System Administration and IT Infrastructure Services. Week 3: Software and Platform Services

What is the main function of a database system?

databases allow us to store, query, filter and manage large amounts of data; Customer information, like news articles, videos, large amounts of text, images, or audio files, generally get stored in a database. This is the most secure and efficient way to manage large amounts of data.

Apache is an example of what type of software?

Web (HTTP) server software; A web server stores and serves content to clients through the Internet. The most widely used web server software is the Apache HTTP Server, most commonly referred to as Apache.

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

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

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

The client-side; 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:

The server-side; 5xx HTTP status codes indicate an issue with the server serving the web content.

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

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

What are the differences between TLS and SSL? Check all that apply.

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

Which of these is NOT an email protocol?

IRC; IRC, which stands for Internet Chat Relay, is an instant messaging chat system, not an email protocol.

What methods could you use to set up printing in an organization? Check all that apply.

directly connecting a printer; From small to large organizations, you have lots of ways to set up a printer. setting up a print server using a cloud service to set up printers

What are some communication services you can utilize in your organization? Check all that apply.

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

True or false: Commercial-use and personal-use software licenses are essentially the same thing.

false; Most software distributors have separate agreements for businesses. Before purchasing or installing any software, you should check the license agreement for the software.

What are the benefits of setting up an NFS server? Check all that apply

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

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

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

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

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

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? Check all that apply. IRC Open IM Chat applications, like Pidgin or Adium Emails HTTP

Open IM Chat applications, like Pidgin or Adium; Free chat alternatives, like IRC and open IM chat applications, are widely used in businesses today. HTTP; Not quite. Please refer back to Lesson 1 on Configuring Communication Services for a refresher. You didn't select all the correct answers

What's the difference between POP3 and IMAP? Check all that apply.

POP3 can only download email to one local device; 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. IMAP can download email onto multiple devices

You're the sole IT employee at your company. Most of the computers in your fleet are Windows machines. Your boss wants you to set up a network file storage. What file service should you use?

Samba server; While NFS servers can be used for shared network storage, they have interoperability issues with Windows. So, a better Windows alternative, like Samba, is your best bet.