Week 2 Flashcards
Popular IaaS companies
Amazon EC2, Linode, Windows Azure, Google Compute Engine
What are example SaaS services?
Microsoft Office 365 and Google G Suite
What are popular PaaS companies?
Heroku, Windows Azure, and Google App Engine
What makes server OS special?
They allow for more network connections and more RAM capacity
What functions are common to server OSes?
File and printer sharing, application services (such as databases), web site services, e-mail/groupware/messaging, terminal services, caching
What kind of files may be transferred using TFTP?
Installation files.
General files since no authentication or encryption is done.
NTP
Network Time Protocol
Used to keep the clock synchronized on machines connected to a network
Why would you set up an NTP server at a business?
To ensure all clients connected to the server are using the same internal clock.
Intranet
An internal network inside a company ; accessible if you’re on a company’s network
Proxy server
Acts as an intermediary between a company’s network and the internet
Domain Name System (DNS)
Maps human-understandable names to IP addresses
What is the command to check the status of a daemon (background) service in Linux?
service service_name status
What is the PowerShell command in Windows to check service status?
Get-Service service_name
Where are the configuration files located for the installed services?
/etc
lftp
An ftp client program that allows us to connect to an ftp server
How do you save something in the Linux command line?
wq
Reload
The service re-reads the configuration without having to stop and start
dnsmasq
A program that provides DNS, DHCP, TFTP, and PXE services in a simple package
dig command in Linux
It lets you query DNS servers and see their answers
-d flag in Linux
No daemon; means to run in foreground instead of background
-q in Linux
Log queries; show interactions with the clients
Interface
Name of the interface that will be used for listening to dhcp requests and serving replies
Bind-interfaces
Means dnsmasq will operate on that interface only and ignore others
Dhcp-option
Allows us to give the dhcp clients optional additional information
