Physical Hardware
Bash
Networking
VMs & Containerization
Tools & Utilities
100
Connecting 8P8C(RJ-45) to CAT cables
What is crimping?
100
The meaning of BASH
What is "Bourne-Again Shell"?
100
The transport protocol used for video streaming
What is UDP(User Datagram Protocol)?
100
The open-source virtualization solution allowing you to virtualize low-level kernel calls to virtualized hardware
What is KVM (Kernel-Based Virtual Machine)?
What is VirtualBox?
What is VMWare ESX? (not open-source!)
What is Hyper-V? (not open-source!)
100
The utility that lists out the ending parts of a file/stream/device/etc.
What is `tail`?
200
The data connector allowing for multiple data streams to be transported from a hard drive to the data bus.
What is SAS (Serial-Attached SCSI)?
200
$ echo sp{el,il,al}l
What is a Shell expansion?
200
A user-space application program that allows a system administrator to configure the tables provided by the Linux kernel firewall and the chains and rules it stores
What is IPTables?
What is Firewall-cmd (firewalld)?
What is ufw (Uncomplicated Firewall)?
200
The operating-system-level virtualization method for running multiple isolated Linux Systems using a single Linux Kernel
What is LXC (Linux Containers)?
What is OpenVZ?
What is Docker?
200
The utility used to concatenate multiple files together
What is CAT? (Concatenates multiple files or streams to stdout.)
300
Arranging wires in this manner helps mitigate noise and interference from outside sources.
What are twisted pairs?
300
*DAILY DOUBLE*
This setting within the `sudoers` file will insult you every time you get type your password incorrectly.
What is `Defaults insults`?
300
In the string, "192.168.2.1/24", the "/24" represents "255.255.255.0". This means that the IP space has 256 unique IP addresses. This 32-bit number takes an IP address, and divides the IP address into the network address and the host address.
What is the subnet mask?
300
In Docker, the manifest used to define what is running and how to run a container
What is a Dockerfile?
300
The name of the daemon running to serve websites content
What is nginx?
What is httpd?
What is Apache HTTPD?
400
Server hardware uses special hardware for out-of-band communication and management of a physical server.
What is an out-of-band management console?
What is Integrated Lights-Out(iLO) (HP)?
What is Dell Remote Access Controller(DRAC) (Dell)?
400
This is used to list ALL environment variables in the your current terminal session
What is `env`?
400
IEEE 802.1Q defines a method of tagging packets that requires the packet's frame to "tag" itself with addition information that is read by a managed switch. The switch will take this information and separate the traffic based on the "tag".
What is a VLAN?
400
The feature of the Linux kernel that partitions kernel resources such that one set of processes sees one set of resources while another set of processes sees a different set of resources
What is a namespace?
400
The utility to figure out if there is an active daemon listening on a specific port. (Note that this does listening port may or may not be available outside of the host.)
What is `netstat -atun`?
What is `nmap`?
500
The common wiring standard for ordering the wires in a 8P8C(RJ-45) connector.
What is T-568A?
What is T-568B?
500
In Bash, `!!` will run the last command that you typed. But what about `!$` or `!!:$`?
What is using the last command's arguments? (History substitution)
500
In IPTables, the basic chain the packet is transferred to after a routing decision has been made. Packets enter this chain just before being sent to the hardware.
What is POSTROUTING?
500
When creating a Docker container that needs credentials to be used, this command exposes the credentials as an environment variable inside the container.
In a dockerfile, what is `ENV`?
In the cli, what is `docker run -e VARNAME='credential'`?
500
This command will list out the average CPU utilization AND disk storage utilization
What is iostat?