This lecture covers the following CompTIA Network+ Exam Objectives:

1.1 Explain the purposes and uses of ports and protocols

1.2 Explain devices, applications, protocols, and services at their appropriate OSI layers

1.3 Explain the concepts and characteristics of routing and switching.

1.8 Explain the functions of network services.

3.4 Given a scenario, use remote access methods.

4.5 Given a scenario, implement network device hardening.

After completing this lecture, students will able able to:

• Describe TCP/IP Protocol Suite in the DoD model

• Describe the major ports and protocols

• Describe the DHCP process

• Describe the DoD model

• Describe the IPv4 header

• Explain the difference between connection-oriented and connectionless

• Describe the IP protocols such as ARP, RARP, and ICMP

After completing this lecture, students will be able to:

• Explain how data encapsulation works

This lecture covers the following two CompTIA Network+ Exam Objectives:

• 1.3 Explain the concepts and characteristics of routing and switching

• 1.4 Given a scenario, configure the appropriate IP addressing components

After completing this lecture, students will be able to:

• Describe what a nibble, bit, byte, octet, IP address, network address, and broadcast address are

After completing this lecture, students will be able to:

• List Class A, B, C, and private IP ranges

After completing this lecture, students will be able to:

• Recall how APIPA is applied

• Demonstrate how link-local is assigned

After completing this lecture, students will be able to:

• Illustrate how IPv6 came about and its purpose

• Describe IPv6 addressing and expressions

• Describe IPv6 address types

• Name IPv6 special addresses

• Describe stateless autoconfiguration

• Describe 6to4 tunneling

This lecture covers the following CompTIA Network+ Exam Objectives:

• 1.3 Explain the concepts and characteristics of routing and switching

After completing this lecture, students will be able to:

• Describe what information a router must know in order to route packets

• Describe how to display networks with their associated network interfaces

After completing this lecture, students will be able to:

• Apply how a packet is created on a host

• Apply how a packet is forwarded

• Apply how a router processes a received packet

• Apply how a router routes the packet

• Apply how the host receives the packet

After completing this lecture, students will be able to:

• Demonstrate how packets are routed and what interfaces are used with a given scenario

After completing this lecture, students will be able to:

• Name the difference between dynamic and static routing

• List the differences between IGP and EGP

• Memorize which protocols in IGP are distant vectors and link state protocols

• Name what hybrid routing protocols are

This lecture covers the following CompTIA Network+ Exam Objectives:

• 1.3 Explain the concepts and characteristics of routing and switching

• 2.2 Given a scenario, determine the appropriate placement of networking devices on a network and install/configure them

After completing this lecture, students will be able to:

• Define the significance between administrative distances and how they impact performance

• Illustrate what autonomous systems are and how they impact managing networks

• Recall the default administrative distances for routing sources

• Recall the three classes of routing protocols

After completing this lecture, students will be able to:

• Know why distance vectoring is considered routed by rumor

• Identify the three important things on how a router builds its routing table

• Name the different vector routing protocols and how they are different from one another

• Describe what VLSM and discontiguous networks are and how they benefit network and routing performance

After completing this lecture, students will be able to:

• Illustrate why link state routing protocols use VLSM

• State why link state uses hello packets to establish neighbor tables

• Know that link state advertisement helps establish the entire internetwork

• Know OPSF and the algorithm it uses

• Describe the difference between RIPv1 and OSPF

• List the differences between RIPv1 and RIPv2

After completing this lecture, students will be able to:

• Describe what FHRP is and how it is employed

• Describe why HSRP is favored by Cisco and how it provides redundant routing capability

• Explain the difference between VRRP and HSRP

After completing this lecture, students will be able to:

• Recall how routes are advertised with IPv6

• Describe how IPv6 conducts neighbor discovery

• List the variant tunnel techniques used by IPv6 such as GRE, 6to4, and ISATAP

• Describe what dual stack is when employed by IPv4 and IPv6

After completing this lecture, students will be able to:

• Recall the difference between RIPng, EIGRPv6, and OSPFv3

This lecture covers the following CompTIA Network+ Exam objectives:

• 1.3 Explain the concepts and characteristics of routing and switching

• 2.2 Given a scenario, determine the appropriate placement of networking devices on a network and install/configure them

• 3.2 Compare and contrast business continuity and disaster recovery concepts.

• 4.2 Explain authentication and access controls

• 4.6 Explain common mitigation techniques and their purposes

• 5.3 Given a scenario, troubleshoot common wired connectivity and performance issues

After completing this lecture, students will be able to:

• Recall how hubs and bridges were used prior to Layer 2 switches being available

After completing this lecture, students will be able to:

• Describe the primary purpose of what a switch does

• List the benefits of using Layer 2 switches and why they are faster than routers

• Examine the limitations of switches

• Distinguish the three different basic switch functions

• Recall what distributing switching is and how to employ it

After completing this lecture, students will be able to:

• Describe what standard STP is and what its purpose is when enabled

• Demonstrate how STP achieves its purpose to prevent switching loops

• Illustrate what the STA is and what it creates

• List the five different Spanning Port Tree states

• Describe STP Convergence

• Analyze what RSTP is and how it is different from STP

After completing this lecture, students will be able to:

• Recall the basic concept of a VLAN

• Explain how VLANs break up broadcast domains

• Illustrate how VLANs support quality of service (QoS)

• Classify the five problems that can affect data and how QoS can help

• Apply the difference between access, voice, and trunk ports

• Describe the difference between static and dynamic VLANs

• Demonstrate how trunks are employed

After completing this lecture, students will be able to:

• Describe what VTP is and how it manages the Layer 2 network

After completing this lecture, students will be able to:

• Define switch port security and the methods used for it

• Describe what ARP inspection is and what Flood Guard does

• Indicate what the difference between BPDU and Root Guard is

• Illustrate what port bonding is and how it improves performance

After completing this lecture, students will be able to:

• Describe the convenience of PoE

• Define port mirroring and port spanning and what network appliances can use them