1Z0-100Oracle Linux 5 and 6 System Administration
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You are about to switch a Red Hat Enterprise Linux 6 (RHEL6) system from the Red Hat Network to the Unbreakable Linux Network (ULN).
Consider this output:
# rpm –qa *rhn*
rhnlib-2.5.22-12.e16.noarch yum-rhn-plugin-0.9.1-36.e16.noarch rhn-setup-1.0.0-73.e16.noarch rhn-client-tools-1.0.0-73.e16.noarch rhn-check-1.0.0-73.e16.noarch rhnsd-4.9.3-2.e16.x86_64
Identify four minimum steps that you should perform to successfully switch this system from RHN to ULN.
A. Create a ULN account if it doesn't exist already.
B. Ensure you have a valid Oracle Linux support agreement.
C. Install the uln_register.tgz package.
D. Install the uln_register.tgz and uln_register-gnome.tgz packages.
E. Run the uln_register command as the root user and answer the prompts.
F. Install the Unbreakable Enterprise kernel (UEK).
G. Run the yum update command.
H. Reboot your system.
A web server on HOST01 is listening on port 80.
Examine the IPTABLES rule shown: [root@host01 ~] # iptables –L INPUT
Chain INPUT (policy ACCEPT)
target port opt source destination ACCEPT tcp - -anywhere anywhere tcp dpt:http
Another rule is then added:
[root@host01 ~] # iptables –A INPUT –P tcp - - dport 80 –j REJECT
What is the effect of this command on subsequent attempts to access the web server on HOST01 using port 80?
A. New connection attempts timeout.
B. New connection attempts are refused and the client informed of the refusal.
C. New connection attempts always succeed.
D. New connection attempts succeed until a reload of the firewall rules.
You installed the sendmail-cf package using the yum command as shown: # yum –Y install sendmail-cf Loaded plugins: security Setting up Install Process Resolving Dependencies - -> Running Transaction Check - - - > Package sendmail-cf.noarch 0:8.14.4-8.e16 will be installed - - > Processing Dependency: sendmail = 7.14.4-8.e16 for package: sendmail-cf-8.14.4-8.e16.noarch - - > Running transaction check - - > Package sendmail.x86_64 0:8.14.4-8.e16 will be installed - - > Finished Dependency Resolution Dependency Resolved
What is the outcome of the YUM command?
# yun y remove sendmail
A. It fails with an error because the sendmail-cf package depends on the package being removed.
B. It succeeds and removes both the sendmail and sendmail-cf packages.
C. It succeeds and only removes the sendmail package.
D. It removes the sendmail packages and raises a warning about the sendmail-cf package, which
depends on the package being removed.
E. It removes the sendmail package and prompts you for the option to remove the sendmail-cf package.
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