CompTIA A+ CORE 2

Question 1

Remote Authentication Dial-In User Service (RADIUS)

Answer 1

A networking protocol that provides AAA services for users accessing a network. It’s often used to authenticate users connecting through VPNs, wireless networks, or dial-up services.

Question 2

Terminal Access Control Access-Control System Plus (TACACS+)

Answer 2

A network protocol used for centralized authentication, authorization, and accounting (AAA) services, primarily for managing access to network devices (e.g., routers, switches).

Question 3

Organizational Unit (OU)

Answer 3

A tool to organize a domain into smaller, manageable sections. You can give specific permissions to managers and administrators

Question 4

Active Directory

Answer 4

a directory service developed by Microsoft that provides centralized authentication, authorization, and directory services.

Question 5

Screened Subnet (DMZ)

Answer 5

Screened subnet is that some hosts are placed in a separate network segment with a different IP subnet address range than the rest of the LAN.

Question 6

Kerberos

Answer 6

Kerberos is a system used on Windows networks to help users log in securely and easily. It allows a user to log in once and access multiple network services without having to re-enter their password each time (calledsingle sign-onor SSO).

Question 7

Port Triggering

Answer 7

configure your router to open a specific port only when a device on your network requests it. Like opening the door when someone knocks.

Question 8

Port Forwarding

Answer 8

You configure your router to direct incoming traffic on a specific port to a particular device on your network. It’s like leaving a specific door open all the time.

Question 9

Virus

Answer 9

Malware hidden within an executable file that infects a system when the file is run.

Question 10

Boot Sector Virus

Answer 10

Infects the boot sector or partition table of a disk drive. It hijacks the bootloader to load itself to the memory.

Question 11

Trojan

Answer 11

Malware disguised as legitimate software, often embedded in an installer.

Question 12

Worm

Answer 12

Self-replicating malware that spreads through system memory or network vulnerabilities.

Question 13

Remote Access Trojan (RAT)/Backdoor

Answer 13

Malware designed to give authorized remote access to a system.

Question 14

Spyware

Answer 14

Alters browser settings like changing search providers, adding bookmarks, and enabling tracking cookies.

Question 15

Keylogger

Answer 15

Spyware that captures keystrokes to steal sensitive data like passwords.

Question 16

Rootkit

Answer 16

Malware that gets privilege access (root level access) to a system and conceal its presence.

Question 17

Ransomware

Answer 17

Malware that obtains money by locking access to systems or encrypting data.

Question 18

Cryptominer

Answer 18

Malware that hijacks system’s resources for cryptocurrency mining.

Question 19

Command and Control (C2)

Answer 19

A computer server controlled by an attacker which acts as a central hub for malicious activity. It allows the attacker to communicate with and control infected devices on a network which are called bots or zombies.

Question 20

Fileless Malware

Answer 20

Malware that operates without installing traditional executable files. It can use legitimate scripting environments like PowerShell or JavaScript in PDFs to execute malicious code in memory.

Question 21

Secured Shell(SSH)

Answer 21

A protocol used to securely connect to another computer or sever over a network. You can have a secure connection even if internet connection is not safe. Can use it to run commands, transfer files, and manage computers. To connect, you need to provide a SSH key or password.

Question 22

End User License Agreement (EULA)

Answer 22

A legal contract between a software developer (or company) and the person/organization using the software.

Question 23

Computer Security Incident Response Team (CSIRT)

Answer 23

A group of experts responsible for handling and responding to cybersecurity incidents within an organization.

Question 24

Forensics Team

Answer 24

A team specialized in investigating and analyzing cybercrimes or security incidents by studying digital evidence like computer logs, files, or network activity.

Question 25

Degaussing

Answer 25

Hard disk is exposed to a powerful electromagnet that disrupts the magnetic pattern that stores data on the disk surface.

Question 26

Secure Erase (SE)

Answer 26

Performs zero-filling on hard disk drives and marks all blocks as empty on solid state drives (SSDs).

Question 27

Instant Secure Erase (ISE)/Crypto Erase

Answer 27

Utilizes self-encrypting drives (SEDs). The Media Encryption Key (MEK) encrypts all data. It works like a magic key that can instantly reset the lock and scramble all the documents inside, making them completely unreadable.

Question 28

Occupational Safety and Health Administration (OSHA)

Answer 28

emphasize proper safety practices during maintenance tasks.

Question 29

Standard Operating Procedure (SOP)

Answer 29

A set of step-by-step instructions created by organization to help employees carry out routine operations consistently and effectively.

Question 30

Material Safety Data Sheet (MSDS)

Answer 30

A document that provides detail information about a chemical substance including hazards, storage instructions, and first-aid measures.