Week 2 - Configuring Network Services

Question 1

What is dnsmasq?

Linux only?

Answer 1

program that provides DNS, DHCP, TFTP, and PXE services in as simple package

Question 2

What is dnsmasq? [Linux]

Answer 2

a program that provides DNS, DHCP, TFTP, and PXE services in a simple package

Question 3

What does the command “dig” on Linux allow us to do?

Answer 3

lets us query DNS servers to see their answers

Question 4

Although not typically how you run a service, what flags would you use to have a service like dnsmasq run in debug mode? [command in Linux]

Answer 4

sudo dnsmasq -d -q

Question 5

What’s the most basic functionality of dnsmasq?

Answer 5

it is a cache for DNS requests (IP of a host name) meaning it remembers so it doesn’t have to query the DNS server for the same request in the future

Question 6

What’s the benefit of using dnsmasq when it comes to lists of host names and IPs?

Answer 6

We can give dnsmasq a list of our own host names and IPs and the service will give authoritative answers for them

(use the -H parameter to tell dnsmasq we want to include our list in the information being served)

Question 7

What is DHC client?

Answer 7

A very common DHCP client on Linux