CompTIA Network+ N10-008

Explore networking fundamentals, terminology, and key models like the OSSI model in the DoD framework, TCP/IP topologies, cables and connectors, Ethernet and IP protocols, and data center to cloud connectivity.

Create and test a basic network in packet tracer by linking two devices with cables, configure 192.168.1.1 and 192.168.1.2, enable http, and browse the server page to show two networks.

Explore common networking terms, including ip address, mac address, interfaces, and protocols; discover how ip addresses change across networks and how sockets, ports, and addresses identify unique connections.

Explore ports and sockets in Windows using ipconfig and netstat to observe listening versus established TCP and UDP connections, including IPv4 and IPv6 addresses and bound ports.

Explore the osi model from layer seven to the physical, learning how data units are named (pdu) and encapsulated, with tcp/udp roles, handshake, and practical layer responsibilities.

Explore the DOD model mapping to the TCP/IP suite and contrast connection oriented TCP with connection less UDP, IP, and ICMP across the four layers.

Capture multicast traffic with wireshark to observe igmp membership reports and queries as devices join IPv4 multicast groups such as 224.0.0.251.

Explain local, metropolitan, and wide area networks, plus pan, campus, man, can, and san, with wlan and ethernet backbones.

Understand how the control plane creates a virtual network overlay with VPN tunnels over the forwarding plane, enabling SD-WAN routing with dynamic, best-path selection and end-to-end control.

Explore networks and terminology, compare OSCE model to DOD model, and review TCP IP core protocol suite and network topologies to build a foundation for the next module.

Explore ethernet standards, copper and fiber optic cable types, connectors, media converters, transceivers, and cable management, with practical guidance on base speeds, distances, and wave division multiplexing.

Explore copper cable types for local area networks, including utp, stp, coaxial, and twinax, with shielding and category ratings. Differentiate network speed in bits per second from storage in bytes.

Explore how fiber optic cables transmit light through a glass core with cladding, avoiding electrical interference in LAN backbones. Distinguish multimode and single-mode fibers and their wavelengths.

Explains common network connectors, including RJ-45 and RJ-11, wiring standards (TIA 568 A/B) and straight-through vs crossover cables, plus basic fiber optic connectors and fusion splicing.

Explore cable management by detailing patch panels, 110 blocks, and fiber patch panels, and learn terminating raw cable with punch down tools and color codes.

Review cables and connectors, Ethernet standards, fibre optic, twisted pair, twin ax, coaxial cable management, transceivers, and media converters. We will revisit these topics in greater detail in future sessions.

Explore ip packet types and interfaces, including unicast, multicast, and broadcast, plus IPv6 concepts like global unicast, link local, anycast, loopback, and subinterfaces for router on a stick.

Master the binary numbering system and its role in IPv4 addressing. Translate binary octets to decimal and decode subnet masks like 255.255.255.0 to identify networks.

Master IPv4 subnetting using the delta method: start with a /24, decide subnets, move the mask, and compute subnet IDs and host ranges with the delta, binary, and dotted-decimal masks.

Count in binary to verify subnet calculator; moving mask from /24 to /25, /26, and /27 yields 2, 4, and 8 subnets, with 32 hosts after subtracting network and broadcast.

Learn to find subnet IDs by moving the mask from /24 to /25, using a 128 delta to create subnets 192.168.1.0 and 192.168.1.128 and determine their hosts and broadcast addresses.

Practice subnetting the class C network 192.168.1.0/24 into two /25 subnets using Packet Tracer, configuring a two-interface router (fa0/0 and fa0/1) and hosts to verify via ping.

The delta guides subnetting in a network design, splitting 192.168.1.0/24 into /25 segments with router links, subnet IDs, first legitimate hosts, and broadcasts, plus scope guidance.

Learn to subnet by hosts, determining host bits and masks to deliver required addresses per location. Include subnet and broadcast, with examples using /28, /27, and /30.

Explore subnetting beyond the fourth octet, learning to move the mask across octets, calculate the delta, determine subnet IDs, and manage large subnet ranges with practical examples.

Learn supernetting to aggregate multiple networks by moving the mask left, creating larger subnets, fewer networks, and simplified router tables through route aggregation.

Master IPv6 addressing with 128-bit hexadecimal addresses, colon-separated groups, and slash-64 prefixes. Explore global, unique local, and link-local unicast, plus address assignment, subnetting, and neighbor discovery basics.

Explore common layer seven remote control protocols, including the Microsoft remote desktop protocol (RTP) for remote administration, noting Telnet (port 23) versus SSH/SCP/SFTP (port 22) and VNC (5900/5800).

Explore web protocols, focusing on http and https, the stateless http methods such as get and post, and how URLs, hostnames, ports, and paths enable web communication.

Learn how database protocols use SQL to interface with relational databases, configure remote connections over TCP ports, and how networks support SQL servers like SQL Server, Oracle, MySQL, and SQLite.

Centralize network monitoring using syslog, Windows event log subscriptions, and SNP to collect logs and metrics from diverse devices. Configure alerts, traps, and dashboards with a MIB and OID approach.

Explore layer seven protocols that enable remote control, file and print, web, email, database, voice, and security services, with a preview of deeper dives in the next module.

Configure a DHCP server in Packet Tracer, enable the DHCP service, and hand out addresses from a 192.168.1.100/24 pool to clients via a hub and sniffer.

Configure a dhcp relay agent on the router to forward dhcp requests across subnets, set up two dhcp scopes on the server, and verify client leases from both sides.

Explore how the domain name system maps names to addresses using a hierarchical namespace with root servers, top level domains, delegation, zone transfers, and authoritative and caching DNS servers.

Set up a DNS server in a DHCP network, create A records for two web servers, and verify name resolution with browser access across subnets.

Configure dns by creating A records and CNAME aliases to map multiple names to one server, and update IP with A records.

Explore cloud concepts, including public, private, hybrid, and community clouds, the SaaS, IaaS, and PaaS models, and connectivity and elasticity for scalable, pay-as-you-go services.

Explore essential network services and fundamental infrastructure components, including DHC, P and DNS, and network time. Preview data center architecture and cloud concepts as you move to the next module.

Explore the physical components that move data across a network, including NICs, MAC addresses, MTU limits, and how switches, routers, and VLANs shape collision and broadcast domains.

Explore repeaters and hubs as layer one devices that extend cable and Wi-Fi signals, amplifying and regenerating data, and explain collision and broadcast domains in half-duplex networks.

Bridge and switch operate as layer two devices using MAC addresses to forward frames between media. Explore forwarding decisions, unknown unicast flooding, micro segmentation, port density, and PoE options.

Connect devices with fixed and modular switches, using copper and fiber ports and uplinks, and count collision domains per port while maintaining one broadcast domain.

Explore how routers act as layer three devices, using route tables to forward IP packets, perform header rewrites, and serve as default gateways alongside layer three switches and VLANs.

Explore networking devices such as repeaters, hubs, bridges, switches, routers, multilayer switches, security devices, and modems as the module moves to the next topic.

Introduce the internet of things, where everyday devices connect via wireless networks and unique identifiers, highlighting security risks, weak passwords, and the need for regular updates.

Explore how industrial control systems use PLCs, sensors, and actuators to monitor and control processes, while SCADA provides centralized supervision, data historian, and remote field connectivity.

Explore new concepts around IP devices, the internet of things, and industrial control systems, and preview the next module as this unit wraps up.

Configure static routes across two routers and switches. Assign ip addressing and default gateways, verify with show ip route and traceroute, and save the router configuration.

Resolve the IP to MAC on the same network using DNS and ARP; the switch floods the ARP request until the MAC is learned.

Learn how a packet crosses a single router between networks using MAC addresses, ARP, and default gateway logic. IP addresses stay the same end-to-end while MAC addresses change per hop.

Apply static routes in a multi-router topology, configure masks and next hops, and verify connectivity with ping, traceroute, and show ip route, including default routes, for CompTIA Network+ N10-008 learners.

Explain how a router selects the best path using administrative distance and the metric, maintains the route table, and compare routing protocols like RIP, OSPF, ERP, and BGP.

OSPF operates as a layer 3, link-state interior gateway routing protocol, using multicast to propagate changes and organize routers into areas with a backbone area for fast convergence.

Explore bgp, the exterior gateway protocol that uses path vectors over tcp to route between autonomous systems, with manual peer configuration, network announcements, and considerations of convergence, security, and scalability.

Enable bandwidth management and QoS with traffic shaping and DSCP/diffserv to protect voice and video real-time applications, while reducing delay, jitter, and packet loss across devices.

Explore Ethernet basics and switching concepts, covering MAC addresses, Ethernet II framing, MTU and jumbo frames, VLAN tagging and trunking, VLAN routing, contention management, and switch port configuration.

Switches forward frames via a dynamic MAC address table, offer store-and-forward, fragment-free, or cut-through switching, and use spanning tree to prevent loops by root bridge election.

Learn how a switch dynamically learns mac addresses, builds its mac table, and verifies entries by connecting six pcs, pinging hosts, and mapping mac addresses to ip addresses in topology.

Explore why and how to route between VLANs using routers and multilayer switches, including router on a stick and VLAN interfaces as default gateways.

Configure inter-VLAN routing with a distribution switch and a layer-3 switch, set VLAN interfaces with /29 IP addresses, enable ip routing, and verify connectivity across VLANs via trunk links.

Explore contention management in Ethernet switching, including CSMA/CD and collisions, and how switches divide collision domains. Learn how VLANs and routers prevent broadcast propagation by segmenting broadcast domains.