Certified - CompTIA Network + Audio Course

This episode examines the Internet Control Message Protocol (ICMP), which communicates error messages and diagnostic information between devices. ICMP is not used to transmit application data but ins…

This episode introduces Session Initiation Protocol (SIP) and other Voice over IP (VoIP) protocols that support modern telephony systems. SIP establishes, manages, and terminates calls, while protoco…

This episode covers Simple Network Management Protocol (SNMP), which enables administrators to monitor and manage network devices. SNMP uses a manager–agent model, where agents on devices report stat…

This episode introduces file and print services, focusing on the Server Message Block (SMB) protocol and the role of SQL-based services in network environments. SMB allows file and printer sharing ac…

This episode introduces four essential network services: Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Network Time Protocol (NTP), and Syslog. DNS translates hostnames into I…

This episode covers web and directory service protocols, which form the backbone of modern communication and identity management. Hypertext Transfer Protocol (HTTP) provides the foundation for web tr…

This episode introduces the protocols that enable email delivery and retrieval. Simple Mail Transfer Protocol (SMTP) is used to send messages, while Post Office Protocol version 3 (POP3) and Internet…

This episode covers remote access protocols, which enable administrators to manage systems from a distance. Telnet, one of the oldest methods, is introduced as insecure due to its plaintext transmiss…

This episode introduces the protocols commonly used for transferring files across networks. File Transfer Protocol (FTP) is explained as a traditional method operating over TCP, often requiring addit…

This episode explains the concepts of virtual IPs and subinterfaces, which extend logical addressing capabilities. A virtual IP is an address shared among devices, often used for redundancy and load …

This episode introduces IPv6 transition technologies, which allow networks to support both IPv4 and IPv6 during the migration period. Methods such as dual-stack, tunneling, and translation are explai…

This episode covers IPv6 subnetting, which operates differently from IPv4 due to its larger 128-bit address space. Instead of conserving addresses, IPv6 subnetting focuses on structured planning and …

This episode walks through the process of IPv4 subnetting, a skill that requires practice and speed for the exam. It explains how to take a given network address and divide it into smaller subnets by…

This episode introduces Classless Inter-Domain Routing (CIDR) notation, the shorthand system used to represent IP address ranges with a suffix indicating the subnet mask. For example, 192.168.1.0/24 …

This episode introduces classless addressing and Variable Length Subnet Masking (VLSM), which replaced the limitations of classful addressing. Classless addressing allows networks to use subnet masks…

This episode reviews classful IPv4 addressing, a historical system that divided addresses into five classes: A, B, C, D, and E. Each class had predefined ranges and default subnet masks, such as Clas…

This episode explains the role of the default gateway, which directs traffic from a local network to destinations outside its subnet. Without a properly configured gateway, devices can communicate in…

This episode introduces the different types of IPv6 addresses, which define how communication occurs within an IPv6-enabled network. The three main categories are unicast, which delivers data to a si…

This episode compares IPv4 and IPv6, highlighting their structural differences and why both remain important on the exam and in practice. IPv4 uses 32-bit addressing, expressed in dotted decimal nota…

This episode introduces Automatic Private IP Addressing (APIPA) and EUI-64 addressing. APIPA is a fallback mechanism in IPv4 where devices assign themselves an address in the 169.254.0.0/16 range whe…