Online Access Free 1z1-105 Practice Test

Which statement is true about the net_cls cgroup subsystem?

• A.It controls the throughput limits for network packets.
• B.It tags network packets with an identifier.
• C.It enforces a limit on the number of opened sockets.
• D.It dynamically sets the priority of network traffic per network interface.

Which two statements are true about the sendmail and postfix programs?

• A.postfixusessendmailto deliver emails to the local system.
• B.postfixis the default mail server on Oracle Linux
• C.postfixusessendmailto send emails to remote destinations.
• D.sendmailhas built-in IMAP support
• E.sendmailis an MT
• F.postfixhas built-in IMAP support

Examine the contents of the dhcp configuration file:
# cat /etc/dhcp/dhcpd.conf
subnet 192.168.100.0 netmask 255.255.255.0 {
range 192.168.100.100 192.168.100.200;
}
host host100 {
hardware ethernet 00:0c:29:B9:07:41;
fixed-address 192.168.100.100;
}
Which statement is true about this DHCPD configuration?

• A.A lease request fromhost100fails only if a previous lease on address192.168.100.100has expired.
• B.A lease request fromhost100fails only if address192.168.100.100is currently in use.
• C.A lease request fromhost100succeeds if the host assigned to address192.168.100.100is currently offline.
• D.An attempt to startDHCPDfails due to the conflicting lease declaration for address192.168.100.100.
• E.A lease request fromhost100always fails.

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 withPEERDNS=noandBOOTPROTO=dhcpto the /etc/sysconfig/network-scripts/ifcfgeth1file.
• B.Start thebindservice only automatically by usingchkconfigfor those services at the appropriate run levels.
• C.Add lines withPEERDNS=noandBOOTPROTO=dhcpto the /etc/sysconfig/network-scripts/ifcfgeth0file.
• D.Add a line withnameserver 127.0.0.1to the/etc/resolv.conffile.
• E.Start thenetworkservice only automatically by usingchkconfigfor those services at the appropriate run levels.
• F.Add a line withPEERDNS=noto the/etc/resolv.conffile.
• G.Thenetworkandbindservices must be started automatically by usingchkconfigfor those services at the appropriate run levels.

Which two parameters are valid networking modes for a Linux container (LXC)?

• A.nat
• B.macvlan
• C.veth
• D.bridged
• E.routed