Software, File and Platform Services

Company B is setting up commercial printing services on their network. Which of these are advantages of centrally managed commercial printers?

-In a commercial environment, you'll probably be running commercial printers that also can report diagnostics information, like low toner levels. -You need to be able to deploy printer driver software so that your users can print from their computers. -When you can manage printers from a central location, it doesn't matter how far apart they are.

Which of these is a valid method of managing printer services in a commercial environment?

-In the Windows Server operating system, there's a Print and Document Services that can be enabled. All you have to do is add your network printers to this service and install the drivers for those printers. -CUPS allows you to easily manage printers from a simple web url. -Another way you can manage printers is by using a cloud service provider. This allows you to manage your printers through a web browser.

HTTP status codes that begin with 4xx, like 404, indicate errors on:

4xx HTTP status codes indicate an issue with the client, like entering a bad URL or accessing something they aren't authorized to.

HTTP status codes that begin with 5xx, like 501, indicate errors on:

5xx HTTP status codes indicate an issue with the server serving the web content.

What are the benefits of setting up an NFS server?

A network file storage, or NFS, server is used to store files on a network, and allow them to be shared with others.

SMB (Server Message Block)

A protocol that works on the Application layer and is used to share files, serial ports, printers, and communications devices, including mail slots and named pipes, between computers.

Regions

A region is a geographical location containing a number of data centers ( Zones )

NAS (Network Attached Storage)

A specialized storage device or group of storage devices that provides centralized fault-tolerant data storage for a network. NAS depends on traditional network transmission methods such as Ethernet.

Apache HTTP Server

An open source HTTP server program that runs on a wide variety of operating systems.

An employee sets up Apache HTTP Server. He types 127.0.0.1 in the browser to check that the content is there. What is the next step in the setup process?

Before the web content can be accessed over the Internet, DNS needs to be set up so the address can be accessed with a URL.

What are some communication services you can utilize in your organization?

Communication services, like chat applications, emails, and phone calls, allow you to communicate with others in an organization.

Where does customer information, such as news articles, videos, large amounts of text, images, or audio files, generally get stored for web services?

Customer information, like news articles, videos, large amounts of text, images, or audio files, generally gets stored in a database.

You can use a(n) ______________to store large amounts of customer data for a website.

Databases, like MySQL and PostgresSQL, are widely used to store data.

Let's say that you're the sole IT employee at your company. Your boss wants the company to migrate away from using the current, paid-for chat application and use something free, insead. What options could you use?

Free chat alternatives, like IRC and open IM chat applications, are widely used in businesses today. -IRC -Pidgin or Adium

When you have a web server, what service is used to enable HTTP requests to be processed?

HTTP servers, like Apache web server, are used to process HTTP requests.

HTTP status code

HTTP status codes are codes or numbers that indicate some sort of error or info messages that occurred when trying to access a web resource. Knowing common HTTP status code comes in handy when you're troubleshooting website error.

Autoscaling

It allows the service to increase or reduce capacity as needed, while the service owner only pays for the cost of the machines that are in use at any given time

SSL (Secure Socket Layer protocol)

It's a way of securing communication between a web server and client. But it's pretty old and insecure, so it's been deprecated in favor of TLS.

True or false: You can purchase a domain name localhost.

Localhost is a reserved name, meant to point to your local machine.

Examples of database software

MS Access, OpenOffice's Base, Oracle, MySQL, PostgreSQL

Which email protocol is capable of sending emails?

MX DNS

What type of DNS record is used for email servers?

MX, or mail exchange, records are used for email.

Database systems

MySQL and PostgreSQL are widely used in application and web development and data analytics.

What's the difference between POP3 and IMAP?

POP3 allows you to only download email to one device, which you may want to use if you want added privacy with your emails. IMAP allows you to download email onto multiple devices, which is the email protocol that's widely used today.

Email Protocols

SMTP POP3 (Post Office Protocol) - IMAP IMAP(Internet Message Access Protocol)

You want to be super private with your email. You'd like to be able to download your email to a single device, then remove it from your email server. What email protocol can you use to do that?

SMTP???

Company A is setting up a network of mostly Windows machines. Which networking file system protocol would you recommend for maximum interoperability?

The only reason you might want to consider SMB using Samba over NFS is because it works better with Windows operating systems.

What are the differences between TLS and SSL?

While TLS and SSL are used interchangeably, they do have differences. For example, the latest versions of TLS are more secure than SSL.

SSD (solid state drive)

a flash memory storage device that contains its own processor to manage its storage

File storage services

allow us to centrally store files and manage access between files and groups. You can set up a file storage server that will let users access a shared directory to modify or add files and much, much more.

Databases

allow us to store query, filter, and manage large amounts of data.

Software services

are the services that employees use that allow them to do their daily job functions. This can include applications like word processors, Internet browsers, email clients, chat clients and so on.

Software services .1

communication services security services,

POP3 (Post Office Protocol version 3)

downloads messages from mail service to a user's local computer. This allows the user to not only receive emails on their own machine, but also to disconnect from the Internet and retain access to all of their messages. Port 110: For unencrypted POP3 access; this is the default listening/communications port. Port 995: Used for encrypted POP3 connections.

Common HTTP Status Codes

dreaded 404 Not Found A 404 error indicates that the URL you entered doesn't point to anything

TLS (Transport Layer Security)

most popular way to keep communications secure over a network. TLS is widely used to keep web browsing secure, but it can be used in a lot of other applications, too.

NFS (Network File System)

protocol that enables files to be shared over a network

IMAP IMAP(Internet Message Access Protocol)

protocol used by the vast majority of consumer email accounts. With IMAP, emails are stored on an Internet server. When a user accesses their account, they're connected to the external server, and data is transferred from the server to their local machine - which itself doesn't actually receive any email messages. Port 143: The default IMAP port; this allows the protocol to listen for incoming requests to synchronize emails. Traffic through this port is unencrypted. Port 993: Used for IMAP over SSL.

HTTPS(Hypertext Transfer Protocol Secure)

secure version of HTTP. It makes sure the communication your web browser has with the website is secured through encryption. HTTPS is also referred to as HTTP over TLS or HTTP over SSL.

Software as a Service or SaaS

the software is already pre-configured and the user isn't deeply involved in the cloud configuration.

Infrastructure as a Service or IaaS

you're hosting your own services in the cloud