Network services

What is a system that transfers, migrates, synchronizes, and archives files

File Server

What is a device or software that connects printers to client computers over a network

Print Server

What is a server that implements SMTP and IMAP protocols to manage electronic messages

Mail Server

What is a server that collects diagnostic and monitoring data from networked devices

Syslog Server

What is a server that hosts and enables users to access web applications

Web Server

What are the parts of AAAA

1. Authentication: Verifies user identity

2. Authorization: Determines user privileges and access rights

3. Accounting: Tracks resource usage and session duration

4. Auditing: Logs activities for security analysis and compliance

What connects to directories like AD, Open Directory, or Novell eDirectory to manage user identification, authentication and restore access

LDAP

1. Used for AAA

2. Centralizes AAA by storing user credentials on a central server

3. Network devices send requests to this server for verification

RADIUS

1. Used for device administration and access management to network infrastructure like routers, switches, and firewalls

2. Separates AAA functions for more control

TACACS+

What is a database management system

SQL server

What provides time synchronization across devices in a network

NTP

What monitors inbound electronic communication and applies filtering rules to block unwanted or malicious messages from entering

Spam gateway

What is a network security solution that provides a single point of protection against various threats

UTM

What manages the optimal distribution of workloads across multiple computing resources

Load balancer

What is a computer system or application that acts as an intermediary between a client computer and the Internet by relaying and filtering requests

Proxy server

What monitors and controls industrial processes remotely

SCADA

What is an interconnected network of devices equipped with sensors that can interact with each other to perform various tasks

IoT

What is a network of computers and components located in a relatively small, close geographical area

Local Area Network (LAN)

What is a network that covers a broad area, effectively the opposite of a LAN in terms of scope

Wide Area Network (WAN)

What is an interconnection of personal devices within the range of an individual

Personal Area Network (PAN)

What is a network larger than a LAN but smaller than a WAN, typically spanning a city or campus

Metropolitan Area Network (MAN)

What is a specialized high-speed network providing access to a consolidated block-level storage

Storage Area Network (SAN)

What is a wireless variant of the LAN that uses wireless communication to connect devices within a limited area

Wireless Local Area Network (WLAN)

What is a network topology where nodes connect dynamically to form a web-like structure, often cited in CompTIA A+ training for its redundancy and coverage capabilities

Wireless Mesh Network

What is a system that uses a public network (such as the internet) to create secure, encrypted connections between remote locations

VPN

What are the three VPN topologies

1. Remote Access (Host-to-Site):

   1. Most secure

   2. An individual user securely connects remotely to a corporate network

   3. Creates an encrypted tunnel to the corporate VPN concentrator to act as if it is directly on the network

2. Site-to-Site

   1. Connects entire networks to each other such as different buildings or sites

   2. VPN is established between two VPN appliances or firewalls instead of individual users

   3. Encrypts all traffic through these devices without software needed on each device

3. Host-to-Host

   1. less common

   2. Software based

   3. Secure tunnel between two specific devices without a dedicated hardware