System Administration and IT
Infrastructure Services. Week 2: Network
and Infrastructure Services Already
Solved
Which of the following is considered a physical infrastructure service? Check all that apply.
✔✔laptop
...
System Administration and IT
Infrastructure Services. Week 2: Network
and Infrastructure Services Already
Solved
Which of the following is considered a physical infrastructure service? Check all that apply.
✔✔laptop; Physical infrastructure services are comprised of the physical hardware that an
organization uses in their IT environment.
desktop
rack server
Which of these is considered a network service? Check all that apply. ✔✔wireless internet;
Network services are comprised of networking components that an organization uses in their IT
environment, like network protocols, network hardware, etc.
DNS
Ethernet cables
Which of these is considered a software service? Check all that apply. ✔✔chat applications;
Software services are comprised of the software that an organization uses in its IT environment.
word processors
email applications
If you're running a server, which one of the follow operating systems would be best suited for your
server? ✔✔Ubuntu Server; When running a server, it's best to use a server operating system that's
been specifically optimized for server performance.
What are the benefits of virtualizing servers? Check all that apply ✔✔Better hardware resource
utilization; Virtualizing servers offer lots of benefits, like enabling hardware to be better utilized,
easier to maintain, and generally lower in cost.
easier maintenance
lower costs
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; To make an SSH connection from one
machine to another, you need to have an SSH client on the machine you want to connect from,
along with an SSH server on the machine you want to connect to.
An SSH server on the machine you want to connect to
What is one benefit of using TFTP over SFTP? ✔✔Simpler transfer without authentication; 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.
What service can you use to keep time synchronized across the machines on your fleet? ✔✔NTP;
NTP, or network time protocol, is used to keep time synchronized across machines.
What features does a proxy offer? Check all that apply. ✔✔network privacy; A proxy acts as an
intermediary between your company and the Internet. Because of that, you have network privacy
and can monitor and filter network traffic.
network traffic monitoring
internet traffic filtering
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
NTP
SFTP ✔✔SFTP; Not quite. There's a network protocol that maps IP addresses to hostnames. Please
refer back to Lessons 9-11 on DNS for a refresher.
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? ✔✔DHCP; You can use DHCP to
dynamically assign IP addresses to computers.
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