Documentation

A network protocol used to access network directory databases, which store information about auth...

A means of establishing checks and balances against the possibility that critical systems or proc...

A framework for autonegotiation of secure authentication methods that use hardware identifiers li...

A secure report that proves that a client is running an authorized OS and has up-to-date patches ...

A client-server protocol that enables centralized management of user authentication and access co...

A type of network security zone where hosts that face the Internet are placed for secure external...

A network segment that's isolated from the rest of a private network by one or more firewalls tha...

A measure of a wireless signal's strength as measured at the receiver, measured using either deci...

A mechanism used in wireless networks to select the data transmission rate at the physical layer ...

A unique string used to identify wireless networks. SSIDs have a maximum length of 32 bytes, and ...

A security protocol designed to enhance the security of WEP without introducing breaking changes.

A password-based authentication and password-authenticated key agreement method. SAE is a variant...

An amendment to the normal 802.11 standard that enhances the ability of wireless devices to maint...

A network protocol suite used to secure data through authentication and encryption as the data tr...

aliases: ESP A core protocol of IPsec. ESP is used to encrypt only the payload, and do...

aliases: AH A core protocol of IPSec. AH performs a cryptographic hash on the whole pa...

aliases: Management Frame Protection 802.11w MFP Management Frame Protection: a security feat...

aliases: RDP An application protocol for operating remote connections to a host using a graph...

A framework for creating a security association used with IPsec. Security associations (SAs) esta...

A standard defined by the IETF that defines private IPv4 address ranges.

A widely used software tool used for IP scanning. Nmap requires at least the IP address or the su...

An enumeration of some common host discovery protocols. Cisco Discovery Protocol Used in all Ci...

A proprietary host discovery protocol used in all Cisco network appliances. CDP uses Data Link la...

A command that sanitizes storage drives. SE has been a part of the SATA and SAS specifications si...

An enumeration of the eight logging levels commonly used in computers. Name Description Level ...

Application protocol and event logging format enabling different appliances and software applicat...

A commonly used framework for remote management and monitoring of servers and network appliances....

A database that stores an SNMP agent's activity records and other parameters. Parameters are iden...

A Linux command-line packet capture utility. Basic Syntax tcpdump -i [eth0|any] Flags -w Write ou...

A packet dropping algorithm designed to avoid congestion and buffer filling using predictive mode...

A traffic shaping mechanism that allows for fine-grained control over traffic parameters in a net...

A three-bit CoS priority field within the greater 802.1Q format running at layer 2. 802.1p can be...

A routing technique that directs data based on labels rather than network addresses. Often used i...

A header field used to indicate a priority value for an IP packet for QoS or CoS scheduling. Diff...

A host system or network (called a honeynet) to bait attackers into trying to exploit it. The att...

Provisions and requirements protecting the personal data of EU citizens, disallowing the transfer...

Complete this lab as follows: Crack the root password on Support. From the Favorites bar, selec...

A standards-based approach to technologies that allows hosts to obtain a usable network configura...

AAA protocol developed by Cisco used to authenticate to administrator accounts for network applia...

An XML-based data format used to exchange authentication information between a client and a servi...

A networking mechanism that allows users to access multiple network resources while only having t...

M of N Control - An authorization method that requires $m$ amount of signatures from $n$ authoriz...

Higher accuracy network time synchronization protocol. Defined in IEEE 1588 standard. Designed f...

A set of authentication and identification information issued by a Certificate Authority. Digita...

An authentication and encryption service for the TCP/IP stack. Developed from the now obsolete SS...

Application protocol used to transfer files between network hosts over ports 20 and 21. FTP is mo...

A logical reference to a resource stored on a computer network, serving as a mechanism to retriev...

The foundation of web technology that serves website content to client browsers.  Clients connec...

A mechanism that allowed multiple communication lines to work over a single physical communicatio...

Application protocol used for mail storage and retrieval on a server. IMAP is used on 143/tcp and...

Application protocol used to send mail between hosts on the internet. SMTP uses 25/tcp for messa...

The programming and query language for relational databases.

A dedicated hardware device that provides general storage for an entire network. Usually made wit...

Application protocol that manages VoIP and conferencing communications. SIP is responsible for m...

Network protocol responsible for delivering audio and video data over IP-based networks. RTP doe...

Network protocol responsible for the monitoring and feedback of realtime data communications used...

A hardware appliance or software program that distributes incoming client requests across a set o...

Cisco proprietary protocol designed to provide both redundancy and load balancing for IP traffic.

aliases: FHRP Networking technique that configures failover routers that serve as the d...

aliases: VRRP Open-source standard protocol for configuring failover routers. VRRP is ...

aliases: HSRP Proprietary protocol developed by Cisco. Allows multiple physical routers to se...

The public address of a load balanced cluster that is shared among the nodes. Also called a float...

aliases: ISP A commercial (often subscription-based) company that offers access to the Intern...

Media Access Control address: a 48-bit hexadecimal number used to identify computer systems by th...

The data link layer of the OSI reference model is responsible for transferring data between nodes...

The physical layer of the OSI reference model is responsible for the transmission and receipt ana...

The network layer of the OSI reference model handles the moving of data between networks of netwo...

The upper layers of the OSI model just store collections of functions used commonly to interface ...

An unshielded twisted pair cable category that supports up to 40 Gbps. Cat 8 also includes Cat 8....

An unshielded twisted pair cabling category that supports up to 10 Gbps. Description 600 MHz GG4...

A type of fiber optic cable that uses multiple central cores in order to facilitate multiplex tra...

A form of WDM that transmit and receive data over the same strand of fiber cabling. It uses sligh...

A form of WDM that supports up to 16 different wavelengths, used to deploy four or eight bidirect...

A type of WDM that provisions a bigger number of channels (20-160 in increments of 20). There is ...

The loss of signal strength over a network medium. Attenuation is measured in decibels (dB), whi...

A logical network segment configured on a managed network switch. VLAN membership is configured b...

An enumeration of all the LED colors you might see on a switch or router. Color Status Sol...

aliases: RIP A distance-vector routing protocol. RIP only considers a single metric: the next...

aliases: BGP A specialized dynamic routing protocol for use in routing domains, interne...

aliases: EIGRP A distance-vector dynamic routing protocol. Unlike RIP, EIGRP uses two ...

aliases: OSPF A link-state dynamic routing protocol. OSPF stores the entire network to...

aliases: NTP Network clock synchronization protocol. Designed to be used in packet-swi...

A function on routers that allows them to forward DHCP discover broadcast packets to DHCP servers...

aliases: SLAAC A simpler approach to automatic address assignment in IPv6.

aliases: DNSSEC A spoofing and poisoning mitigation toolset via DNS request validation....

 An electronic measuring instrument that combines several measurement functions into one piece of...

A cumulative permissions system for granular control over folder and files used in the New-Techno...

aliases: DNS The naming system used by computer networks to match human-readable domain names...

aliases: EFS An obscure file system only supported by NTFS used for specific file encry...

A proprietary, Unix-based operating system. Nobody really likes this one. Apple designed macOS fo...

A Windows 10 Pro feature that grants access to a program (of the same name) that'll manage user a...

aliases: KDC A server agent that facilitates the distribution of cryptographic keys, often us...

aliases: TGT An access key granted to approved hosts to access network services or reso...

A network authentication protocol designed to provide secure authentication over unsecured networ...

aliases: GPT A hard disk partition style that works by assigning UUIDs to partitions on...

A type of operating system often used in embedded systems. Features: different algorithms embedd...

aliases: ASIC A type of microprocessor used in embedded systems designed to perform a single ...

aliases: FPGA A type of microprocessor used in embedded systems that is configured by t...

Supervisory Control and Data Acquisition: a hardware device that monitors and controls PLC system...

aliases: HMI A hardware device responsible for facilitating interaction between human users a...

A customizable set of packages that contain the needed components of an ICS. #XI

A special network protocol that enables controller systems to communicate with one another. Modbu...

aliases: PLC A core component of ICSs, a specialized controller programmed to perform specifi...

A form of networking medium that contains the communicated data stream within some sort of cable....

Fourth Extended File Table: an advanced Linux file system. Features: everything from ext2 and ex...

aliases: Windows An operating system. Arguably the most known one. The GOAT, greatest of all ...

aliases: LAN A small computer network confined to a specific geographical location. All of th...

aliases: WAN A network made up of smaller computer networks connected via long-distance links...

aliases: MBR A hard disk partition style that holds information about how the disk has it's p...

An enumeration of the advanced boot options for Microsoft-Windows. Option Description Enab...

aliases: UEFI The modern firmware developed to replace BIOS. Also responsible for managing th...

aliases: RFI A form of interference that interfere with wireless networking. It's usually cau...

File Allocation Table 32: file system introduced with Windows 95, replacing FAT16. Mainly used to...

A Windows 10 feature that enables data transfer capabilities for workstations part of a small pri...

A virtual Linux file system that enables the system to access individual data and audio tracks st...

An enumeration of the common file systems used in Linux or Unix-based systems. File Systems ext2...

Extended File System: a file system originally designed for the Silicon Graphics IRIX OS, but sup...

Virtual File Allocation Table: a FAT32-based file system for Linux. Features: no support for jou...

aliases: NFS A distributed network file system protocol used in Linux or Unix-based systems. ...

Third Extended File Table an updated version of ext2 that supports journaling. #IX

Second Extended File Table: the oldest Linux file system. Features uses standard file hierarchy ...

aliases: BTRFS B-Tree File System: a Linux file system with specialized features not found in...

A mechanism in which file systems will log incomplete write operations into a "journal" file befo...

An enumeration of the different flags and properties files can take in Windows-based systems. ...

A specialized command-line utility in the Linux terminal used to edit permissions for files and d...

An enumeration of some commonly used shell commands in Linux or Unix-based systems. Command De...

An enumeration of the permission system Microsoft-Windows supports for files shared over a networ...

aliases: NTFS The default file system used in Microsoft-Windows. Features larger partition s...

A malware program designed to give the attacker remote access and administrator privileges on Lin...

An external, supplementary antivirus software program for Linux systems. Not generally needed sin...

aliases: COD A document that states a storage disk was properly destroyed by an outsourced, l...

In this case, dumpster diving is when an attacker attempts to find sensitive data by going throug...

A system utility on Windows-based systems that allows the user to monitor running programs and vi...

A system utility on Windows-based systems that allows the user to view information about the hard...

A Windows condition where the system time is out of sync with the time server. There are several ...

A system utility on Windows-based systems that allows the user to customize features of devices a...

An enumeration of the different types of licenses people use to protect their digital property. ...

A Windows 10 feature that enables groups of workstations to be connected and managed from a speci...

A specialized server used to handle authentication requests and enforce security policies on work...

A Windows 10 feature that requests credentials for tasks that require privilege elevation from th...

aliases: SSH A network protocol that enables the secure transfer of data between two clients ...

A Windows 10 Pro feature that allows the user to take control of another workstation remotely ove...

A Windows 10 Pro feature that allows users to gain limited remote access to another system with t...

A feature on Apple-macOS versions X and later that allows for screen sharing between two Mac devi...

A rule when performing system backups that states that an organization should keep three copies o...

Software refers to the electronic instructions and data that will be used by the hardware. Softwa...

aliases: BIOS A legacy firmware program stored in the Read-Only Memory of a computer system. ...

A command-line utility used to help fix startup issues on Windows-based systems. Bootrec can be a...

Boot Configuration Database: A detailed list of the programs the Windows OS is to load at boot ti...

A social engineering attack where the attacker gains access to a secured place simply by closely ...

A type of social engineering that allows the attacker to gain critical and/or sensitive informati...

A social engineering attack where the attacker attempts to gain access to secured data by pretend...

A type of social engineering attack where the attacker configures a rogue access point designed t...

A type of social engineering attack where the attacker attempts to gain secured data or informati...

aliases: DoS DDoS A type of web server threat that overwhelms the target server with loads of...

A type of web server attack where the attacker exploits misconfigured input fields, inputting mal...

A type of web server attack where the injects malicious SQL code into an input field in order to ...

A type of web server attack where the attacker intercepts comms between two devices and modifies ...

A password attack method where the attacker attempts to guess the password through trial and erro...

A type of network attack where an active or former employee of an organization still has access t...

A type of network attack where the attacker scans the network for valid MAC addresses, matches th...

A type of network attack where the attacker exploits a vulnerability previously unknown to the ne...

This principle states that users should only have enough permissions to do their job effectively,...

A database that stores information about all files and directories in the NTFS file system. It al...

A self-replicating type of malware that often mimic or attach to legitimate programs and hide ins...

A type of malware that provides an attacker remote access to an infected system. This program is ...

A type of malware that logs every keystroke a user makes and sends it back to the attacker. This ...

A type of malware that's designed to collect information about the victim who's system got infect...

A malware program that forces the victim to either send a form of payment in order to decrypt the...

A malware program that uses the resources of a system to mine cryptocurrency for the attacker.

A form of database encryption that encrypts the entire database and all of its backups. TDE is ty...

A form of database encryption that allows the database administrator to encrypt each column or se...

A form of database encryption where the program that's used to create and manage the stored data ...

aliases: PII Information about a person that can be used to compromise computer systems simpl...

A version of Windows-BitLocker that can be used for USB drives. #XIV

A Windows 10 Pro feature that allows for the encryption of entire hard drives. BitLocker utilizes...

A form factor specification for motherboards, defining them as 9.6 x 12 inch motherboards, and th...

An uncommon form factor specification for defining motherboard sizes, using a unique back panel d...

A hardware extension to a motherboard that allows for more expansion slots to be installed and co...

A reference to the physical devices and circuits that make up the different parts of a computer s...

A form of user authentication that requires several methods instead of just one in order to grant...

A document that defines password requirements on company-owned systems. It specifies: Minimum le...

A document that defines restricted areas within company premises, identifies which employees are ...

The physical channel through which data communications travel; the connecting method between netw...

A hardware device designed to monitor and protect computer networks from suspicious, malicious, a...

A type of monitor that produces image by moving liquid crystals that block or allow light to pass...

A set of procedures defining how evidence is handled after a security breach in an enterprise set...

aliases: PCI DSS The legal standards for financial data storage at enterprise levels. There a...

A congressional act that forces public companies to be transparent in regards to creating and mai...

A Congressional act that forces companies that offer loans, investment advice, or loans to adhere...

A hardware piece on a computer where an electrical connector can be used to link the device to ot...

The act of sending malicious messages intended to fool and/or manipulate a victim into giving up ...

A specific type of phishing that targets high-value individuals within an organization, such as t...

A type of phishing where the attacker researches the target extensively to craft a personalized m...

The first IoT layer. Refers to all the hardware parts in the IoT system. Primary Sensors These in...

A location service that triangulates a device's position relative to other radio sources (e.g. ce...

A hardware device used to collect data travelling across the network its connected to. The data c...

An unshielded twisted pair cable category that supports up to 100 Mbps Ethernet. Description RJ1...

The better version of Cat-6. Provides better shielding and tighter cable twists, which reduces cr...

aliases: SATA A type of port used to connect internal hard drives to the motherboard. It's da...

Power-On Self Test: A legacy firmware system used to detect and inform the user of problems that ...

A network cable used to connect computer systems to a network through a hub or switch. #III

A wiring standard for the RJ45 connector as defined by the order of the wires that connect to the...

A type of connector used to connect computer systems using fiber optic cabling. An ST connector: ...

An enumeration of all the different types of connectors listed in the A+ course. Connector Types ...

An analog signal that corrupts or destroys regular signals used by communicating devices on netwo...

aliases: EMI A type of interference that affects wired network signals. EMI signals are emitt...

A storage sector in the computers hardware that houses stuff that the processor is immediately wo...

A hardware device used to get input from the user, usually to interact with the GUI. A mouse can ...

A proprietary video port connector designed by Intel and Apple. It provides video, audio, DC powe...

Point-to-Point Protocol over Ethernet: an Internet protocol designed for Digital-Subscriber-Line ...

aliases: DSL A service that provides Internet over telephone lines. There are two types of DS...

A form of interference where signals transmitted on one cable escape and damage signals being tra...

An alternative to virtual machines, which runs consistent runtime environments for specific progr...

A hardware device that stores an electrical charge. The basis for all computer systems. #II

aliases: VDI A type of virtualization that uses remote connection to run multiple operating s...

A web-based collection of articles and documents related to an organization's FAQ. This collectio...

aliases: AUP A security policy that dictates how an employee is permitted to use company prop...

A security policy that dictates a set of Internet safety guidelines that employees should follow ...

Any hardware device that can connect to a computer network and interact with other devices connec...

aliases: CIFS A network file system protocol that allows user to access files and printers ov...

aliases: ESD The discharge of accumulated static electricity from a non-grounded object to a ...

An enumeration of the private IP addresses. Class A 10.0.0.0 - 10.255.255.255 Class B 172.16.0.0 ...

An enumeration of all the public IP addresses. Class A 1.0.0.0 - 126.255.255.255 Class B 128.0.0....

aliases: USB A hardware port designed to be universal for anything and everything. USB provid...

A common short-range IoT communication protocol. Features open standard max distance of 60 feet ...

A common short-range IoT communication protocol. Features: closed standard, devices must meet se...

aliases: DP A royalty-free, modern video connection port standard found mostly on PCs. Featur...

The default Random-Access-Memory module used in desktops. DIMM RAM modules store data using a sin...

aliases: EEPROM Electrically Erasable Programmable Read-Only Memory: non-volatile memory that...

A form of networking medium that doesn't physically contain the communicated data stream (e.g. wi...

An unbound networking medium that uses light waves and fiber optic cabling to transmit data. #III

aliases: MSD A document that explains how to properly handle certain dangerous materials and ...

An item or piece of information that is valuable and is important to keep for an organization. #II

A type of interference that's caused by strong magnetic impulses. It affects hard drives the most...

aliases: OLED A variant of LED that uses a different type of technology to produce a higher r...

aliases: GSM A mobile device authentication system that allows cellular network subscribers t...

aliases: CDMA A mobile network authentication system that allows cellular network providers t...

A measurement of the max amount of power an antenna can radiate in a specific direction.

aliases: UDP A connectionless protocol that sends packets to the receiver regardless of check...

aliases: TCP Transmission Control Protocol: connection oriented data transfer protocol that e...

The international governing body that manages all IP addresses used ever. IANA is owned by the In...

An addressing system in place to use special IP addresses when something goes wrong with the DHCP...

A document or collection of documents that provide information about how the organization structu...

aliases: TLD The ending of most web domain names. Domain Purpose .org Non-Profit Organ...

aliases: DKIM An email authentication protocol that detects and blocks spoofed emails by vali...

aliases: SPF An email authentication protocol detects and blocks spoofed emails by validating...

aliases: DMARC An email authentication protocol that combines the functionality of DKIM and S...

An enumeration and description of the three major email protocols. Sending and receiving emails i...

aliases: DHCP A system that automatically sets and manages network connection configuration s...

The second IoT layer. Refers to the point where the analog/physical data captured by the edge tec...

The global computer network that communicates via standardized protocols. The third IoT layer. Re...

The fourth IoT layer. Refers to the processing that happens after data captured and prepared by t...

A type of hardware that converts image and text files on a system and prints them onto a piece of...

aliases: ACL The most basic rulebook used in firewalls. Note: access control lists process r...

A hardware device or software program that monitors and filters incoming and outgoing network tra...

An enumeration of the network location profiles used in Microsoft Windows. They're used to set de...

A network protocol that is used to allow multiple computers to share a single public IP address f...

The type of security policy that dictates how data backups are run at an organization. This inclu...

A database that stores information about assets procured and owned by an organization. Asset mana...

Undervoltage that lasts seconds (lights may dim)

Complete power failure.

A software implementation of a computer that executes programs just like a physical machine.

A software layer used to run multiple operating systems concurrently on a single machine. It allo...

Specialized software that assumes the responsibilities of a physical router for virtual machines.

Specialized software that enables communication between virtual machines by first checking the da...

A file created within the host OS of a virtual machine that assumes the responsibilities of a phy...

Specialized software that acts as a network firewall device for virtual machines. It provides pac...

A Windows 10 Pro feature that allows for virtual machines to be created on Windows, each running ...

A mechanism in Microsoft Windows that automatically manages the swapping of data between physical...

External components that send and/or retrieve data from a computer. Categories Input Output Inpu...

A hardware device used to receive (mostly) text-based input from the user. Keyboards connect thro...

A hardware device that captures an analog signal and turns it into digital data. Examples include...

A hardware device used to scan hard-copy images and documents and convert them into digital files...

A hardware device that allows multiple computer systems to be used with only one keyboard, mouse,...

A hardware device that's able to detect the slightest of movements within a preset area. Motion s...

A hardware device that converts sound into an electrical signal.

A type of printer that converts text and image files and prints it onto a sheet of paper using so...

A communication protocol for mobile devices that facilitate data transfers. NFC is typically used...

Evolved High Speed Packet Access (HSPA+). An extension of the 3G cellular network technology. It ...

An extension of the 3G cellular network technology, which uses smart antennas to improve the perf...

An extension of the 3G cellular network technology. It increased downlink/uplink speeds to 100/50...

Successor to LTE. Increased downlink/uplink speeds to 1 Gbps/500 Mbps.

The international governing body that manages all IP addresses used ever. IANA is owned by the In...

A collection of software on a computer that allows the user to access and use the computer's memo...

An OS component responsible for handling interaction between the user and the system. Command-Lin...

A Windows 10 Pro feature that enables administrative management features for use in an enterprise...

A specialized software program installed on Microsoft-Windows machines, used to edit internal sys...

The Samba Project is the standard Windows interop suite for Linux and other Unix-based operating ...

A proprietary operating system developed and owned by Google, based on Linux. Chrome OS offers a ...

The main password management tool used in macOS. Features: passwords for websites for system lo...

aliases: UUID A 128-bit label used to identify objects in computer systems. Also known as Glo...

A special file system designed for flash drives with large storage capacities (greater than 32 GB...

aliases: GUI A software program that uses icons, menus, and other visual components to intera...

Rules and procedures that have been set by an organization to address a particular problem or con...

A procedure defines a desired outcome, and outlines the steps that, when taken, should lead towar...

A document that states a representative of an organization has permission to place an order and t...

An ethernet router is a device that connects two or more network segments or subnets. Common rout...

Servers provide file storage, manage Active Directory, provide IP addresses using DHCP, and more....

A logical division of the available space on a hard disk drive, carved out to save data. It can t...

An enumeration of all the disk and volume stati hehe fnuuy that can be displayed in the Disk Mana...

A form of error-correcting code that's used to detect accidental changes or corruption in digital...

A 3D printing material made of a thermoplastic polymer. It comes in spools of different thickness...

aliases: SMB A data transfer protocol that is responsible for client-server communications fo...

A modern way of utilizing multiple physical storage devices to manage storage of large amounts of...

A directory used to add space to a storage device that is at it's maximum capacity, partitioned u...

A single storage space within a computer, used to link multiple partitions together. The partitio...

An enumeration of the different ways a user can install Microsoft-Windows onto their system. Ther...

The spaces above false ceilings and below raised floors, usually used to wire electrical wiring f...

Organizations establish a general procedure that overarches into most departments. It provides em...

A tool that is used to secure cable wiring to a punch-down block or a patch panel. #I

An offline hardware device that goes online to provide power when an undervoltage event occurs. #II

The process that is followed when an organization ends a partnership with an employee. This inclu...

A rating level for twisted-pair cables, designed to run between floors through open vertical shaf...

aliases: NDA A document that, when signed, restricts an employee from sharing sensitive infor...

A variation of the SCSI port that uses a parallel bus. It has 50, 60, and 80 pin connectors on ri...

Tickets are digital files that record issues and their resolutions for organizations to solve and...

A hardware extension used to troubleshoot motherboard issues when video displays are down. L bozo...

A type of Random-Access-Memory that stores data using four transistors for every bit of data. #III

Readonly version of RAM. Stores important functions for the computer.

The process of modifying the operating characteristics of a processor based on current conditions...

An act that pushes a processor beyond it's designed specifications. #III

A serial protocol for SCSI commands, the replacement for Parallel SCSI. It has throughput speeds ...

Small Outline Dual Inline Memory Module: A smaller type of Random-Access-Memory module that has u...

The sampling rate is the number of analog signal samples taken over a period of time. Measured in...

A form of power supply that converts the DC power in a computer to AC power for a screen. #XII

aliases: PCIe One of the faster expansion bus types, one of the children of Peripheral-Compon...

The main consumable component in any printer. It's a reservoir that carries ink or toner for use ...

Software written to the Read-Only Memory of a PC. Used to help the system start up, help manage c...

aliases: EOL A term used to describe software that will no longer be maintained or updated by...

The most basic component of an operating system, serving as the core of the OS. Responsible for r...

A table stored in network switches that stores information about the MAC addresses of the hosts i...

A unshielded twisted pair cable category that supports up to 10 Gbps. Description RJ45-Connector...

A type of fiber optic cable that transfers data only using a single light ray, used for high tran...

A type of coaxial cable that is used for video transmission in CCTV systems, formerly used to tra...

The predecessor to the network switch. A network hub only works at the Physical layer. It forward...

A coaxial cable specification used for cable TV, satellite TV, and broadband cable internet. They...

A special layer used in fiber optic cabling used to prevent stray light waves from exiting the ca...

A patch panel provides an easy way to connect devices and accommodate different types of cabling,...

A type of connector used to connect computer systems using fiber optic cabling. An SC connector: ...

An EMI resistant, sturdy cable type used to transmit radio signals, digital audio, TV cabling, ph...

An ethernet switch lets you connect multiple devices to the same network segment, but does NOT co...

A type of network cable that uses light to transmit data in a glass or plastic cable. Wavelength ...

An enumeration of the most common v6 address prefixes and their uses. Type Prefix Leading Hex ...

A wiring standard for the RJ45 connector as defined by the order of the wires that connect to the...

The transport layer is responsible for organizing incoming data packets using their content, and ...

A moment of increased voltage being provided to the systems connected to a power supply, lasting ...

A moment of increased voltage being provided to the systems connected to a power supply, lasting ...

A moment of decreased voltage being provided to the systems connected to a power supply. e.g. 110...

A piece of hardware that filters power surges before they reach connected systems, along with pow...

A piece of hardware that filters power surges before they reach connected systems, along with con...

A type of cable tester that uses time domain reflectometry to characterize and locate faults on m...

A common type of connector used to connect devices to twisted pair cables. RJ45 Connectors: have...

A type of port used to connect serial devices to a computer system, like a barcode scanner. Also ...

Step-by-step tutorial for Linux static IP configuration. View the current state of the network ...

A Layer 2 protocol that enables hosts to map IP addresses to MAC addresses in their local network...

A type of network that uses encryption to forward IP traffic over a TCP/IP network. Tunneling pr...

aliases: NIC A hardware device responsible for managing the communication between a PC system...

The process that is followed when an organization enters a partnership with a new employee. This ...

A type of time domain reflectometer that is used with optical fiber. #II

#I Component Visualization A = Ethernet routerB = Ethernet switchC = Ethernet patch panelD...

aliases: PCI The most common expansion bus type, with three generations, PCIe x16 being the f...

An operating system. The grandfather of the Big Three. An open-source, Unix-like OS. Anyone is fr...

aliases: SCSI A type of port used to connect internal hard drives to the computer system. It'...

The better version of Cat-5, since it provides better EMI protection. Description RJ45-Connector...

An enumeration every single cable type listed in the A+ course. Network Cables Copper Cabling C...

A deprecated type of connector used to connect devices to twisted pair cables. RJ11 Connectors: ...

A type of network cable that twists the wires in order to achieve better performance. There are t...

A commonly used asymmetric encryption algorithm used for creating digital signatures.

A more modern asymmetric encryption algorithm. ECC is able to generate smaller keys and is more ...

An asymmetric encryption algorithm created to let two users that are stranger to each other to sa...

A more modern asymmetric encryption algorithm.

An open standard for passwordless authentication. The latest version of FIDO (FIDO2) relies on W...

A patch management tool that allows client on a network to download software updates from an inte...

A Cisco-owned NAC solution that uses policy-driven decision making to authenticate and authorize ...

Open Source Intelligence A collection of resources and tools that are separated by common catego...

A passive reconnaissance tool. theHarvester is used to gather information from a variety of publ...

A popular search engine for IoT devices. Users are able to search for specific types off devices...

A reconnaissance tool that performs DNS enumeration, and can find records and entries for a speci...

A method of port scanning that uses publicly available exploitation detection sites to preserve a...

An automated scanner that can be used to enumerate and search for specific vulnerabilities. Sn1p...

A proprietary vulnerability scanner developed by Tenable.