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97. Guided course · Preview access

    Analyze and troubleshoot performance issues

    • CompTIA Linux+ · XK0-006 · V8
    • Objective 5.5 · Troubleshooting

    Concepts: Load average · I/O wait · Swap pressure · Thermal throttling

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98. Guided course · Preview access

    Follow a connection through the OSI layers

    • CompTIA Network+ · N10-009 · V9
    • Objective 1.1 · Networking Concepts

    Concepts: Physical layer · Data link layer · Network layer · Transport layer

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99. Guided course · Preview access

    Networking appliances, applications, and functions

    • CompTIA Network+ · N10-009 · V9
    • Objective 1.2 · Networking Concepts

    Concepts: Router · Ethernet switch · Firewall · Load balancer

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100. Guided course · Preview access

     Cloud concepts and connectivity options

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.3 · Networking Concepts

     Concepts: Virtual private cloud · Network function virtualization · Software as a service · Infrastructure as a service

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101. Guided course · Preview access

     Common networking protocols, ports, services, and traffic types

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.4 · Networking Concepts

     Concepts: SSH · DNS · DHCP · NTP

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102. Guided course · Preview access

     Transmission media and transceivers

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.5 · Networking Concepts

     Concepts: Single-mode fiber · Multimode fiber · Direct attach copper · Coaxial cable

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103. Guided course · Preview access

     Network topologies, architectures, and types

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.6 · Networking Concepts

     Concepts: Mesh topology · Star topology · Spine-and-leaf · Three-tier architecture

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104. Guided course · Preview access

     Use appropriate IPv4 network addressing

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.7 · Networking Concepts

     Concepts: APIPA · RFC 1918 addressing · IPv4 loopback · Variable-length subnet masking

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105. Guided course · Preview access

     Evolving use cases for modern networks

     • CompTIA Network+ · N10-009 · V9
     • Objective 1.8 · Networking Concepts

     Concepts: SD-WAN · VXLAN · Zero-trust architecture · Infrastructure as code

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106. Guided course · Preview access

     Characteristics of routing technologies

     • CompTIA Network+ · N10-009 · V9
     • Objective 2.1 · Network Implementation

     Concepts: Static route · OSPF · BGP · Port address translation

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107. Guided course · Preview access

     Configure switching technologies and features

     • CompTIA Network+ · N10-009 · V9
     • Objective 2.2 · Network Implementation

     Concepts: Access VLAN · VLAN trunk · Native VLAN · LACP

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108. Guided course · Preview access

     Select and configure wireless devices and technologies

     • CompTIA Network+ · N10-009 · V9
     • Objective 2.3 · Network Implementation

     Concepts: Nonoverlapping channel plan · Band steering · WPA3-Personal · Enterprise wireless authentication

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Topics and concept names from the seven current certification courses. IT basics and resource-only routes are available separately.