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When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?A . All traffic to localhost must always be allowedB . It doesn’t matter; netfilter never affects packets addressed to localhostC . Some applications use the localhost interface to...

Which BIND option should be used to limit the IP addresses from which slave name servers may connect?A . allow-zone-transferB . allow-transferC . allow-secondaryD . allow-slavesE . allow-queriesView AnswerAnswer: B

When trying to reverse proxy a web server through Nginx, what keyword is missing from the following configuration sample? A . remote_proxyB . reverse_proxyC . proxy_reverseD . proxy_passE . forward_toView AnswerAnswer: D

Which of these tools, without any options, provides the most information when performing DNS queries?A . digB . nslookupC . hostD . named-checkconfE . named-checkzoneView AnswerAnswer: A

Which Linux user is used by vsftpd to perform file system operations for anonymous FTP users?A . The Linux user which runs the vsftpd processB . The Linux user that owns the root FTP directory served by vsftpdC . The Linux user with the same user name that was used...

Which Apache HTTPD directive enables HTTPS protocol support?A . HTTPSEngine onB . SSLEngine onC . SSLEnable onD . HTTPSEnable onE . StartTLS onView AnswerAnswer: B

Which of the following Samba configuration parameters is functionally identical to the parameter read only=yes?A . browseable=noB . read write=noC . writeable=noD . write only=noE . write access=noView AnswerAnswer: C

Which of the following sshd configuration should be set to no in order to fully disable password based logins? (Choose two.)A . PAMAuthenticationB . ChallengegeResponseAuthenticationC . PermitPlaintextLoginD . UsePasswordsE . PasswordAuthenticationView AnswerAnswer: B,E

Which of the statements below are correct regarding the following commands, which are executed on a Linux router? (Choose two.) A . Packets with source or destination addresses from fe80::/64 will never occur in the FORWARD chainB . The rules disable packet forwarding because network nodes always use addresses from...

Which of the following options are valid in /etc/exports? (Choose two.)A . rwB . roC . rootsquashD . norootsquashE . uidView AnswerAnswer: A,B