PRACTICE QUIZ: INTRO TO IT INFRASTRUCTURE SERVICES
1. Which of the following is considered a physical infrastructure service? Check all that apply.
- Laptop (CORRECT)
- Desktop (CORRECT)
- Rack server (CORRECT)
- Operating systems
You got it! The physical infrastructure services imply to the hardware and machinery an establishment uses in the IT environment. It includes servers, storage devices, network equipment, and other hardware components for performing the operations of the organization in IT.
2. Which of these is considered a network service? Check all that apply.
- Wireless Internet (CORRECT)
- DNS (CORRECT)
- Blade server
- Ethernet cables (CORRECT)
Excellent! Network services comprise networking elements that an organization employs in its IT environment. Components such as network protocols, network hardware, routers, switches, firewalls, and all other infrastructural entities entailing communication and data transfer across the network are covered by such services. This ensures the efficacy and safety of the organization’s IT operations as well as connects them.
3. Which of these is considered a software service? Check all that apply.
- Chat applications (CORRECT)
- Word processors (CORRECT)
- Email applications (CORRECT)
- Wireless Internet
Great job! Software services are the collection of software applications and platforms that any organization accesses in its IT environment. Such software applications include productivity software, business applications, operating systems, security software, databases, or software solutions intended to enable various functions and operations within the organization.
PRACTICE QUIZ: PHYSICAL INFRASTRUCTURE SERVICES
1. If you’re running a server, which one of the follow operating systems would be best suited for your server?
- Windows 10
- Ubuntu Server (CORRECT)
- MacOS
- Ubuntu
That’s exactly right! It is advisable to opt for a server OS that is tuned specifically for performance on a server while it operates.
2. What are the benefits of virtualizing servers? Check all that apply.
- Better hardware resource utilization (CORRECT)
- Easier maintenance (CORRECT)
- Lower costs (CORRECT)
- Better performance than a dedicated server
Awesome! There are very few disadvantages for server virtualization, such as maximizing the use of hardware, easier maintenance, and relatively lower costs.
3. Which of the following do you need in order to SSH to a machine? Check all that apply.
- An SSH client on the machine you want to connect from (CORRECT)
- A VPN connection
- An SSH server on the machine you want to connect to (CORRECT)
- A virtual server to connect to
Wohoo! For establishing SSH connection between two machines, SSH client should be installed on source machine and SSH server should be installed upon destination machine.
PRACTICE QUIZ: NETWORK SERVICES
1. What is one benefit of using TFTP over SFTP?
- Added security
- Simpler transfer without authentication (CORRECT)
- The encrypted transfer of data
- The user authentication requirement
Yep! TFTP allows for a simpler transfer of files without having to authenticate. If you wanted to host something that anyone could access, you could use TFTP over SFTP.
2. What service can you use to keep time synchronized across the machines on your fleet?
- FTP
- Kerberos
- NTP (CORRECT)
- SFTP
Excellent! Network Time Protocol synchronizes the clocks of all machines so that the time at all machines is accurate.
3. What features does a proxy offer? Check all that apply.
- Network privacy (CORRECT)
- Network traffic monitoring (CORRECT)
- Internet traffic filtering (CORRECT)
- The ability for employees to share information more easily
Wohoo! The proxy is an intermediary through which a company communicates with the Internet for the purposes of ensuring network privacy and monitoring and filtering traffic on the network.
4. If you want to point a domain name to a web server or use hostnames within your company, what network protocol can you use?
- DHCP
- DNS (CORRECT)
- NTP
- SFTP
Great job! DNS capability allows you to point a domain name towards a web server or map hostnames within your company network.
5. If you don’t want to use static IP addresses, but want to dynamically assign IP addresses to computers instead, what network protocol can you use?
- TFTP
- Kerberos
- NTP
- DHCP (CORRECT)
Nice work! Dynamic Host Configuration Protocol (DHCP) can be used to dynamically allocate IP addresses to the computers on a network.
QUIZ: NETWORK SERVICES
1. Let’s say that you handle the IT systems administration for your company. There’s a server inside of your organization that checks how often client machines access it. If a client machine hasn’t accessed the server in three months, the server won’t allow the client machine to access its resources anymore. What can you set to make sure that your client machines and the server times are in sync?
- FTP
- NTP (CORRECT)
- Proxy
- Intranet
You nailed it! NTP, or Network Time Protocol, is the common utility in companies and enterprises to keep all computer systems within a fleet time-synchronized.
2. If you wanted to securely transfer files from your local machine to a web server, what file transfer protocol could you use?
- FTP
- TFTP
- SFTP (CORRECT)
- NTP
Yep! SFTP is the file transfer protocol that encrypts data.
3. Google’s GSuite is an example of which Cloud service?
- Directory as a Service
- Infrastructure as a Service (IaaS)
- Software as a Service (SaaS) (CORRECT)
- Platform as a Service (PaaS)
You got it! SaaS is a Cloud offering designed to allow any user to create and edit word documents, spreadsheets, presentations, process data, etc., from the browser. This leads to reduced installation and management efforts, thus enhancing the experience of the user.
4. What are the advantages of using Infrastructure as a Service (or IaaS) solutions? Check all that apply.
- You can keep all your files on local machines.
- Operating system updates are taken care of for you. (CORRECT)
- You’re not responsible for managing hardware tasks. (CORRECT)
- You can have the hardware you need without upgrading any actual hardware. (CORRECT)
You nailed it! System software updates will be automatically managed for you through Infrastructure as a Service leaving you less time for manual intervention.
You nailed it! Simply upgrade your plan in order to gain additional computing resources that have your business covered to scale intensively.
You nailed it! Infrastructure as a service (IaaS), such as Microsoft Azure or the Google Compute Engine, allows for Virtual Machines (VMs) to be run on remote hardware. That means there is less need for hands-on hardware management and therefore more productivity and efficiency.
5. A network technician sets up an internal DNS server for his local network. When he types in a URL, which is checked first?
- External ISP DNS servers
- External public DNS servers
- Local DNS servers
- Local hosts file (CORRECT)
Woohoo! Local names resolution the address file has been prior to consulting the DNS servers.
6. A website is inaccesible via its URL. You’ve pinged the site and see no problem there. What is the next troubleshooting step?
- Access host file and check for inconsistencies
- Turn the device off and on again
- Use nslookup in the terminal to rule out DNS issues (CORRECT)
- Ping localhost
Right on! By confirming that the hostname properly points to a nameserver, we can get rid of DNS issues. If we copy the IP address from the DNS query results and paste it into a web browser, the website should resolve if DNS is functioning properly.
7. What does PXE Boot stand for?
- Pay-to-Boot Extortion
- Pre Boot Execution (CORRECT)
- Past Boot Examination
- Post Boot Extraction
Right on! The acronym of PXE Boot is Preboot Execution Environment. It is that when the computer boots up, it runs an operating system or application that is available over the network instead of local storage.
8. A sysadmin is looking to use Pre Boot Execution over a network by keeping operating system installation files on a server. Which type of server is this most likely to be?
- TFTP server (CORRECT)
- DNS server
- SFTP server
- FTP server
Well done! TFTP refers to Trivial File Transfer Protocol. It is a very simplified FTP designed for transferring files, usually used in a network setting for purposes like hosting an installation file or transferring small configuration files.