WGU Students have material included from Certmaster and its labs.

At the beginning of each section and subsection includes questions to think about and what objectives they cover.

Unlike Certmaster objectives, there are 14 sections and many subsections. Colors are changed as a section changes and the official objectives covered are under the heading as a way to organize them.

The point of this section is to give an overview of those questions and answers as it may help to understand Comptia Objectives.

Additionally, this may be able to generate questions while you are studying to make sure that you are going in the right direction.

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Network Concepts

1.2 Compare and contrast networking appliances, applications, and functions.

1.6 Compare and contrast network topologies, architectures, and types.

• Why is it useful to categorize network types, appliances, applications, functions, and topologies?
• What are the advantages of a client-server network compared to a peer-to-peer network?
• How does a logical topology differ from a physical topology?
• What do diagrams of point-to-point, star, and mesh topologies look like? </aside>

(The gifs I found doing a google search, but I do not condone using that site for anything)

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> OSI Model

*1.1 Explain concepts related to the Open Systems Interconnection (OSI) reference model*   

• Why are protocols important for networking?
• What is the OSI model? Why is it important for understanding networking?
• At which OSI model layer do common network appliances, applications, and functions work?
• How does data encapsulation facilitate data transmission? How does encapsulation relate to frames, datagrams, segments, and ports? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> SOHO and Addressing

1.1 Explain concepts related to the Open Systems Interconnection (OSI) reference model.

• What separate functions are packed into a typical SOHO router appliance?
• How are Internet services provisioned and managed?
• What types of numbering schemes are used to represent network addresses? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Troubleshooting Methodology

5.1 Explain the troubleshooting methodology.

• What are the advantages of applying a structured methodology to troubleshooting?
• What is the sequence of steps in CompTIA's troubleshooting methodology?
• What activities are performed at each step? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Ethernet Networks

1.5 Compare and contrast transmission media and transceivers.

• What cable topologies and appliances support the creation of an Ethernet network?
• How do multiple hosts share access to the same media?
• How can I identify what cable speed is specified by a given Ethernet standard? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Twisted Pair Cabling

1.5 Compare and contrast transmission media and transceivers.

• Why are wires twisted together in twisted pair cables?
• What is the difference between STP cabling and UTP cabling? STP (Shielded Twisted Pair)
• What speeds and distances are supported by different cable categories?
• How can you tell the difference between RJ11 and RJ45 connectors?
• What are the uses of coax and Twinax copper cabling? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Physical Installations

2.4 Explain important factors of physical installations.

• What is the difference between the MDF and an IDF, and how do they relate to patch panels?
• When should you use stranded core twisted pair cable instead of solid core twisted pair?
• What is the difference between the T568A and T568B standards?
• When you use a punch down tool, which way should the blade be facing? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Fiber Optic Media

1.5 Compare and contrast transmission media and transceivers.

2.4 Explain important factors of physical installations.

• What advantages do fiber optic cables offer over copper cables?
• What is the difference between single mode and multimode cables?
• What are the different fiber connector types, and what are their typical uses?
• What are duplex, parallel, and multiplexed transmission types? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Site Environmental and Physical Factors

2.4 Explain important factors of physical installations.

• How do rack systems ensure density and security?
• What considerations must be made for supplying power to run networking equipment?
• What are the risks from environmental factors, and how can they be controlled? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Physical Layer Troubleshooting

5.2 Given a scenario, troubleshoot common cabling and physical interface issues.

5.5 Given a scenario, use the appropriate tool or protocol to solve networking issues.

• How can you distinguish an issue caused by improper cable choice or termination from one caused by environmental factors?
• Which tools can you use to diagnose issues with copper and fiber optic cable and connectors?
• What is the difference between a regular cable tester and a cable certifier?
• Which tool would you use to find the end of a specific cable within a wiring closet? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Transceivers and Network Interfaces

1.5 Compare and contrast transmission media and transceivers.

5.2 Given a scenario, troubleshoot common cabling and physical interface issues.

• What is the function of a transceiver ?
• At which OSI layers do transceivers and network interfaces operate?
• What is Ethernet framing, and how are network interfaces uniquely addressed?
• What is the purpose of the cyclic redundancy check (CRC)?
• What does the MAC address ff:ff:ff:ff:ff:ff indicate?
• What are the symptoms of transceiver issues? </aside>

<aside> <img src="/icons/checkmark_blue.svg" alt="/icons/checkmark_blue.svg" width="40px" /> Hubs, Bridges, and Switches

1.2 Compare and contrast networking appliances, applications, and functions.

2.2 Given a scenario, configure switching technologies and features.

• A host on a network sends a frame to the hub. Which other devices on the network will see this frame?
• A host on a network sends a frame to a switch. Which other devices on the network will see this frame?
• What are the similarities and differences between a bridge and a switch?
• What are the advantages of using switches instead of hubs?
• What is the difference between a managed and an unmanaged switch? </aside>