer: B /Reference: QUESTION 28 Which two statements are correct about features and capabilities of virtualization in Oracle Linux? A. Virtualization is restricted to running a guest operating system in a virtual machine. B. Virtualization permits the creation of virtual environments by using Linux Containers or Kernel Virtual Machine (KVM).

20 C. An I/O path from a host server to a peripheral device can be virtualized, enabling multiple guest VMs to share an I/O device. D. A type-1 hypervisor, also known as a host-based hypervisor, is designed to run within a traditional operating system. E. A type-2 hypervisor communicates directly with the computer hardware and as known as a bare-metal hypervisor. Correct Answer: CD /Reference: QUESTION 29 Consider the device-mapper-multipath package and configuration. Which statement is true? A. /etc/multipath.conf is created by the package installation process. B. /etc/multipath.conf must be created after installation by an administrator by copying from /usr/share/doc/device-mapper-multipath-<version>/. C. mpathconf can modify the operating behavior of multipathing and persistent changes to the configuration file. D. The multipath command can modify the multipath service run-level configuration and persistent changes to the configuration file. Correct Answer: D /Reference: QUESTION 30 Identify the minimum required steps to configure postfix on a client system to relay outbound s to an SMTP server. Note: The postfix package is already installed and running on the system. 1. Install the postfix-cf package. 2. Set the myorigin parameter to $mydomain in /etc/postfix/main.cf. 3. Set the relayhost parameter to the desired SMTP server in /etc/postfix/main.cf. 4. Restart mail services by using: service postfix restart. A. 1, 2, 3, 4 B. 1, 3, 4 C. 3, 4

21 D. 3 only E. 2, 3, 4 F. 2, 4 Correct Answer: E /Reference: QUESTION 31 Which three features are included in the OCFS2 file system? A. online defragmentation B. sparse file support C. metadata checksums D. multiple cluster sizes E. transparent compression F. transparent encryption Correct Answer: BCD /Reference: Reference: QUESTION 32 A system has several multipathed devices. Some of them are in use with mounted file systems. The remaining multipathed devices are unused.

22 The multipath command with the -F option is issued as shown: /]# multipath -F Which statement is true? A. All multipath mapping are flushed, thus removing their mpath mappings. The mounted file system is unusable. B. All multipath mapping except those that are in use are flushed, removing their mappings. The mounted file system is unaffected. C. Any faulted multipath devices are fixed, causing their faulty paths to be rediscovered if the underlying device is found to be available again. The mounted file system is unaffected. D. The command returns a syntax error because an mpath device name must be supplied as the argument to the -F switch. Correct Answer: A /Reference: QUESTION 33 You want to configure networking on a host and have these requirements: 1. A cache only nameserver is to be used. 2. DHCP is used to obtain an IP address. 3. DHCP must not overwrite nameserver details contained in the /etc/resolv.conf file. 4. The nameserver must be activated automatically at system startup. 5. There are two network adaptors, eth0 and eth1. The bind package has already been installed and the network service stopped. Which four actions must be performed to implement this requirement? A. Add lines with PEERDNS=no and BOOTPROTO=dhcp to the /etc/sysconfig/network- scripts/ifcfg-eth0 file. B. Add a line with PEERDNS=no to the /etc/resolv.conf file. C. Add a line with nameserver to the /etc/resolv.conf file. D. The network and bind services must be started automatically by using chkconfig for those services at the appropriate run levels. E. Add lines with PEERDNS=no and BOOTPROTO=dhcp to the /etc/sysconfig/network- scripts/ifcfg-eth1 file. F. Start the network service only automatically by using chkconfig for those services at the appropriate run levels. G. Start the bind service only automatically by using chkconfig for those services at the appropriate run levels. Correct Answer: BCDF

23 /Reference: QUESTION 34 Which statement is true about configuring a nameserver in Oracle Linux? A. If it is a primary nameserver, it must be an authoritative nameserver for all zones. B. If it is a recursive nameserver, it must be a cache-only nameserver for all zones. C. It may be authoritative for some zones and cache-only for other zones. D. If it is a secondary nameserver, it must be an authoritative nameserver for all zones. E. If it is a secondary nameserver, it must copy zone data from a primary nameserver. Correct Answer: A /Reference: QUESTION 35 Which statement is true about BTRFS RAID? A. Btrfs RAID is a multi-disk software RAID providing the same functionality as a software RAID created using the mdadm command. B. Btrfs RAID is block device RAID. C. Btrfs RAID is mirroring block devices. D. Btrfs RAID just ensures that for every block, there are "x" number of copies. Correct Answer: B /Reference: QUESTION 36 Which three server types are made possible by installing SAMBA on Oracle Linux and activating SAMBA services? A. active directory domain controller

24 B. Network Information Service (NIS) server C. domain member server D. Windows NT domain controller E. stand-alone workgroup server Correct Answer: ACD /Reference: QUESTION 37 You are required to create a file system that meets these requirements: 1. It must be created on /dev/ssd1. 2. It must be mounted on the already existing mount point/cryptfs. 3. Data stored on /cryptfs must be encrypted. Examine this list of commands: 1. cryptsetup luksformat /dev/sdd1 2. cryptsetup luksopen /dev/sdd1/sdd1 3. mkfs t ext4 /dev/sdd1 4. mkfs t ext4 /dev/mapper/sdd1 5. mount /dev/sdd1/cryptfs 6. mount /dev/mapper/sdd1/cryptfs 7. cryptsetup /cryptfs Which option represents the commands in the correct order to create a file system that meet the requirements? A. 3, 5, 7 B. 1, 2, 4, 6 C. 1, 2, 3, 5 D. 1, 4, 6 E. 1, 3, 5 Correct Answer: B /Reference:

25 QUESTION 38 What does a template script set up? A. an application to run a container B. tailored security policy for a container C. Linux distributions to run in a container D. the look of a web application for viewing containers Correct Answer: C /Reference: QUESTION 39 Consider the steps to enable the Pluggable Authentication Module (PAM) to use cgroup rules for a 64-bit system: 1. Install the libcgroup-pam software package. 2. Ensure that the PAM module has been installed and exists: /lib64/security/pam_cgroup.so. 3. Edit the /ets/pam.d/su configuration file and add a line: session optional pam_cgroup.so. 4. Edit the /ets/pam.d/su configuration file and add a line: auth sufficient pam_cgroup.so. 5. Configure /etc/cgconfig.conf. 6. Configure /etc/cgrules.conf. 7. Log out all users that are affected by the cgroup settings in the /etc/cgrules.conf file. 8. Enable and start the cgred service. 9. Reboot the system. Which option represents the steps in the correct order to enable PAM to use cgroup rules for a logged-in user? A. 2, 3, 5, 6, 7, 8 B. 1, 2, 3, 5, 6, 7 C. 1, 2, 3, 5, 6, 7, 8 D. 1, 2, 3, 4, 5, 6, 7 E. 1, 2, 3, 4, 5, 6, 9 Correct Answer: C /Reference:

26 QUESTION 40 Which two commands can be used to find the cgroup to which a given process with PID belongs? A. cgget a grep PID B. ps o cgroup grep PID C. cat /proc/pid/cgroup D. lscgroup grep PID Correct Answer: BC /Reference: Reference: single/resource_management_guide/ QUESTION 41 You create an XFS file system by using the command: # mkfs t xfs L /xfs1 l logdev=/dev/cdd1 /dev/sdh1 You create the mount point /xfs1 and want to mount the file system on its mount point, before adding an entry for the file system to /etc/fstab. Which two commands can you use to do this? A. mount /dev/sdh1 /xfs1 B. mount LABEL=/xfs1 /xfs1 C. mount t xfs o logdev=dev/sdd1 /dev/sdh1 /xfs1 D. mount LABEL=/xfs1 o logdev=/dev/sdd1 /xfs1 E. mount LABEL=/xfs1 o logdev=/dev/sdd1 F. mount t xfs LABEL=/xfs1 /xfs1

27 Correct Answer: CD /Reference: QUESTION 42 Examine the output of the command: lssubsys am devices freezer net_cls perf_event hugetlb Now the lssubsys command is executed and new output is generated: ssubsys am ssubsys am devices perf_event hugetlb

28 Which command or sequence of commands is correct? A. mkdir p /cgroup/c; mount t cgroup o freezer C /cgroup/c; mount t cgroup o remount, freezer, net_cls C /cgroup/c B. mkdir p /cgroup/c; mount o freezer, net_cls cgroup /cgroup/c C. mkdir p /cgroup/c; mount t cgroup o freezer freezer /cgroup/c; mount t cgroup o net_cls net_cls /cgroup/c D. mkdir p /cgroup/c; mount t cgroup o freezer, net_cls /cgroup/c Correct Answer: C /Reference: QUESTION 43 Which two statements are true about the sendmail and postfix programs? A. sendmail is an MTA. B. postfix is the default mail server on Oracle Linux C. postfix has built-in IMAP support D. sendmail has built-in IMAP support E. postfix uses sendmail to send s to remote destinations. F. postfix uses sendmail to deliver s to the local system. Correct Answer: BD /Reference: QUESTION 44 Consider the features and capabilities of DTrace in Oracle Linux. Which two statements are true? A. DTrace is available on Oracle Linux only on the z86_64 platform. B. DTrace is available on all Linux platforms. C. The Linux kernel changes required to support DTrace, and the DTrace kernel module, are available under the GNU GPL license.

29 D. DTrace package are part of the standard OL distribution, although they are not installed by default. E. DTrace package are available by subscription from the Unbreakable Linux Network (ULN). Correct Answer: AD /Reference: QUESTION 45 Which two occur when you run the command: /root] rndc reload A. They key file /etc/rndc.key is reloaded. B. The configuration file /etc/named.conf is 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 /Reference: QUESTION 46 Which three statements are true about the architecture and capabilities provided by SAMBA when installed on an Oracle Linux server? A. The Oracle Linux server may act as a SAMBA server. B. Printers on the Oracle Linux system may be shared with Windows clients. C. SAMBA uses UDP to communicate with Windows servers. D. Printers on a Windows system may not be shared with oracle Linux clients. E. The Oracle Linux Server may act as a SAMBA client.

30 Correct Answer: BCE /Reference: QUESTION 47 Match the web server directives to their description: A. A-4, B-1, C-5, D-3, E-2 B. A-5, B-2, C-3, D-4, E-1 C. A-3, B-1, C-5, D-4, E-2 D. A-4, B-2, C-5, D-3, E-1 Correct Answer: D

31 /Reference: QUESTION 48 You run the crash utility on an Oracle Linux system after a kernel panic and use the bt -a command as shown: crash> bt a crash> bt a PID: 286 TASK: c0b3a000 CPU: 0 COMMAND: in.rlogind #0 [c0b3be90] crash_save_current_state at c011aed0 #1 [c0b3bea4] panic at c011367c #2 [c0b3bee8] tulip_interrupt at c01bc820 #3 [c0b3bf08] handle_irq_event at c010a551 #4 [c0b3bf2c] do_8259a_irq at c010a319 #5 [c0b3bf3c] do_irq at c010a653 #6 [c0b3bfbc] ret_from_intr at c #7 [c0b3bfbc] sys_select at c012f803 #8 [c0b3bfc0] system_call at c Which two statements are true about the purpose of the bt a command? A. It shows stack traces of all tasks and threads. B. It shows stack traces of the active task on each CPU.

32 C. The output of each CPU must be requested separately. D. It may help show a relationship between panicking tasks on one CPU and tasks on other CPUs. Correct Answer: AB /Reference: QUESTION 49 Which three statements are true about the contents of the /etc/ocfs2/cluster.conf configuration file? A. The heartbeat stanza is required only if local heartbeat mode is enable. B. All stanzas must start at the first column and end with a colon. C. All parameters must start after a tab. D. A blank line must demarcate each stanza. E. A blank line must demarcate stanzas and parameters. F. All parameters must start after a tab and begin with a colon. Correct Answer: CDF /Reference: QUESTION 50 What are two ways to invoke the rescue procedure for Oracle Linux while booting from the installation media? A. Press the Esc key on the Oracle Linux Boot Menu screen. B. Press the Esc key on the grub loader menu. C. selecting "Rescue Installed System" on the Oracle Linux Boot Menu screen. D. selecting "Rescue Installed System" on the grub loader menu. E. Press the Shift+Ctrl keys on the grub loader menu. F. Press the Shift+Ctrl keys on the Oracle Linux Boot Menu screen. Correct Answer: CF

33 /Reference: