CNIT 340 ACTUAL 2026 EXAM QUESTIONS AND
SOLUTIONS RATED A+
✔✔What is the role of 'smbd' in SAMBA? - ✔✔Handles SMB (Server Message Block)
protocol
✔✔Where is the SAMBA configuration usually stored? - ✔✔/etc or /etc/samba
✔✔What is the function of a transport agent? - ✔✔Runs as a daemon to receive and
send mail via SMTP
✔✔What is the incoming mail queue? - ✔✔Where incoming messages are placed
pending parsing and delivery
✔✔What is the outgoing mail queue? - ✔✔Where local applications place messages
that need to be sent
✔✔What is a mail alias? - ✔✔Incoming mail can be automatically sent to another
address (local or remote).
✔✔What must be read for all machines? - ✔✔Mail addressed to root.
✔✔What is mail relaying? - ✔✔Accepting non-local mail and forwarding it.
✔✔What is SendMail? - ✔✔A common MTA with monolithic architecture.
✔✔What is Postfix? - ✔✔A rapidly gaining MTA with modular architecture.
✔✔Where is the incoming mail queue for Postfix? - ✔✔/var/spool/postfix.
✔✔What is the first step in securing the UNIX system? - ✔✔Backing up the system.
✔✔What are dormant accounts? - ✔✔Accounts that haven't been used recently.
✔✔What is a restricted shell? - ✔✔Locks the user into an environment to prevent
certain user activity.
✔✔What is auditing and logging in UNIX? - ✔✔UNIX can keep a log of every command
run.
✔✔What is file integrity checking? - ✔✔Ensuring files were not changed by building a
database of file checksums.
, ✔✔What is chroot? - ✔✔Limits system exposure from an application by confining it to a
virtual root.
✔✔What is security enhanced Linux (SEL)? - ✔✔Adds mandatory access controls to
restrict access based on policy.
✔✔What are the SEL modes of operation? - ✔✔Disabled, permissive, enforcing.
✔✔What is a packet filter? - ✔✔Enables filtering of ingress/egress traffic based on
packet characteristics.
✔✔What is TCPwrapper? - ✔✔Rejects packets from unknown addresses and logs
attempted attacks.
✔✔What is a firewall? - ✔✔A router that contains a packet filter.
✔✔What are filtering rules and rulesets? - ✔✔Combined into rulesets that control
access to the internal network.
✔✔What are the available packet filter actions? - ✔✔Allow/permit, deny/drop, reject.
✔✔What is an X-Windows server? - ✔✔Software that presents the output of an
application to the display.
✔✔What is an X-Windows client? - ✔✔The application itself.
✔✔What is an X-Windows host? - ✔✔The computer that is running the application.
✔✔What is an X-Windows display? - ✔✔Equivalent to a keyboard and monitor
combination.
✔✔What is an X-Windows screen? - ✔✔A virtual desktop.
✔✔What are window managers? - ✔✔Control the appearance of X display.
✔✔How is X-Windows invoked? - ✔✔Using startx or xstart.
✔✔What does the xhost command do? - ✔✔Allows a host to use the local machine as a
display server.
✔✔What is the process of tunneling X via SSH? - ✔✔Increased security by tricking the
display server into believing the remote X client is local.
✔✔What are the two separate VI modes? - ✔✔Command mode and insert mode.
SOLUTIONS RATED A+
✔✔What is the role of 'smbd' in SAMBA? - ✔✔Handles SMB (Server Message Block)
protocol
✔✔Where is the SAMBA configuration usually stored? - ✔✔/etc or /etc/samba
✔✔What is the function of a transport agent? - ✔✔Runs as a daemon to receive and
send mail via SMTP
✔✔What is the incoming mail queue? - ✔✔Where incoming messages are placed
pending parsing and delivery
✔✔What is the outgoing mail queue? - ✔✔Where local applications place messages
that need to be sent
✔✔What is a mail alias? - ✔✔Incoming mail can be automatically sent to another
address (local or remote).
✔✔What must be read for all machines? - ✔✔Mail addressed to root.
✔✔What is mail relaying? - ✔✔Accepting non-local mail and forwarding it.
✔✔What is SendMail? - ✔✔A common MTA with monolithic architecture.
✔✔What is Postfix? - ✔✔A rapidly gaining MTA with modular architecture.
✔✔Where is the incoming mail queue for Postfix? - ✔✔/var/spool/postfix.
✔✔What is the first step in securing the UNIX system? - ✔✔Backing up the system.
✔✔What are dormant accounts? - ✔✔Accounts that haven't been used recently.
✔✔What is a restricted shell? - ✔✔Locks the user into an environment to prevent
certain user activity.
✔✔What is auditing and logging in UNIX? - ✔✔UNIX can keep a log of every command
run.
✔✔What is file integrity checking? - ✔✔Ensuring files were not changed by building a
database of file checksums.
, ✔✔What is chroot? - ✔✔Limits system exposure from an application by confining it to a
virtual root.
✔✔What is security enhanced Linux (SEL)? - ✔✔Adds mandatory access controls to
restrict access based on policy.
✔✔What are the SEL modes of operation? - ✔✔Disabled, permissive, enforcing.
✔✔What is a packet filter? - ✔✔Enables filtering of ingress/egress traffic based on
packet characteristics.
✔✔What is TCPwrapper? - ✔✔Rejects packets from unknown addresses and logs
attempted attacks.
✔✔What is a firewall? - ✔✔A router that contains a packet filter.
✔✔What are filtering rules and rulesets? - ✔✔Combined into rulesets that control
access to the internal network.
✔✔What are the available packet filter actions? - ✔✔Allow/permit, deny/drop, reject.
✔✔What is an X-Windows server? - ✔✔Software that presents the output of an
application to the display.
✔✔What is an X-Windows client? - ✔✔The application itself.
✔✔What is an X-Windows host? - ✔✔The computer that is running the application.
✔✔What is an X-Windows display? - ✔✔Equivalent to a keyboard and monitor
combination.
✔✔What is an X-Windows screen? - ✔✔A virtual desktop.
✔✔What are window managers? - ✔✔Control the appearance of X display.
✔✔How is X-Windows invoked? - ✔✔Using startx or xstart.
✔✔What does the xhost command do? - ✔✔Allows a host to use the local machine as a
display server.
✔✔What is the process of tunneling X via SSH? - ✔✔Increased security by tricking the
display server into believing the remote X client is local.
✔✔What are the two separate VI modes? - ✔✔Command mode and insert mode.
