2.1 – Ports and Protocols
Introduction to IP
The Internet uses a standard set of protocols to send traffic from one part of the world to another. In this video, you’ll learn about IP, TCP, UDP, port numbers, and how they all work together to enable worldwide communication over our wired and wireless networks.
Common Ports
Applications commonly use a well-known port number for network communication. In this video, you’ll learn about the common ports for FTP, SSH, Telnet, SMTP, DNS, DHCP, HTTP, HTTPS, POP3, IMAP, SMB, LDAP, LDAPS, and RDP.
2.2 – Wireless Networks
Wireless Network Technologies
We often use many different wireless in a single day. In this video, you’ll learn about 802.11 frequencies and channels, Bluetooth technologies, RFID, and near field communication (NFC).
2.3 – Network Services
Network Services
It takes many different services to keep a network running. In this video, you’ll learn about DNS, DHCP, file sharing, print servers, mail servers, Syslog, web servers, authentication, spam gateways, all-in-one security appliances, load balancers, proxy servers, SCADA, legacy systems, embedded devices, and IoT (Internet of Things).
2.4 – Network Configurations
DNS Configuration
Our DNS servers provide critical name resolution services for nearly every device on the network. In this video, you’ll learn about DNS records for address (A, AAAA), canonical names (CNAME), mail exchanger (MX), text (TXT), Domain Keys Identified Mail (DKIM), Sender Policy Framework (SPF), and Domain-based Message Authentication, Reporting, and Conformance (DMARC).
DHCP
We rely on the dynamic host configuration protocol (DHCP) to automatically assign IP addresses to our network devices. In this video, you’ll learn about the DHCP process, scopes, pools, and DHCP address reservations.
VLANs and VPNs
We can provide network protection and segmentation through the use of virtual local area networks (VLANs) and virtual private networks (VPNs). In this video, you’ll learn about separating broadcast domains into separate VLANs, and how remote connectivity can be protected through the use of encrypted client-to-site or site-to-site VPNs.
2.5 – Network Devices
Network Devices
A data center contains uses many different network devices to keep the data flowing. In this video, you’ll learn about routers, unmanaged and managed switches, access points, patch panels, firewalls, power over Ethernet, cable and DSL modems, ONTs, and NICs.
2.6 – Network Configurations
IPv4 and IPv6
The Internet Protocol (IP) is the most popular protocol on the Internet. In this video, you’ll learn about IPv4 address structures, public IP addresses, private IP address ranges, and IPv6 address structures.
Assigning IP Addresses
Assigning an IP address may take a number of different strategies to make the process automatic and scalable. In this video, you’ll learn about the most important aspects of configuring an IP address, the differences between static and dynamic IP addressing, and how APIPA can be used when a DHCP server is not available.
2.7 – Network Connections
Internet Connection Types
There are many ways to connect to the Internet. In this video, you’ll learn about satellite connections, fiber links, broadband cable, DSL, cellular options, and WISPs.
Network Types
The categorization of a network is closely associated with its size and location. In this video, you’ll learn about LANs, WANs, PANs, SANs, and WLANs.
2.8 – Network Tools
Network Tools
There are many tools a network technician should keep in their bag. In this video, you’ll learn about crimpers, Wi-Fi- analyzers, tone generators, punch-down tools, cable testers, loopback plugs, and network taps.