Physical Hardware
Bash
Networking
VMs & Containerization
Tools & Utilities

100

The official name for an "RJ45" connector.  "RJ45" is generally used incorrectly to refer to this.

What is 8 position, 8 contact (8P8C)?


100

The name of the configuration that is run every time you start Bash.

What is /etc/profile,
 /etc/bash.bashrc,
 ~/.bashrc,
 ~/.bash_profile,
 ~/.bash_login,
 ~/.profile,
 BASH_ENV?


100

The transport protocol used for peer-to-peer data transmission for torrents.

What is UDP(User Datagram Protocol)?

100

In Container Linux, the common daemon used to synchronize configuration data.

What is etcd?


100

The utility that lists information about a given user account.

What is `finger`?


200

The main physical difference between CAT5E and CAT6.

What are troughs / cable spine / pair separators?


200

This directive will correlate a typed in string to be mapped to another command or string.

What is `alias`?

`alias la="ls -lah"`

200

This service on a network provides a mapping between MAC addresses and IP addresses. Additionally, this protocol can also define default gateways and default routes within the IP space.

What is DHCP (Dynamic Host Configuration Protocol)?

200

The name of the common disk storage type used by KVM?

What is QCOW2? What is RAW?


200

The utility that reads from standard input and writes to standard output AND files

What is `tee`?

300

This type of memory can detect and correct the most common kinds of internal data corruption. It is used in most computers where data corruption cannot be tolerated under any circumstances, such as for scientific or financial computing.

What is Error-correcting code memory (ECC memory)?

300

*DAILY DOUBLE*

This symbol, when passed into `cd` will change your working directory to the previously visited directory.

What is `-`?


Try `cd -`... after visiting two different directory paths.


300

In IPTables, the basic chain the packet is transferred to BEFORE a routing decision has been made. Packets usually enter this chain before any other deciding if this packet is addressed to this server.

What is PREROUTING?


300

In a Dockerfile, this is the directive that defines which image your new docker container will be based-off of.

What is `FROM`?

300

This tool is used to browse the internet without a Graphical interface.

What is `links`, `lynx`, or `CURL`?


400

Server hardware uses special hardware for out-of-band communication and management of a physical server. Often times, it DOES NOT require the server to be powered on, just plugged in.

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 environment variable will store the return code of the previously entered command.

What is `$?`?


Run `echo $?`.

400

The subsystem that IPTables communicates with to manage packet routing.

What is netfilter?


400

A Linux kernel feature that limits, accounts for, and isolates the resource usage (CPU, memory, disk I/O, network, etc.) of a collection of processes.

What are `cgroups`?

400

The utility will show you the information about the hostname, machine ID, Boot ID, Operating System, Kernel version, and architecture.

What is `hostnamectl`?


500

This interface allows you to transmit data over a high-speed fiber optic connection.  It uses LCLC Duplex cables to send and receive at speeds of 10GB/s or higher.

What is SFP+(enhanced small form-factor pluggable) transceiver?


500

This keyboard shortcut will move your cursor between the start of the command line and the current cursor position (and back again).

What is `Ctrl + xx`?

500

This is used to send packets/message to all local clients on the same subnet as you. Generally the data is transmitted over UDP.

What is the `broadcast address`?

500

This classification of hypervisors are native or bare-metal hypervisors. This requires the hypervisor to be the base layer interacting with the physical hardware.

What is a "Type-1" hypervisor?

500

This utility will list out current network activity and disk utilization.

What is `nmon`?  (It totally does more as well...)