CompTIA® Network+ (N10-008)

Overview

The CompTIA® Network+ course builds on your existing user-level knowledge and experience with personal computer operating systems and networks by presenting the fundamental skills and concepts you will use on the job in any type of networking career.

If your job duties include network troubleshooting, operation or maintenance, or if you are preparing for any type of network-related career, this course will provides the background knowledge and skills you will need to be successful. The course will also assist you if you are preparing for the 2021 update to the CompTIA Network+ certification. This new version is inclusive of emerging technologies and includes new content in 5G, IoT and cloud computing.

Exam: N10-008

COURSE INSTRUCTOR

Dan Young, AI and ChatGPT, CompTIA, Cisco

COURSE DIFFICULTY

Beginner

COURSE DURATION

24h

Skills Learned

After completing this online training course, students will be able to:

Design and implement functional networks
Describe IoT systems
Configure, manage, and maintain essential network devices
Describe the 5G cellular technology
Understand when to use cloud technologies to solve IT challenges
Use devices such as switches and routers to segment network traffic and create resilient networks
Identify benefits and drawbacks of existing network configurations
Implement network security, standards, and protocols
Troubleshoot network problems
Support the creation of virtualized networks

This course is intended for entry-level computer support professionals with a basic knowledge of computer hardware, software, and operating systems who wish to increase their knowledge and understanding of networking concepts and acquire the required skills to prepare for a career in network support or administration, or who wish to prepare for the CompTIA Network+ certification (Exam N10-008).

Networking experience is helpful but not mandatory; A+ certification or equivalent skills and knowledge is helpful but not mandatory.

01. Fundamentals of Network Communication

Introduction to Networks
- Definition of a Networks:
  - The Internet
  - Network
  - Subnet
  - LAN
  - WLANs
- Endpoints in a Network
  - Hosts:
    - Clients
    - Servers
    - Peers
  - Introduction to Devices in a Network
    - Switches
      - MAC Address Tables
    - Routers
      - Routing Tables
    - Multilayer Switches
      - VLANs
    - Access Points
    - WLAN Controllers
    - Firewalls
      - NGFWs
    - Proxy Servers
    - Bridges
    - Repeaters
  - Introduction to Interconnections in a Network
    - Cabled
      - Fiber Optic
      - UTP
    - Wireless
      - WiFi
    - Moving Packets through a network

02. Networking Concepts

Introduction to the OSI Model
- Bacon Frying Produces Salivation
Introduction to Network Addressing
- MAC addressing
- IPv4 addressing
- IPv6 addressing
Communicating at Layer 2 of the OSI Model
- Frames
- Switches
Communicating at Layer 3 of the OSI model
- Packets
- Routing
Client Communication
- Sending to the Default Gateway
Network Topologies
- Hub-and-spoke/Star
  - N-1 connections
- Bus
- Ring
- Mesh (N*N-1/2 connections)
- Spine-Leaf

03. Internet, Transport and Application Layer Protocols

Internet Layer Protocols
Transport Layer Protocols
- TCP
- UDP
Application Layer protocols
- IMAP
- SIP
- RTMP
- FTP
- RDP
- SMB
- SSH
- Telnet
- NTP
- TFTP
- DNS
- HTTP
- HTTPS
  - SSL
- Port 25
- Port 110
- Port 143
- Port 389
- Port 445
- Port 587
- Port 993
- Port 995
- Port 1433
- Port 3389
- Port 8080

04. Ethernet Technologies

Ethernet Standards
- 10GBaseT
- 1000BaseT
- 1000BaseSX
- 1000BaseLX
Introduction to Twisted Pair Ethernet Cabling
- UTP
- STP
- RJ-45
  - RJ11 vs RJ45
- MDIX
- Crossover Cables
Duplex
- Half Duplex – CSMA/CD
- Collisions
- Full Duplex
- Duplex Mismatches – Late Collisions
Fiber Optic Ethernet Cabling
- LC
- ST
- Fiber Optic Transceivers
  - SFP+
  - QSFP+
  - QSFP
  - SFP
- CRCs
- Media Converters
- Fiberoptic Transceivers
- TX/RX polarity
Ethernet MTU
- Jumbo Frames
- Runts
- Giants
Switching Operation
- Forward/Filter Decision
- MAC Address Table Operation
- Frame Flooding
- Broadcast Storms
- Spanning-tree Protocol
- Rapid Spanning-tree Protocol
- VLANs
- 1q
PoE
Cabling Tools
- OTDR
- Tone generator
- Cable tester
- Multimeter
- Spectrum Analyzer

05. WiFi Technologies

Wireless Access Methods
- CDMA
- CSMA/CA
- GSM
- CSMA/CD
Wifi Standards
- 11 standards (all)
- WiFi 4
- WiFi 5
International Regulation of Frequencies
Channel Deployment
Deploying WLANs
- SSID
- IBSS
- BSS
- ESA
- Roaming
WiFi Signaling
- EiRP/RSSI
- Signal Attenuation vs Frequency
- Refraction
- Antennas
  - Omnidirectional
  - Directional
  - Yagi
  - Parabolic
  - Antenna Power
- Site Surveys
  - Heat Maps
- WiFi Technologies
  - MIMO
  - Channel Bonding
- WiFi Security
  - MAC Filtering
  - TKIP
  - WPA
  - WPA2
  - WPA3
  - CCMP-AES
  - EAP-TLS
- Guest Networks
  - Wireless Client Isolation
  - Captive Portals
  - Timeouts for Clients on the Guest Network
- WLAN Controllers/Lightweight Access Points
- Lab Example based on Dumps AP Config (Q39)

06. Remote Office

Broadband Technologies
- DSL
- Cable
  - RG-6
  - DOCSIS
- Broadband Satellite
- Demarcation Point
SoHo Routers – LEDs
- Troubleshooting connectivity
- Default Credentials
- Updating Firmware and Software (for security)
- Verifying MD5 Hashes for Software upgrades
Logging and Management Protocols
- SYSLOG Messages
  - Logging Level
- NTP
- NetFlow
- SNMP
  - MIB
  - Traps
- SIEM

07. IPv4 Fundamentals

IPv4 Address Length
Class A,B,C addresses
RFC1918 Addresses
Subnet Masks
Assigning Addresses
- Static Assignment
- DHCP
ARP
Default Gateways
ipconfig
DHCP Configuration
- Scope Options
- Lease Duration
- Reservations
- Exclusions
- Disabling DHCP/Static Assignment
- DHCP Relay
- APIPA
DNS
- A records
- MX records
- CNAME Records
- TXT Records
- NS Records
- SOA
- Authoritative Name Servers
- TTL
- DNS Caching
IP Subnetting
- Purpose of the Subnet Mask
- Subnet Mask Reading
  - CIDR/Prefix Notation
- Same Subnet Validation
- Calculating the Block Size
- Calculating Hosts Per Subnet
- Calculating Subnets Created

08. Routing

Routing Tables
Packet Delivery
Static Routing
Default Routes
Dynamic Routing Protocols
- RIP
- EIGRP
- OSPF
- BGP
Administrative Distance
Routing Loops
- TTL
Asymmetric Routing

09. IPv6

AAAA
SLAAC

10. Advanced Network Services

Port Aggregation
- LACP
- NIC Teaming
First Hop Redundancy Protocols
- HSRP (misconfiguration)
- VRRP
- Virtual IPs
Neighbor Discovery Protocols
- CDP
- LLDP
Remote Access
- RDP
- Remote Desktop Gateways
NAT
- NAT
- Static NAT (SNAT)
- PAT
Load Balancers
Remote Desktop Gateways
Firewalls
- Screened Subnets
QoS
- Latency
- Jitter
- DSCP
- 1q
- Packet Shaping
- Flow Control
- Bandwidth Management
VoIP and Video Conferencing
- Jitter
IP Phones
Voice VLANs
SIP and RTP

11. Troubleshooting Communication

Dependencies of Network Communication
- Layer 1
  - Physical Connectivity
- Layer 2
  - LAN/VLAN Connectivity
- Layer 3
  - IP Addressing
  - Routing
- Translations (NAT/PAT)
- Name Resolution
- Allowed Via Firewalls
- Troubleshooting Methodology (Copied from Josh’s)
  - Identify the Problem
  - Gather information
  - Question users
  - Identify Symptoms
  - Determine if anything has changed
  - Duplicate the problem, if possible
  - Approach multiple problems individually
- Establish a theory of Probable cause
  - Question the obvious
  - Consider multiple approaches
    - Top-to-bottom/ bottom-to-top OSI model
    - Divide and conquer
  - Test the theory to determine the cause
    - If the theory is confirmed, determine the next steps to resolve the problem
    - If the theory is not confirmed, reestablish a new theory or escalate
  - Establish a plan of action to resolve the problem and identify potential effects
  - Implement the solution or escalate as necessary
  - Verify full system functionality and, if applicable, implement preventative measures
  - Document findings, actions, outcomes, and lessons learned
How NOT to Troubleshoot
- Shoot from the Hip
- Test in Production
Troubleshooting Strategies
- Divide and Conquer
- Top to Bottom
- Bottom to Top
Troubleshooting Tools
- NetFlow
- Host Commands:
  - Nmap
    - IP Scanning
    - Port Scanning
  - tcpdump
  - arp
  - route
  - nslookup
  - netstat
  - ipconfig
  - ifconfig
  - arp
  - dig
  - ping
  - hostname
  - tracert
  - iPerf
- Switch Commands:
  - show interface
  - show running-config
  - show counters

12. Security Theory and IT Policies

Security Threats
- MAC Spoofing
  - RARP
- Rogue DHCP Servers
- ARP Poisoning
- VLAN Hopping
- Rogue Access Points
- DoS
- DDoS
- Botnets
- DNS Poisoning
- Pass-the-hash attack
- Rainbow table attack
- Brute-force attack
- Dictionary attack
- Phishing
- Ransomware
Security Features
- Switch Security Features
  - DHCP Snooping
  - Dynamic ARP Inspection
  - MAC Filtering
  - Port Security
- ACLs
- Management ACLs
- Control Plane Policing
Security Policy
- AUP
  - Captive Portals
  - DLP
  - BYOD
  - Change Management
  - Incident Response Plan
- Disaster Preparedness
  - Business Continuity Planning
  - RTO
  - SLA
  - MOU
  - MTBF
  - MTTR
  - Hot/Warm/Cold/Cloud Sites
    - Replication
    - Hybrid Sites
  - Full Backup
  - Differential Backups
- Security Concepts
  - Vulnerability Assessments
  - CVEs
  - DLP
    - Lost Phone
  - SSO
  - MFA
  - Zero Trust
  - RBAC
  - Principal of Least Privilege
  - Separation of Duties
- Physical Security
  - MDF/IDF
  - Key Fobs
  - Smart Cards
  - Door Locks
  - Tailgating
  - Shoulder Surfing
  - Access Control Vestibules
  - Access Card Readers
  - Biometric Security Hardware
  - Motion Detectors
  - Smart Lockers
  - Security Cameras
  - False Cameras
- VPNs
  - Client-to-Site VPNs (i.e. Remote Access VPNs)
  - Split Tunneling
  - Clientless VPNs
  - Site-to-Site VPNs
  - mGRE
  - VPN Concentrators
- Authentication Protocols
  - MS-CHAP
  - RADIUS
  - TACACS+
  - LDAPS
- Security Devices
  - NGFW
    - Load Balancing/Clustering
  - Jump Box
  - Proxy Server
  - Network Tap
  - Port Mirroring/SPAN
  - IDS
  - IPS
  - Honeypots
- IT Management
  - Asset Tracking
  - Network Baselines
  - Standard Operating Procedures
  - Cable Labeling
    - Consistency
  - Environmental Sensors

13. Advanced Technologies

Virtualization
- Hypervisors
- VMs
- Guest OS
- vSwitch
Internet Connectivity
- Load Balancing
Three-Tiered Model
- Access
- Distribution
- Core
Datacenter Networking
- Top of Rack
- North-South
- East-West Communication
Storage Area Networking
- RAID
- SANs
- iSCSI
- FC
- FCoE
Software Defined Networking
- Spine and Leaf
IoT
Clouds
- IaaS
- SaaS
- PaaS
- Elastic Computing
- Hybrid Deployment
MPLS
CDNs

Monday, July 17

12:00pm - 03:00pm EDT

CompTIA® Network+ (N10-008)

Overview

Skills Learned

Design and implement functional networks

Describe IoT systems

Configure, manage, and maintain essential network devices

Describe the 5G cellular technology

Understand when to use cloud technologies to solve IT challenges

Use devices such as switches and routers to segment network traffic and create resilient networks

Identify benefits and drawbacks of existing network configurations

Implement network security, standards, and protocols

Troubleshoot network problems

Support the creation of virtualized networks

Monday, July 17

Tuesday, July 18

Wednesday, July 19

Thursday, July 20

Monday, July 24

Tuesday, July 25

Wednesday, July 26

Thursday, July 27

Skills Learned

Design and implement functional networks

Describe IoT systems

Configure, manage, and maintain essential network devices

Describe the 5G cellular technology

Understand when to use cloud technologies to solve IT challenges

Use devices such as switches and routers to segment network traffic and create resilient networks

Identify benefits and drawbacks of existing network configurations

Implement network security, standards, and protocols

Troubleshoot network problems

Support the creation of virtualized networks

Monday, July 17

Tuesday, July 18

Wednesday, July 19

Thursday, July 20

Monday, July 24

Tuesday, July 25

Wednesday, July 26

Thursday, July 27

Say Hi to Mike!