CompTIA Network+ (N10-009) Study Notes

This set of flashcards is designed to cover key vocabulary and concepts important for understanding the CompTIA Network+ (N10-009) certification exam.

CompTIA Network+ Certification Exam

First networking certification for IT or cybersecurity entry, focused on network infrastructure.

Networking Concepts

Domain of the CompTIA Network+ exam covering 23% of questions, focuses on network topologies and protocols.

Subnet Mask

A mask used to determine what part of an IP address is the network and which part is the host.

Dynamic Host Configuration Protocol (DHCP)

A network management protocol for automatically assigning IP addresses to devices.

SSID (Service Set Identifier)

The name given to a wireless local area network.

VLAN (Virtual Local Area Network)

A logical subdivision of a network that segments it into separate broadcast domains.

Transmission Control Protocol (TCP)

A connection-oriented protocol that ensures reliable delivery of packets across the network.

User Datagram Protocol (UDP)

A connectionless protocol that is used for transmitting data without prior handshaking.

Encryption

The process of converting information into a code to prevent unauthorized access.

Virtual Private Network (VPN)

A method for securely connecting to a private network across the internet.

Intrusion Detection System (IDS)

A system that monitors network traffic for suspicious activity and sends alerts.

Firewall

A network security device that monitors and controls incoming and outgoing network traffic based on established security rules.

Mean Time Between Failures (MTBF)

The predicted elapsed time between inherent failures of a system during operation.

Denial of Service (DoS) Attack

An attack that aims to make a machine or network resource unavailable to its intended users by overwhelming it with requests.

Zero Trust Security

Security model that assumes threats could be internal or external and thus verifies every request as though it originates from an open network.

Maximum Transmission Unit (MTU)

The largest size of a packet that can be sent over a network.

Active Directory

A directory service developed by Microsoft for Windows domain networks to manage permissions and access to networked resources.

Quality of Service (QoS)

A networking technology that manages data traffic to reduce latency and ensure performance for critical applications.

Network Address Translation (NAT)

A method used to map private IP addresses to a public IP address.

Remote Desktop Protocol (RDP)

A proprietary protocol developed by Microsoft, allowing users to connect and operate a remote computer over the network.