Week 2 Flashcards

1
Q

Popular IaaS companies

A

Amazon EC2, Linode, Windows Azure, Google Compute Engine

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2
Q

What are example SaaS services?

A

Microsoft Office 365 and Google G Suite

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3
Q

What are popular PaaS companies?

A

Heroku, Windows Azure, and Google App Engine

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4
Q

What makes server OS special?

A

They allow for more network connections and more RAM capacity

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5
Q

What functions are common to server OSes?

A

File and printer sharing, application services (such as databases), web site services, e-mail/groupware/messaging, terminal services, caching

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6
Q

What kind of files may be transferred using TFTP?

A

Installation files.

General files since no authentication or encryption is done.

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7
Q

NTP

A

Network Time Protocol

Used to keep the clock synchronized on machines connected to a network

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8
Q

Why would you set up an NTP server at a business?

A

To ensure all clients connected to the server are using the same internal clock.

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9
Q

Intranet

A

An internal network inside a company ; accessible if you’re on a company’s network

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10
Q

Proxy server

A

Acts as an intermediary between a company’s network and the internet

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11
Q

Domain Name System (DNS)

A

Maps human-understandable names to IP addresses

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12
Q

What is the command to check the status of a daemon (background) service in Linux?

A

service service_name status

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13
Q

What is the PowerShell command in Windows to check service status?

A

Get-Service service_name

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14
Q

Where are the configuration files located for the installed services?

A

/etc

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15
Q

lftp

A

An ftp client program that allows us to connect to an ftp server

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16
Q

How do you save something in the Linux command line?

A

wq

17
Q

Reload

A

The service re-reads the configuration without having to stop and start

18
Q

dnsmasq

A

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

19
Q

dig command in Linux

A

It lets you query DNS servers and see their answers

20
Q

-d flag in Linux

A

No daemon; means to run in foreground instead of background

21
Q

-q in Linux

A

Log queries; show interactions with the clients

22
Q

Interface

A

Name of the interface that will be used for listening to dhcp requests and serving replies

23
Q

Bind-interfaces

A

Means dnsmasq will operate on that interface only and ignore others

24
Q

Dhcp-option

A

Allows us to give the dhcp clients optional additional information