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| Open System Interconnection |
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| Which OSI Layer deals with the parts of the network you can touch such as cabling? |
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Definition
| Physical Layer/OSI Layer 1 |
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| What OSI Layer deals with MAC Addresses and Switches? |
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| Data Link Layer/ OSI Layer 2 |
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| What OSI Layer deals with routing and the IP Protocol? |
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| Network Layer/OSI Layer 3 |
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| What OSI Layer deals with TCP and UDP, and is known as the post office layer? |
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| Transport Layer/OSI Layer 4 |
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| What OSI Layer deals with communication management between devices, including half-duplex and full-duplex? |
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| Session Layer/OSI Layer 5 |
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| What OSI Layer links the Presentation Layer and Transport Layer? |
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| Session Layer/OSI Layer 5 |
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| What OSI Layer is responsible for character encoding and application encryption? |
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Definition
| Presentation Layer/OSI Layer 6 |
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| What OSI Layer is associated with HTTP(S), FTP, DNS, and POP3? |
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| Application Layer/OSI Layer 7 |
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| Which OSI Layer is the layer the user interacts with? |
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Definition
| Application Layer/OSI Layer 7 |
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| Which type of documentation details the wiring path between devices? |
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| What type of documentation follows the physical wiring and devices on a network? |
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| Physical Network Diagrams |
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| What type of documentation gives you a high level views of network infrastructure? |
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| What type of documentation provides a point of reference in time? |
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| Which type of documentation deals with infrastructure, security, network, etc. and is often created/approved by committee? |
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| Policies, Procedures, and Configuration |
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| What type of documentation is posted in a common area, and are sometimes regularly audited, depending on the industry? |
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| What protocol does ping use? |
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| What does ICMP stand for? |
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| Internet Control Message Protocol |
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| What do we use to trace the route of packets through the network? |
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| What do we do to test how well network components handle loads over time? |
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| What is a standard format for sharing log info? |
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| A standard protocol for forwarding log messages |
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| What is often the number one priority for network infrastructure? |
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| What does a slow network do to applications? |
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| What are major concerns for video applications? |
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| What is the gold standard for High Availability Uptime? |
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| What is designed to maintain uptime in the case of a failure? |
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| What allows you to prioritize traffic by application type? |
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| What can you use to avoid redundant network traffic? |
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| What type of web pages are never cached? |
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| What is the critical first step of network troubleshooting? |
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| What is a very important piece of information that should be gathered when asking questions to troubleshoot a network? |
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Definition
| Determining the last major change |
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| After gathering information, what should you do next? |
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Definition
| Identify Affected Areas of the Network |
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| What are some uptime tests? |
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| What is a common way to identify changes made to a network, especially during non business hours? |
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| Automated monitoring tools |
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| After Identifying the affected areas of the network, what should be done next when troubleshooting a network? |
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| Determine if anything has changed |
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| After determining if anything has changed, what is the next logical step in troubleshooting a network? |
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| Establish most probable cause |
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| Which step of the networking troubleshooting methodologies would involve brainstorming sessions and lists? |
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| Establishing most probable cause |
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| After establishing most probable cause, what is the next logical step in troubleshooting a network? |
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| Determine if escalation is necessary |
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| After determining if escalation is necessary and possibly escalating the problem, what is the next logical step in troubleshooting a network? |
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Definition
| Create an action plan and solution |
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| What should always be included in your plan when troubleshooting a network? |
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Definition
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| After creating a plan of action, what is the next logical step in troubleshooting the network? |
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Definition
| Implement and test the solution |
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| When implementing a solution, what is the most important thing you should do? |
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Definition
| Only change one thing at a time |
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| After Implementing and testing your solution, what is the next logical step in troubleshooting a network? |
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Definition
| Identify the results and effects |
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| What is the last step in troubleshooting a network? |
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Definition
| Documenting the solution and process |
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| What is the most important thing to document after solving a network problem? |
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| The root cause of the problem |
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| What do we call it when energy from a signal crosses from one pair to another? |
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| How is crosstalk measured? |
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| In terms of crosstalk what do higher dB readings mean? |
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| If you have a collision what type of ethernet communication are you using? |
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| What do we call it when two wires are crossed or pinched together? |
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| What do we call a physical break in a wire? |
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| What type of physical connectivity issue manifests itself as echo? |
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| What do we call external influences on a signal? |
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| How do we ensure all port speeds match on our network when the auto negotiating capability is not functioning properly? |
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| What happens in the case of a port duplex mismatch? |
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| What happens in the case of an Incorrect VLAN? |
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| How can you ensure that your IP address and subnet mask are configured correctly? |
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Definition
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| How do you troubleshoot your default gateway? |
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Definition
| Ping both inside and outside your subnet |
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| How do you confirm functionality of your DNS server? |
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Definition
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| How do you confirm a routing loop? |
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Definition
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| Why are switching loops worse than routing loops? |
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Definition
| Routing loops have TTL, so the loop will not go on forever, a switching loop will |
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Term
| What happens in the case of route problems? |
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Definition
| Lack of connectivity and dropped packets |
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Term
| What does the WPA protocol use? |
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Term
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| Advanced Encryption Standard |
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| What does WPA2 Personal mode use for authentication? |
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Definition
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| What kind of authentication does WPA2 enterprise mode use? |
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Definition
| 802.1x (External Authentication) |
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