Which command can be used to save the current iptables rules into a file? Please enter only the command without path or parameters.
A. iptables-save
Which file, on a majordomo server, will contain a list of all members' email addresses for the mailing list "linux-users"? (Enter only the file name).
A. linux-users
A network client has an ethernet interface configured with an IP address in the subnet 192.168.0.0/24.
This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet.
What needs to be done on the client to enable it to use the router as its default gateway?
A. Run route add default gw 192.168.0.1 eth1.
B. Run route add gw 192.168.0.1 eth1.
C. Run ifconfig eth0 defaultroute 192.168.0.1.
D. Add "defaultroute 192.168.0.1" to /etc/resolv.conf.
E. Run route add defaultgw=192.168.0.1 if=eth0.
Which TWO /etc/hosts.allow entries will allow access to sshd from the class C network 192.168.1.0?
A. sshd : 192.168.1.
B. sshd : 192.168.1
C. sshd : 192.168.1.0 netmask 255.255.255.0
D. sshd : 192.168.1.0/255.255.255.0
E. sshd : 192.168.1.0
Which of the following can the program tripwire NOT check?
A. File size.
B. File signature.
C. Permissions.
D. File existence.
E. Boot sectors.
A correctly-formatted entry has been added to /etc/hosts.allow to allow certain clients to connect to a service, but this is having no effect. What would be the cause of this?
A. tcpd needs to be sent the HUP signal.
B. The service needs to be restarted.
C. The machine needs to be restarted.
D. There is a conflicting entry in /etc/hosts.deny .
E. The service does not support tcpwrappers
The innd configuration file has been changed and it should be used as soon as possible. What is the fastest way to accomplish that?
A. ctlinnd kill hup
B. kill - HUP process id
C. ctlinnd xexec innd
D. ctlinnd reload innd
E. /usr/sbin/innd reload
What is the command to add another IP address to an interface that already has (at least) one IP address?
A. ifconfig eth0:1 192.168.1.2
B. ifconfig eth0 192.168.1.2
C. ipconfig eth0:1 192.168.1.2
D. ipconfig eth0 192.168.1.2
You have installed some new libraries, but these are not available to programs and are not listed by lconfig -p. What file should the path to the libraries be added to, before running ldconfig?
A. ld.so.conf
The mailserver is currently called fred, while the primary MX record points to mailhost.example.org. What must be done to direct example.org email towards fred?
A. Add an A record for mailhost to fred's IP address.
B. Add a CNAME record from mailhost to fred
C. Add another MX record pointing to fred's IP address.
D. Add a PTR record from mailhost to fred.
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