Addis course Tasks & Skills questions

Fri, 05 Jun 2009 22:57:39 -0000
eng, etiopia, pdo

What does the command find /etc | less do?

What does the command ps aux do?

What does the command mii-tool do and when would you use it?

What does the command host www.google.com do?

How do you get the MAC address of your computer?

What can you use dnsmasq for?

What is in /etc/dnsmasq.conf?

What is the use of the dhcp-option configuration parameter of /etc/dnsmasq.conf?

What is the difference between chown, chgrp and chmod?

What would you use nmap for?

How do you check to see if a network service is running on your computer?

What does apache2ctl configtest do? When should you run it?

Consider this piece of configuration of apache:

AuthUserFile /etc/apache2/students
AuthType Basic
AuthName "Students"
Require valid-user

What does it do?

What command would you use to add a new username and password to /etc/apache2/students? (you can write the entire commandline if you know it, but just the name of the command is fine)

You created the configuration for a new apache site in /etc/apache2/sites-available. How do you activate the new site?

When do you need to add the line Listen 443 to /etc/apache2/ports.conf?

What do you normally find in /var/log/syslog, and when would you read it?

What does the command smbclient //localhost/web do?

What does the command sudo smbpasswd -a enrico do?

Where do you look for the explanation of the many directives found in /etc/samba/smb.conf?

What is the purpose of the package cupsys?

What is the purpose of the command iptables?

What is the difference between MDA, MTA and MUA?

In a normal mail server configuration, when should you accept a mail coming from outside your local network?

Suppose you are a mail software and you need to send a mail to addis@yahoo.com: how do you find out the internet host to which you should connect to send the mail?

What is the difference between man 5 postconf and man 8 postconf?

What is the different use of SMTP and IMAP?

What is a "smarthost" in the context of mail server configuration?

What does the command mailq do?

What does the command sudo postsuper -d ALL deferred do?

Postfix has four mail queues: "incoming", "active", "deferred" and "hold". What is the difference among them?

What does the package dovecot do?

In the file /etc/dovecot/dovecot.conf, what is the difference between having protocols = imap and protocols = imaps?

What happens if I put the line enrico@enricozini.org in the file /home/enrico/.forward?

Consider this list of possible strategies for handling mail classified as spam:

silently delete it

refuse the mail and send a notification to the sender

refuse the mail and send a notification to the receiver

quarantine the e-mail

refuse delivery with a SMTP error

deliver with an extra header that says that it's spam

What are their advantages and disadvantages?